3. A person is selected at random from the population of Verizon wir.pdf
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3. A person is selected at random from the population of Verizon wireless subscribers. Let A be the event that the chosen subscriber has friends or family added to his/her plan, and B denote the event that the subscriber has unlimited text messaging. Extensive records show that: P(A)=0.37, P(B)=0.23 and P(A U B)=0.47 Find P(A B). Solution NOte that P(A n B) = P(A) + P(B) - P(A U B) = 0.37 + 0.23 - 0.47 = 0.13 [ANSWER].
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![3. A person is selected at random from the population of Verizon wireless subscribers. Let A be
the event that the chosen subscriber has friends or family added to his/her plan, and B denote the
event that the subscriber has unlimited text messaging. Extensive records show that: P(A)=0.37,
P(B)=0.23 and P(A U B)=0.47 Find P(A B).
Solution
NOte that
P(A n B) = P(A) + P(B) - P(A U B)
= 0.37 + 0.23 - 0.47
= 0.13 [ANSWER]](https://image.slidesharecdn.com/3-230703110139-be45c118/85/3-A-person-is-selected-at-random-from-the-population-of-Verizon-wir-pdf-1-320.jpg)
Recommended
Describe how a selectively permeable membrane is involved in osmosis.pdf
Describe how a selectively permeable membrane is involved in osmosis. Include the role that the
solute concentration plays in the direction of water movement. Now think about how this process
may differ between plant and animal cells. For instance, how might cell walls disrupt the role of
solute concentration and cause one to refute a hypothesis for the direction of water movement
based on water concentration alone?
Solution
Let me first briefly descibe you how does osmosis happen. Consider there are two compartments
contaning a particular solute in a solvent seperated by a semi permeable membrane. If there
exists a solute difference between the two compartments, then solvent moves from the region of
lower conceration (with respect to solute) to higher concentration (with respect to solute) until it
reaches equilibrium. That means semi permeable membrane is permeable to solvent. Now comes
the situation of in vivo (i.e., within the body). The cells, whether from animals or plants are
usually hypertonic in nature that means cells have higher ionic concentration compared to its
external environment (water is the solvent). Then how do these cells maintain such a higher ionic
concentration by refuting the process of osmosis/diffusion. First let us consider the plant cell.
Plant cell has two coverages, namely plasma membrane and cell wall. Cell wall in plant cell is
made up of cellulose and cellulose is a polysacharide provides the rigidity to the cells. Actually,
it is the plasma membrane which does not allow the movement of water molecules to cross based
on gradient of solutes. Let me talk about the cell wall at the end of this answer. What makes that
plasma membrane to refute the law of osmosis ? It is its structural organization. Plasma
membrane is made up of phospholipids, cholesterol and proteins mainly. Phospholipids are
oriented in bilayer form facing its hydrophilic (water loving) head at both the ends interacing
with cytoplasma and extracellular environment and its hydrophobic (water hating) tails are
oriented deep within the membrane interacing each other. Plasma membrane of either plant or
animal are highly impermeable to the solutes and water. Permeability of plasma membrane
highly depends on the nature of solutes. If solute is smaller in size and hydrophobic in nature it
diffuses through the membrane quiet easily but it is difficult for the hydrophilic and largge size
solutes. Charge of the solutes also plays the major role. It is not only based on the concentration
gradient but also based on charge gradient. Hence it is known as electrochemical gradient. It is
actually a beautiful mechanism of cells to produce energy required for the cell based on
electrochemical gradient (within mitochondria) And for water, it is difficult to pass through.
There is a term called \"Activation energy\". Energy need to be supplied in order to facilitate the
movement of solutes.Lower the activation energy, lesser the energy required and vica versa.
Comi.
Compare and contrast Eriksons fifth stage of personality developme.pdf
Compare and contrast Erikson\'s fifth stage of personality development and Marcia\'s theory on
identity statuses. Which do you agree with and why?
Solution
Yes , i agree , as the Marcia\'s theory on identity statuses are developed based on Erikson\'s fifth
stage of personality development.
The fifth phase of Erikson\'s life stage hypothesis is identity and role confusion.. Strains for a
juvenile can know him/herself, what s/he will do with his/her life, fitting in gathering sand
encountering things. Knowing him/herself is imperative to a pre-adult in light of the fact that on
the off chance that he or she knows him/herself, his/her capacities, he or she can shape his/her
life as indicated by the properties and capacities that s/he has. Young people take a stab at
encountering things, for example, fitting into social gatherings, encountering things to think
about themselves and capability of their identity regardless of the possibility that they need to go
out on a limb. Accordingly to these strains, these encounters may bring about change in conduct,
identity and look of a youthful. What\'s more, these encounters keep on happening until the pre-
adult get over this identity and role confusion.
In light of Erik Erikson\'s noteworthy work on character and psychosocial improvement in the
1960s, Canadian formative clinician James Marcia refined and amplified Erikson\'s model,
principally concentrating on youthful development. Tending to Erikson\'s thought of character
emergency, Marcia set that the immature stage comprises neither of personality determination
nor personality disarray, but instead how much one has investigated and focused on a personality
in an assortment of life areas from employment, religion, social decisions, sex parts, et cetera.
Marcia\'s hypothesis of character accomplishment contends that two unmistakable parts frame a
juvenile\'s personality: emergency (i. e. a period when one\'s qualities and decisions are being
reexamined) and duty. He characterized a crisis as a period of change where old qualities or
decisions are being reevaluated. The end result of an crisis prompts to a guarantee made to a
specific part or esteem..
Upon developing a semi-structured interview for identity research, Marcia proposed Identity
Statuses of psychological identity development:
· Identity Diffusion –: the status in which the adolescent does no have a feeling of having
options; he or she has not yet made (nor is endeavoring/willing to make) a promise
Identity Foreclosure : the status in which the immature appears to focus on some significant
parts, qualities, or objectives for what\'s to come. Teenagers in this stage have not encountered a
personality emergency. They have a tendency to fit in with the desires of others in regards to
their future (e. g. permitting a parent to decide a profession course) As such, these people have
not investigated a scope of alternatives.
Identity Moratorium – the status in which the juvenile is as of now in a.
Briefly describe the phenomenon of exon shuffling and provide an exa.pdf
Briefly describe the phenomenon of exon shuffling and provide an example of this in living
systems
Solution
exon shuffling is a molecular mechanism for the formation of new genes. in this process 2 or
more exons are from different genes are brought together at a non-homologous site or there is a
duplication in the exons forming new intron-exon structures. exon shuffling takes place by
various processes such as transposon-mediated, cross over between gametes during sexual
recombination or any inappropriate recombinations.
living examples for exon shuffling are metazoans such as Homo sapiens have post-
transcriptional exon shuffling, Drosophila with 39% of gene rearrangements.
during evolution, 1-1 shuffling units were found in Trichoplax adhaerans and Nematostella
vectensis..
Biological Science in the Newsdentify source (internet link) and d.pdf
Biological Science in the News
dentify source (internet link) and date of news.
Write the title of the news article.
Use the D.A.R.E. critical thinking components to discuss article: Define, Analyze, Resolve, and
Evaluate.
Define: What is article about? (do not discuss the important points here)
Analyze: a. Discuss salient/important ideas or points. b. What impact do you think this news has
or will have on you or the world we live in?
Resolve: Generate a few questions that you have about the information.
Evaluate: Is it a controversial or a critical issue that needs more research? Is it information you
think should be more widely publicized? Should any action be taken? by whom? Explain your
thoughts.
Solution
Biological Science in the News
News presents in form of sound, picture, text individually or in combinations. Various studies
reveal that sound, picture or text has significant effects on human’s body and behavior. On the
basis of that, the article has greater potential to discuss the effects of news through biological
aspects. The representation and information of news makes human feel better or worse
accordingly. That feelings and impressions effect the brain of human body significantly which
can measure by the level of hormones like dopamine, serotonine, noradrenaline and others.
These impacts may bring society to feel accountable or no accountable to the particular effects of
news. People live in society and news comes from their interactions. Therefore, it would have
greater impacts to the physiological and behavioral factors of human. Now, scientist, activists,
and researchers are pointing out the possible harmful effects of news. Many news channels are
serving news on dinning plates. They are making the news exclusive and hot. Therefore, it
requires taking a stop on such news and making effective preventions..
An organization called the Repository for Germinal choice in Escondid.pdf
An organization called the Repository for Germinal choice in Escondido, CA once served as a
sperm bank for Nobel Prize winners and others possessing high IQs. Dozens of babies have now
been produced by artificial insemination from the sperm bank. Do you regard this as wise or
unwise, ethic or unethical, foolish or inspired?
Solution
The major rising ethical challenge is the connection between the pre-selection of embryos for
\"babies with high IQ (intelligent quoscent) based on meticulous genetic analysis of sperm
donation & artificial insemination followed by rising discrimination of \"disabled people\".
Therefore, even though, it is a \"wise methodology\" but highly \"unethical\" and foolish due to
chances of occurrence of genetic abnormalities. This ethical problem is associated with selection
of future children based on their low levels of disabilities and abnormalities. The genetic
abnormalities of prenatal baby with any other serious diseases but this method of screening is
leading to reinforcement of disable people discrimination and stigmatization. There is chance of
unintended multiple pregnancy & success rate is lesser. The meticulous ethical factor associated
with donated sperm (for high IQ) via artificial insemination is any presence of sexually
transmitted diseases (HIV etc), genetic disease carriers (sickle cell anemia). This methodology is
regarded as “wise protocol” to those women who are unable to participate in sexual intercourse
followed by sperm implantation into the women fallopian tube for fertilization with egg..
XYZ stock price and dividend history are as follows Year Beginning-.pdf
XYZ stock price and dividend history are as follows: Year Beginning-of-Year Price Dividend
Paid at Year-End 2010 $ 140 $ 4 2011 $ 159 $ 4 2012 $ 132 $ 4 2013 $ 137 $ 4 An investor buys
five shares of XYZ at the beginning of 2010, buys another three shares at the beginning of 2011,
sells one share at the beginning of 2012, and sells all seven remaining shares at the beginning of
2013. a. What are the arithmetic and geometric average time-weighted rates of return for the
investor? (Do not round intermediate calculations. Round your answers to 2 decimal places.)
Arithmetic mean 2.93 % Geometric mean 2.08 % b-1. Prepare a chart of cash flows for the four
dates corresponding to the turns of the year for January 1, 2010, to January 1, 2013. (Negative
amounts should be indicated by a minus sign.) Date Cash Flow 1/1/2010 $ -700 1/1/2011 -457
1/1/2012 164 1/1/2013 987 b-2. What is the dollar-weighted rate of return? (Hint: If your
calculator cannot calculate internal rate of return, you will have to use a spreadsheet or trial and
error.) (Negative value should be indicated by a minus sign. Round your answer to 4 decimal
places.) Rate of return %
Solution
a) Year Beginning-of-Year Price Dividend Paid at Year-End 2010 $140.00 $4.00
2011 $159.00 $4.00 2012 $132.00 $4.00 2013 $137.00 $4.00 Return = [(Capital
Gains + Dividend)/Price] Year 2010-2011 (($159 - $140)+$4)/$140 16.43% Year 2011-
2012 (($132 - $159)+$4)/$132 -14.47% Year 2012-2013 (($137 - $132)+$4)/$132 6.82%
Arithmetic mean: = (16.43%+(14.47%)+6.82%)/3 2.93% Geometric Mean Return
1+ return% 16.43% 1.164 -14.47% 0.855 6.82% 1.068 Geometric Mean =(
(1.164 x .855 x 1.068)^(1/3 ))-1 2.08% b-1. Prepare a chart of cash flows for the four
dates corresponding to the turns of the year for January 1, 2010, to January 1,2013.
Date 1/1/2010 1/1/2011 1/1/2012 1/1/2013 Cash Flow -$700.00 -$457.00 $164.00 $987.00
Date Cash Flow 1/1/2010 -$700.00 Purchase of 5 shares at $140 per share 1/1/2011 -
$457.00 Purchase of 3 shares at $159, plus dividend income on 5 shares held 1/1/2012
$164.00 Sale of 1 share at $132, plus dividend income on 8 shares held 1/1/2013 $987.00
Sale of 7 share at $137, plus dividend income on 7 shares held b-2 Date Cash Flow
1/1/2010 -$700.00 1/1/2011 -$457.00 1/1/2012 $164.00 1/1/2013 $987.00
IRR = Rate of Return 0.21%.
a- Define public goods and common resources. How are they similar an.pdf
a- Define public goods and common resources. How are they similar and how are they different.
Are markets efficient in the presence of public goods and common resources?
b- Why or why not?
Solution
Public goods is a good which is non excludable and non rivalrous. Where use by one individual
doesnot effect the availabilty by others
Common goods are rival but not excludable
Example of public goods are national defense, uncongested nontoll roada
Example of common resource are fish in the ocean, environment etc
Market doesnot effect the public good because the person using it is a free rider. He will think
that others will pay for his good.
There can be a market interuption in common resources as private player can come in and
develop a market for products like pure air and water..
A fin may be manufactured as an integral part of a surface by using .pdf
A fin may be manufactured as an integral part of a surface by using a casting or extrusion
process, or it may be separately brazed or adhered to the surface. From thermal considerations
which option is preferred?
Solution
When fins are manufactured as a integral part of a surface by using casting or extrusion process,
then due to more conductive heat transfer, it is more acceptable..
Recommended
Describe how a selectively permeable membrane is involved in osmosis.pdf
Describe how a selectively permeable membrane is involved in osmosis. Include the role that the
solute concentration plays in the direction of water movement. Now think about how this process
may differ between plant and animal cells. For instance, how might cell walls disrupt the role of
solute concentration and cause one to refute a hypothesis for the direction of water movement
based on water concentration alone?
Solution
Let me first briefly descibe you how does osmosis happen. Consider there are two compartments
contaning a particular solute in a solvent seperated by a semi permeable membrane. If there
exists a solute difference between the two compartments, then solvent moves from the region of
lower conceration (with respect to solute) to higher concentration (with respect to solute) until it
reaches equilibrium. That means semi permeable membrane is permeable to solvent. Now comes
the situation of in vivo (i.e., within the body). The cells, whether from animals or plants are
usually hypertonic in nature that means cells have higher ionic concentration compared to its
external environment (water is the solvent). Then how do these cells maintain such a higher ionic
concentration by refuting the process of osmosis/diffusion. First let us consider the plant cell.
Plant cell has two coverages, namely plasma membrane and cell wall. Cell wall in plant cell is
made up of cellulose and cellulose is a polysacharide provides the rigidity to the cells. Actually,
it is the plasma membrane which does not allow the movement of water molecules to cross based
on gradient of solutes. Let me talk about the cell wall at the end of this answer. What makes that
plasma membrane to refute the law of osmosis ? It is its structural organization. Plasma
membrane is made up of phospholipids, cholesterol and proteins mainly. Phospholipids are
oriented in bilayer form facing its hydrophilic (water loving) head at both the ends interacing
with cytoplasma and extracellular environment and its hydrophobic (water hating) tails are
oriented deep within the membrane interacing each other. Plasma membrane of either plant or
animal are highly impermeable to the solutes and water. Permeability of plasma membrane
highly depends on the nature of solutes. If solute is smaller in size and hydrophobic in nature it
diffuses through the membrane quiet easily but it is difficult for the hydrophilic and largge size
solutes. Charge of the solutes also plays the major role. It is not only based on the concentration
gradient but also based on charge gradient. Hence it is known as electrochemical gradient. It is
actually a beautiful mechanism of cells to produce energy required for the cell based on
electrochemical gradient (within mitochondria) And for water, it is difficult to pass through.
There is a term called \"Activation energy\". Energy need to be supplied in order to facilitate the
movement of solutes.Lower the activation energy, lesser the energy required and vica versa.
Comi.
Compare and contrast Eriksons fifth stage of personality developme.pdf
Compare and contrast Erikson\'s fifth stage of personality development and Marcia\'s theory on
identity statuses. Which do you agree with and why?
Solution
Yes , i agree , as the Marcia\'s theory on identity statuses are developed based on Erikson\'s fifth
stage of personality development.
The fifth phase of Erikson\'s life stage hypothesis is identity and role confusion.. Strains for a
juvenile can know him/herself, what s/he will do with his/her life, fitting in gathering sand
encountering things. Knowing him/herself is imperative to a pre-adult in light of the fact that on
the off chance that he or she knows him/herself, his/her capacities, he or she can shape his/her
life as indicated by the properties and capacities that s/he has. Young people take a stab at
encountering things, for example, fitting into social gatherings, encountering things to think
about themselves and capability of their identity regardless of the possibility that they need to go
out on a limb. Accordingly to these strains, these encounters may bring about change in conduct,
identity and look of a youthful. What\'s more, these encounters keep on happening until the pre-
adult get over this identity and role confusion.
In light of Erik Erikson\'s noteworthy work on character and psychosocial improvement in the
1960s, Canadian formative clinician James Marcia refined and amplified Erikson\'s model,
principally concentrating on youthful development. Tending to Erikson\'s thought of character
emergency, Marcia set that the immature stage comprises neither of personality determination
nor personality disarray, but instead how much one has investigated and focused on a personality
in an assortment of life areas from employment, religion, social decisions, sex parts, et cetera.
Marcia\'s hypothesis of character accomplishment contends that two unmistakable parts frame a
juvenile\'s personality: emergency (i. e. a period when one\'s qualities and decisions are being
reexamined) and duty. He characterized a crisis as a period of change where old qualities or
decisions are being reevaluated. The end result of an crisis prompts to a guarantee made to a
specific part or esteem..
Upon developing a semi-structured interview for identity research, Marcia proposed Identity
Statuses of psychological identity development:
· Identity Diffusion –: the status in which the adolescent does no have a feeling of having
options; he or she has not yet made (nor is endeavoring/willing to make) a promise
Identity Foreclosure : the status in which the immature appears to focus on some significant
parts, qualities, or objectives for what\'s to come. Teenagers in this stage have not encountered a
personality emergency. They have a tendency to fit in with the desires of others in regards to
their future (e. g. permitting a parent to decide a profession course) As such, these people have
not investigated a scope of alternatives.
Identity Moratorium – the status in which the juvenile is as of now in a.
Briefly describe the phenomenon of exon shuffling and provide an exa.pdf
Briefly describe the phenomenon of exon shuffling and provide an example of this in living
systems
Solution
exon shuffling is a molecular mechanism for the formation of new genes. in this process 2 or
more exons are from different genes are brought together at a non-homologous site or there is a
duplication in the exons forming new intron-exon structures. exon shuffling takes place by
various processes such as transposon-mediated, cross over between gametes during sexual
recombination or any inappropriate recombinations.
living examples for exon shuffling are metazoans such as Homo sapiens have post-
transcriptional exon shuffling, Drosophila with 39% of gene rearrangements.
during evolution, 1-1 shuffling units were found in Trichoplax adhaerans and Nematostella
vectensis..
Biological Science in the Newsdentify source (internet link) and d.pdf
Biological Science in the News
dentify source (internet link) and date of news.
Write the title of the news article.
Use the D.A.R.E. critical thinking components to discuss article: Define, Analyze, Resolve, and
Evaluate.
Define: What is article about? (do not discuss the important points here)
Analyze: a. Discuss salient/important ideas or points. b. What impact do you think this news has
or will have on you or the world we live in?
Resolve: Generate a few questions that you have about the information.
Evaluate: Is it a controversial or a critical issue that needs more research? Is it information you
think should be more widely publicized? Should any action be taken? by whom? Explain your
thoughts.
Solution
Biological Science in the News
News presents in form of sound, picture, text individually or in combinations. Various studies
reveal that sound, picture or text has significant effects on human’s body and behavior. On the
basis of that, the article has greater potential to discuss the effects of news through biological
aspects. The representation and information of news makes human feel better or worse
accordingly. That feelings and impressions effect the brain of human body significantly which
can measure by the level of hormones like dopamine, serotonine, noradrenaline and others.
These impacts may bring society to feel accountable or no accountable to the particular effects of
news. People live in society and news comes from their interactions. Therefore, it would have
greater impacts to the physiological and behavioral factors of human. Now, scientist, activists,
and researchers are pointing out the possible harmful effects of news. Many news channels are
serving news on dinning plates. They are making the news exclusive and hot. Therefore, it
requires taking a stop on such news and making effective preventions..
An organization called the Repository for Germinal choice in Escondid.pdf
An organization called the Repository for Germinal choice in Escondido, CA once served as a
sperm bank for Nobel Prize winners and others possessing high IQs. Dozens of babies have now
been produced by artificial insemination from the sperm bank. Do you regard this as wise or
unwise, ethic or unethical, foolish or inspired?
Solution
The major rising ethical challenge is the connection between the pre-selection of embryos for
\"babies with high IQ (intelligent quoscent) based on meticulous genetic analysis of sperm
donation & artificial insemination followed by rising discrimination of \"disabled people\".
Therefore, even though, it is a \"wise methodology\" but highly \"unethical\" and foolish due to
chances of occurrence of genetic abnormalities. This ethical problem is associated with selection
of future children based on their low levels of disabilities and abnormalities. The genetic
abnormalities of prenatal baby with any other serious diseases but this method of screening is
leading to reinforcement of disable people discrimination and stigmatization. There is chance of
unintended multiple pregnancy & success rate is lesser. The meticulous ethical factor associated
with donated sperm (for high IQ) via artificial insemination is any presence of sexually
transmitted diseases (HIV etc), genetic disease carriers (sickle cell anemia). This methodology is
regarded as “wise protocol” to those women who are unable to participate in sexual intercourse
followed by sperm implantation into the women fallopian tube for fertilization with egg..
XYZ stock price and dividend history are as follows Year Beginning-.pdf
XYZ stock price and dividend history are as follows: Year Beginning-of-Year Price Dividend
Paid at Year-End 2010 $ 140 $ 4 2011 $ 159 $ 4 2012 $ 132 $ 4 2013 $ 137 $ 4 An investor buys
five shares of XYZ at the beginning of 2010, buys another three shares at the beginning of 2011,
sells one share at the beginning of 2012, and sells all seven remaining shares at the beginning of
2013. a. What are the arithmetic and geometric average time-weighted rates of return for the
investor? (Do not round intermediate calculations. Round your answers to 2 decimal places.)
Arithmetic mean 2.93 % Geometric mean 2.08 % b-1. Prepare a chart of cash flows for the four
dates corresponding to the turns of the year for January 1, 2010, to January 1, 2013. (Negative
amounts should be indicated by a minus sign.) Date Cash Flow 1/1/2010 $ -700 1/1/2011 -457
1/1/2012 164 1/1/2013 987 b-2. What is the dollar-weighted rate of return? (Hint: If your
calculator cannot calculate internal rate of return, you will have to use a spreadsheet or trial and
error.) (Negative value should be indicated by a minus sign. Round your answer to 4 decimal
places.) Rate of return %
Solution
a) Year Beginning-of-Year Price Dividend Paid at Year-End 2010 $140.00 $4.00
2011 $159.00 $4.00 2012 $132.00 $4.00 2013 $137.00 $4.00 Return = [(Capital
Gains + Dividend)/Price] Year 2010-2011 (($159 - $140)+$4)/$140 16.43% Year 2011-
2012 (($132 - $159)+$4)/$132 -14.47% Year 2012-2013 (($137 - $132)+$4)/$132 6.82%
Arithmetic mean: = (16.43%+(14.47%)+6.82%)/3 2.93% Geometric Mean Return
1+ return% 16.43% 1.164 -14.47% 0.855 6.82% 1.068 Geometric Mean =(
(1.164 x .855 x 1.068)^(1/3 ))-1 2.08% b-1. Prepare a chart of cash flows for the four
dates corresponding to the turns of the year for January 1, 2010, to January 1,2013.
Date 1/1/2010 1/1/2011 1/1/2012 1/1/2013 Cash Flow -$700.00 -$457.00 $164.00 $987.00
Date Cash Flow 1/1/2010 -$700.00 Purchase of 5 shares at $140 per share 1/1/2011 -
$457.00 Purchase of 3 shares at $159, plus dividend income on 5 shares held 1/1/2012
$164.00 Sale of 1 share at $132, plus dividend income on 8 shares held 1/1/2013 $987.00
Sale of 7 share at $137, plus dividend income on 7 shares held b-2 Date Cash Flow
1/1/2010 -$700.00 1/1/2011 -$457.00 1/1/2012 $164.00 1/1/2013 $987.00
IRR = Rate of Return 0.21%.
a- Define public goods and common resources. How are they similar an.pdf
a- Define public goods and common resources. How are they similar and how are they different.
Are markets efficient in the presence of public goods and common resources?
b- Why or why not?
Solution
Public goods is a good which is non excludable and non rivalrous. Where use by one individual
doesnot effect the availabilty by others
Common goods are rival but not excludable
Example of public goods are national defense, uncongested nontoll roada
Example of common resource are fish in the ocean, environment etc
Market doesnot effect the public good because the person using it is a free rider. He will think
that others will pay for his good.
There can be a market interuption in common resources as private player can come in and
develop a market for products like pure air and water..
A fin may be manufactured as an integral part of a surface by using .pdf
A fin may be manufactured as an integral part of a surface by using a casting or extrusion
process, or it may be separately brazed or adhered to the surface. From thermal considerations
which option is preferred?
Solution
When fins are manufactured as a integral part of a surface by using casting or extrusion process,
then due to more conductive heat transfer, it is more acceptable..
Which of the following statements is false Financial accounting mus.pdf
Which of the following statements is false? Financial accounting must conform to GAAP. There
is no overlap between financial and managerial accounting. Managerial accounting sometimes
relies on past information. Managerial accounting does not need to conform to GAAP
Solution
The false statement is
Managerial accounting sometimes relies on past information
(other statements are true).
What does IPO underpricing refer to When in recent decades has it b.pdf
What does IPO underpricing refer to? When in recent decades has it been most severe? What are
some reasons that underwriters might want to underprice their IPOs? On the other hand, what
might be some problems with this approach?
Solution
IPO refers to Initial Public Offer and underpricing refers to Pricing of shares lower than the
market value. Hence, IPO Underpricing refers to the listing of the initial issue of the company at
the rate below the market value of the share.
Underwriters does so to make the shares feasible for every investor to invest in. Not every share
is approachable to the small investors. So the motive of the IPO Underpricing is to make the
issue approachable financially to small and big investors both.Thereby, knocking the
opportunities for potential small investors and grabing small pockets of many investors.
The problem can definitely be that the big investors doesnot look these IPO\'s and show less
interest in investing them and hence the issuer will not be able to collect fund in one go..
When summing forces in the x direction why does Force of Ax be i.pdf
When summing forces in the x direction why does Force of Ax be included? Wouldn\'t Ax not be
included because it is considered an internal force?
Solution
Ax is an external force that\'s why it is included in calculating the net force in a direction
.Internal forces have no role in FBD of a body as the are cancelled on its on by action reaction.
Ax is included in the net force in the X-direction because it is one of the force that is applied
externally and bring a change to the system..
Which of the following statements true about Cyanobacteria Cyanobact.pdf
Which of the following statements true about Cyanobacteria? Cyanobacteria ... are a diverse,
polyphyletic group of bacteria. use chlorophyll a and release oxygen during photosynthesis. are
the only group of autotrophic bacteria? can reproduce sexually. are obligate aerobes.
Solution
Ans. B and E
Cyanobacteria also known as blue green algae as it is blue green in color present in aquatic
environment and produce its own food using chlorophyll a and release oxygen as a byproduct in
splitting of water.
Other bacteria use H2S and hence doesn\'t release oxygen and also doesnot possess chlorophyll
a.
Cyanobacteria are obligate parasites and prefer dilute carbon source.
What is the temperature requited to denature myoglobin without guani.pdf
What is the temperature requited to denature myoglobin without guanidine?What is delta S and
delta H of myoglobin denaturation without guanidine?
Solution
he temperature to denature myoglobin without guanidine is 30 degree C(celsius).
Go= HoTSo = RT ln KD ->(1)
Ln KD =(HoTSo)/RT ->2
lnKD=Ho/RT+ So/R( 3)
dlnKD/d(1/T)=Ho/R=H0vHoff/R(4)
or
dlnKD/dT=H0vHoff/RT2(5).
Which agency monitors al Confirmed cases of food-borne illnes FDA. C.pdf
Which agency monitors al Confirmed cases of food-borne illnes? FDA. CDC USDA EPA
Solution
Answer 1 : Food and Drug Administration (FDA) monitor outbreak of illness disease from food
and then report is sent to Centre for Disease Control and Prevention
CDC:Centers for Disease Control and Prevention
USDA:United States Department of Agriculture deals with agriculture
EPA: Environment Protection Agency deals with environment related issue.
What role does ethics play in leadership Do you believe that some p.pdf
What role does ethics play in leadership? Do you believe that some people abuse it? Why or why
not? Provide examples.
Solution
his is extremely interesting territory.
Organisations and people within organisations rarely if ever demonstrate a homogeneous mix of
ethical values, but they do have to function.
Ask the question. How will the Iraq even create a temporary framework to govern given that it
seeks to balance such disparate issues?
History tells us that we compromise because the alternatives are often far worse. Pragmatism
becomes the order of the day and I think that this is a pattern that is repeated in corporations.
Organisations function according to their perception of how they need to respond to the power
of the circumstances around them. There is a behavioural bottom line for organisations which
should not be crossed (ethical considerations embodied in the law) but, there is a vast array of
other ethical issues that may or may not be taken on board. They are generally only taken on
board when it is perceived that the short term self interest of the company matches the ethical
value.
Organisations then present different images to their stakeholders to maximise the warm glow
that they project.
Profit to the shareholders.
Respect me vibes to the institutions.
We work for our workforce vibes to employees and their supporters.
All these images conflict and one of the key roles of leadership (setting the agenda) is to ensure
that this conflict is managed and the business machine does not slow down.
Those leaders who have gone through the processes of:
1. Learning to lead and manage themselves.
2. Developing a clear understanding their values and goals.
3. Learning to lead and motivate others.
4. Learning how to apply leadership strategically.
will manage without falling off the horse.
It is unlikely however, that they will lead on ethics even if their standpoint is ahead of their
company\'s minimal position.
They are more likely to gratefully respond to what the social consensus
seeks to make imperative..
What is Simmonds’ disease aka pituitary cachexia Describe the featu.pdf
What is Simmonds’ disease aka pituitary cachexia? Describe the features of the disease
Solution
Answer: Simmonds\' disease or pitutary cachexia is a disease caused by the destruction of the
anterior lobe of the pitutary gland due to any cause, like post partum necrosis of the pitutary
gland, trauma like bullet injuries or fractures at the base of the skull, morbidities like tuberculosis
or syphilis, tumors of the pitutary and supra cellar cysts are some of the main caises of
Simmonds\' disease.
Features are:
1. as post-partum necrosis is one of the major causes of simonds\' disease, it is most common
betweeb ages of 20- 45 years. it is more common in women than men.
2. earliest manifestation of the disease are evident soon after few days from puerperium.
3. Failure of lactation or rather engorgement of the breasts is noticed.
4. Patients are of average nutrition and have a pale, dry, rather sallow skin suggesting a degree
of anemia more severe than what the hematological examinations reveal with a possible
subthyroid condition.
5. Progeria is unusual
6. Head hair is normal in size and texture.
7. eyebrows are thin.
8. disturbance in menstruation with amennorhia or scanty and irregular periods.
9. Loss of libido
10. atrophy of genetelia.
11. bear a striking resemblance to myxoedema. skin of face and arms is dry and scaly with a faint
yellow colouration.
12. senstivity to cold is pronounced.
13. well marked erythema ab igne of legs is pronounced..
14. adrenal lesions lead to loss of pubic and axillary hair.
15. Keplers\' Test for adrenal dysfunction is positive.
Treatment: Horone replacement therapy is the only available management so far..
6. All plants produce __________ by mitosis and __________ by meiosi.pdf
6. All plants produce __________ by mitosis and __________ by meiosis. A)spores, gametes
B)gametes, gametes C)gametes, spores D)spores, spores E)spores, gametes and spores 7. In a
heterosporous life cycle, the microspore develops into the _____ gametophyte, while the
megaspore develops into the ______ gametophyte. A)female, male B)male, female C)diploid,
haploid D)haploid, diploid E)None of the above 8. Asexual reproduction in liverworts is
accomplished by A)gametophytes. B)spores. C)gemmae. D)tracheids. 9. You are walking along
a roadside and find a plant with the following characteristics: very thin waxy cuticle, stomata,
simple leaves in whorls around a central stem, independent sporophyte and gametophyte,
sporangia in strobili. This plant is most likely a member of which of the following phyla?
A)Bryophyta B)Sphenophyta C)Pterophyta D)Lycophyta 10. Plants differ from algae in that only
plants A)are photosynthetic. B)are multicellular. C)possess chlorophyll. D)have multicellular
embryos protected by the parent. E)are eukaryotic. 11. Which statement about the alternation of
generations in plants is not true? A) The plant life cycle is characterized by diploid and haploid
forms. B)Meiosis occurs in sporangia. C)Gametes are always produced by meiosis. D)The
zygote is the first cell of the sporophyte generation. E)The gametophyte and sporophyte differ
genetically. 12. The most abundant gymnosperm phylum today is A) Cycadophyta. B)
Ginkgophyta. C) Gnetophyta. D) Coniferophyta. E) None of the above 13. Coniferous
gymnosperms, such as pines, depend primarily on __________ for pollination; thus, the plants
produce large quantities of pollen that disperse over large areas during the spring. A) insects B)
birds C) water D) wind E) mammals 14. An evolutionary trend that runs throughout the plant
kingdom is that the sporophyte generation ___ and is more independent of the gametophyte, and
the gametophyte generation _____ and is more dependent upon the sporophyte. A) becomes
smaller, becomes smaller B) becomes larger, becomes smaller C) becomes smaller, becomes
larger D) becomes larger, becomes larger E) does not change in size, becomes larger 15.
Angiosperms differ from other plants in that two male gametes, contained within a single male
gametophyte, participate in fertilization events. One sperm nucleus combines with the egg to
produce a diploid zygote. The other sperm nucleus combines with two other haploid nuclei of the
female gametophyte. This process is called A) biparental inheritance. B) multiple paternity. C)
double fertilization. D) biparental fertilization. E) multiple fertilization. 16. The reproductive
organ of angiosperms is the A)sporangium. B) flower. C) cone. D) archegonium. E) sporophyte.
17. The prominent components of Earth\'s modern land flora in most areas are A) angiosperms.
B) gymnosperms. C) ferns. D) bryophytes. E) club mosses. 18. Flowers with insect pollination
have showy A) petals. B) sepals. C) anthers. D) fruits 19. In a.
What is the pH of a solution that is formed at 25C by combining 300 .pdf
What is the pH of a solution that is formed at 25C by combining 300 mL of 0.040 M NaOH with
400 mL of 0.030 M HCl?
Solution
The amount of OH- ions released by NaOH is 0.04*300.
The amount of H+ ions released by HCl is 0.03*400
So the amount of H+ by HCl and amount of OH- by NaOH cancel each other.
This inturn makes the water neutral and the
pH remains 7.
pH = 7.
ulsalullailut Ul glucose linked to muctose. Similarly, link ing three.pdf
ulsalullailut Ul glucose linked to muctose. Similarly, link ing three or more monosaccharides
forms a polysaccharide such as starch, glycogen, or cellulose (fig. 6.3). Question 1 Examine
figure 6.2. hich groups of a glucose molecule are involved in forming a polysaccharide? Shade
the groups with a pencil.
Solution
In the structiure of glucose, the OH groups are present on 1, 2, 3, and 4th position of the ring and
at 5th position CH2OH is present. When a glucose molecule involves in the formation of
polysaccharide, the OH group at 1st position of a aglucose molecule interacts with the OH group
at 4th position of another glucose molecule..
This is a photograph of an organelle found in living cells. Use it to.pdf
This is a photograph of an organelle found in living cells. Use it to help answer questions 1, 2
and 3. (From Essential Cell Biology, Alberts Betal (2009) 3rd edition; Garland Science, NY &
London. Photo by Daniel SFriend.) 1) What is the name of this organelle? D. O Chloroplast
Endoplasmic Mitochondrion Ribosome reticulum 2 What is the function of this organelle? c, O
D. O Anaerobic Aerobic Protein Photosynthesis respiration respiration release 3 Which one of
the following substances is produced when this organelle is functioning Oxygen Carbon Glucose
Starch dioxide
Solution
1: C Mitochondria; The given image shows mitochondria as the inner membrane is shown like
finger like projections which is characteristic feature of mitochondria.
2: B Aerobic respiration; Mitochondria are the double membrane bound organelles which serve
as site for aerobic respiration. The Kreb cycle and electron transport chain take place in it.
3: B Carbon dixoide; CO2 is the product of Kreb cycle. Glucose enters the glycoysis and forms
pyruvic acid which in turn enters the Kreb cycle in form of Acetyl CoA and is decarboxylated..
This Way to the Gas Ladies and Gentlemen Provide scholarlyacade.pdf
\"This Way to the Gas Ladies and Gentlemen\" Provide scholarly/academic journal articles
related to this reading and some short information about each article
Solution
This Way for the Gas, Ladies and Gentlemen, also known as Ladies and Gentlemen, to the Gas
Chamber, is a collection of short stories by Tadeusz Borowski, which were inspired by the
author\'s concentration camp experience. The original title in the Polish language was
PoZegnanie z MariA (Farewell to Maria). Following two year imprisonment at Auschwitz,
Borowski had been liberated from the Dachau concentration camp in the spring of 1945, and
went on to write his collection in the following years in Stalinist Poland. The book, translated in
1959, was featured in the Penguin\'s series \"Writers from the Other Europe\" from the 1970s..
The steps in the electron transport chain in anaerobic respiring bac.pdf
The steps in the electron transport chain in anaerobic respiring bacteria, and the fermentation
pathway in fermenting bacteria both: Produce ATP. Produce Ethanol. Produce NADH.
Generate a proton gradient. Regenerate NAD^+.
Solution
Answer: Produce ATP
Anaerobic respiration is a process without oxygen and uses a respiratory electron transport chain
but does not use oxygen as the electron acceptors and generates only two molecules of ATP. It
also produces ethanol or lactic acid
Fermentation (alcholic and lactic acid fermentation) occurs in bacteria that convert sugars into
acids, alcohol, or gases. In the presence of O2, NADH and Pyruvate are used to generate the
ATP.
The September Club is a social club. To be a member one must have be.pdf
The September Club is a social club. To be a member one must have been born in September. (i)
If the September Club has exactly 30 members, what is the probability that at least two of its
members have the same birthday (disregarding the year of birth)? (ii) If the September Club has
exactly 10 members, what is the probability that at least two of its members have the same
birthday (disregarding the year of birth)?
Solution
1. 29^30 / 30^30
2. 9^30 / 10^30.
Sequence the following events that led to our understanding of DNA in.pdf
Sequence the following events that led to our understanding of DNA in chronological order.
The human genome was sequenced. X-ray diffraction revealed the 3D shape of DNA. A
harmless bacterial strain found to cause disease after receiving DNA (not protein) from another
bacterial strain. A model of DNA was created showing how its subunits form is double-helical
shape. Viruses labeled with radioactive phosphorous injected their DNA into bacteria.
Solution
A harmless bacterial strain found to causedisease after recieving DNA (not protien) from another
bacterial strain -...................... experiment by Avery, McCarty, and MacLeod: Identifying the
transforming principle (1944)
Viruses labelled with radioactive phosphorus injected their DNA into bacteria..........(Hershey-
Chase experiments 1952)
A model of DNA was created showing how its subunits form its double helical shape ..........
(Watson & Francis crick, 7 march, 1953)
X-ray diffraction revealed the 3D shape of DNA.......(Rosalind Franklin April 1953, acta
crystallographica)
Human genome was sequenced ......(April 2003).
Sallys brother is color-blinded. Her husband is normal. What is the.pdf
Sally\'s brother is color-blinded. Her husband is normal. What is the chance for her son to be
color-blinded?
Solution
Answer:one in two (50%) chance
Color blindness is X linked recessive inheritance.
two copies of a disease allele on the X chromosome are required for an individual with two X
chromosomes (a female) to be affected with an X-linked recessive disease.
Affected males transmit the disease allele to all of their daughters, who are then carriers, but to
none of their sons. Therefore Sally’s brother must have got the disease X chromosome from her
mom.
Sally must be carrier.
For a carrier female, with each pregnancy there is a one in two (50%) chance her sons will
inherit the disease allele..
Rushenberg Corporations operating leverage is 10.8. If the company.pdf
Rushenberg Corporation\'s operating leverage is 10.8. If the company\'s sales increase by 14%,
its net operating income should increase by about:
Multiple Choice 10.8%, 77.1% ,14.0%, 151.2%
Solution
operating leverage=% change in net operating income/% change in sales
Hence net operating income should increase by=(10.8*14%)
which is equal to
=151.2%.
problem 2 1. Give an example of a function f Q N that is surjective..pdf
problem 2 1. Give an example of a function f Q N that is surjective. (Note: Q 12la, b E z, b 0) 2.
Let X e such that there exists a surjective function f X Z. Prove that X is infinite. 3. Let P
represent the set of all polynomials with integer coefficients. Prove that P is countable. 4. Let I
0,1] and J 0.21 losed intervals of the real line). Show that III J lJl.
Solution
A surjective function is called a surjection.
Example: f(x)=x
(2). If X is a countable set, then we refer to an onto function f : N X as an enumeration of X, and
write X = {xn : n N}, where xn = f(n).
(3).
P(n) = {n is an element of the integers| axn + bxn-1 + ... where a,b... are integers.}
P(1) = {ax1}. There is one element in this set therefore this set is countable.
Assume P(k) is true, i.e.
P(k) = {k is an element of the integers| axk + bxk-1 + ... where a,b... are integers.} is a countable
set.
Show P(K+1) is true i.e. that
P(k+1) = {k+1 is an element of the integers| ax(k+1) + bxk + cx(k-1) ... where a,b,c... are
integers.} is a countable set.
By our assumptpn we are trying to show that {k+1 is an element of integers | ax(k+1) + a
countable set) is a countable set.
(4)
Two sets I, J have equal cardinality, written I J , if there is a one-to-one, onto map f : I J
A surjective function is called a surjection.
Example:f(x)=x
(2). If X is a countable set, then we refer to an onto function f : N X as an enumeration of X, and
write X = {xn : n N}, where xn = f(n).
(3).
P(n) = {n is an element of the integers| ax^n + bx^n-1 + ... where a,b... are integers.}
P(1) = {ax^1}. There is one element in this set therefore this set is countable.
Assume P(k) is true, i.e.
P(k) = {k is an element of the integers| ax^k + bx^k-1 + ... where a,b... are integers.} is a
countable set.
Show P(K+1) is true i.e. that
P(k+1) = {k+1 is an element of the integers| ax^(k+1) + bx^k + cx^(k-1) ... where a,b,c... are
integers.} is a countable set.
By our assumptpn we are trying to show that {k+1 is an element of integers | ax^(k+1) + a
countable set) is a countable set.
(4)
Two sets I, J have equal cardinality, written I J , if there is a one-to-one, onto map f : I J.
Placentation in mammals is initiated by Cytotrophoblasts Syncytiotr.pdf
Placentation in mammals is initiated by Cytotrophoblasts Syncytiotrophoblasts
Cytotrophoblasts closest to the ICM Syncyttiotrophoblasts closest to the ICM Cell migration
and specification is most closely related to FGF\'s WNT\'s TGF beta\'s Sonic Hedgehog Cilia
move Nodal vesicular parcles Right to left Left to right anterior to posterior medial to lateral
In mammals primary neurulation is responsible for All development within the cranial vault All
development within the cranial vault up to the cervical vertebrae All development within the
cranial vault up to the thorascic vertebrae Aur development within the cranial vault up to the
sacral vertebrae
Solution
Question 12: Cytotrophoblastic cells closest to the ICM ( the inner cell mass) initiate the
placentation in mammals..
Biological Screening of Herbal Drugs in detailed.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
The Challenger.pdf DNHS Official Publication
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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Which of the following statements is false Financial accounting mus.pdf
Which of the following statements is false? Financial accounting must conform to GAAP. There
is no overlap between financial and managerial accounting. Managerial accounting sometimes
relies on past information. Managerial accounting does not need to conform to GAAP
Solution
The false statement is
Managerial accounting sometimes relies on past information
(other statements are true).
What does IPO underpricing refer to When in recent decades has it b.pdf
What does IPO underpricing refer to? When in recent decades has it been most severe? What are
some reasons that underwriters might want to underprice their IPOs? On the other hand, what
might be some problems with this approach?
Solution
IPO refers to Initial Public Offer and underpricing refers to Pricing of shares lower than the
market value. Hence, IPO Underpricing refers to the listing of the initial issue of the company at
the rate below the market value of the share.
Underwriters does so to make the shares feasible for every investor to invest in. Not every share
is approachable to the small investors. So the motive of the IPO Underpricing is to make the
issue approachable financially to small and big investors both.Thereby, knocking the
opportunities for potential small investors and grabing small pockets of many investors.
The problem can definitely be that the big investors doesnot look these IPO\'s and show less
interest in investing them and hence the issuer will not be able to collect fund in one go..
When summing forces in the x direction why does Force of Ax be i.pdf
When summing forces in the x direction why does Force of Ax be included? Wouldn\'t Ax not be
included because it is considered an internal force?
Solution
Ax is an external force that\'s why it is included in calculating the net force in a direction
.Internal forces have no role in FBD of a body as the are cancelled on its on by action reaction.
Ax is included in the net force in the X-direction because it is one of the force that is applied
externally and bring a change to the system..
Which of the following statements true about Cyanobacteria Cyanobact.pdf
Which of the following statements true about Cyanobacteria? Cyanobacteria ... are a diverse,
polyphyletic group of bacteria. use chlorophyll a and release oxygen during photosynthesis. are
the only group of autotrophic bacteria? can reproduce sexually. are obligate aerobes.
Solution
Ans. B and E
Cyanobacteria also known as blue green algae as it is blue green in color present in aquatic
environment and produce its own food using chlorophyll a and release oxygen as a byproduct in
splitting of water.
Other bacteria use H2S and hence doesn\'t release oxygen and also doesnot possess chlorophyll
a.
Cyanobacteria are obligate parasites and prefer dilute carbon source.
What is the temperature requited to denature myoglobin without guani.pdf
What is the temperature requited to denature myoglobin without guanidine?What is delta S and
delta H of myoglobin denaturation without guanidine?
Solution
he temperature to denature myoglobin without guanidine is 30 degree C(celsius).
Go= HoTSo = RT ln KD ->(1)
Ln KD =(HoTSo)/RT ->2
lnKD=Ho/RT+ So/R( 3)
dlnKD/d(1/T)=Ho/R=H0vHoff/R(4)
or
dlnKD/dT=H0vHoff/RT2(5).
Which agency monitors al Confirmed cases of food-borne illnes FDA. C.pdf
Which agency monitors al Confirmed cases of food-borne illnes? FDA. CDC USDA EPA
Solution
Answer 1 : Food and Drug Administration (FDA) monitor outbreak of illness disease from food
and then report is sent to Centre for Disease Control and Prevention
CDC:Centers for Disease Control and Prevention
USDA:United States Department of Agriculture deals with agriculture
EPA: Environment Protection Agency deals with environment related issue.
What role does ethics play in leadership Do you believe that some p.pdf
What role does ethics play in leadership? Do you believe that some people abuse it? Why or why
not? Provide examples.
Solution
his is extremely interesting territory.
Organisations and people within organisations rarely if ever demonstrate a homogeneous mix of
ethical values, but they do have to function.
Ask the question. How will the Iraq even create a temporary framework to govern given that it
seeks to balance such disparate issues?
History tells us that we compromise because the alternatives are often far worse. Pragmatism
becomes the order of the day and I think that this is a pattern that is repeated in corporations.
Organisations function according to their perception of how they need to respond to the power
of the circumstances around them. There is a behavioural bottom line for organisations which
should not be crossed (ethical considerations embodied in the law) but, there is a vast array of
other ethical issues that may or may not be taken on board. They are generally only taken on
board when it is perceived that the short term self interest of the company matches the ethical
value.
Organisations then present different images to their stakeholders to maximise the warm glow
that they project.
Profit to the shareholders.
Respect me vibes to the institutions.
We work for our workforce vibes to employees and their supporters.
All these images conflict and one of the key roles of leadership (setting the agenda) is to ensure
that this conflict is managed and the business machine does not slow down.
Those leaders who have gone through the processes of:
1. Learning to lead and manage themselves.
2. Developing a clear understanding their values and goals.
3. Learning to lead and motivate others.
4. Learning how to apply leadership strategically.
will manage without falling off the horse.
It is unlikely however, that they will lead on ethics even if their standpoint is ahead of their
company\'s minimal position.
They are more likely to gratefully respond to what the social consensus
seeks to make imperative..
What is Simmonds’ disease aka pituitary cachexia Describe the featu.pdf
What is Simmonds’ disease aka pituitary cachexia? Describe the features of the disease
Solution
Answer: Simmonds\' disease or pitutary cachexia is a disease caused by the destruction of the
anterior lobe of the pitutary gland due to any cause, like post partum necrosis of the pitutary
gland, trauma like bullet injuries or fractures at the base of the skull, morbidities like tuberculosis
or syphilis, tumors of the pitutary and supra cellar cysts are some of the main caises of
Simmonds\' disease.
Features are:
1. as post-partum necrosis is one of the major causes of simonds\' disease, it is most common
betweeb ages of 20- 45 years. it is more common in women than men.
2. earliest manifestation of the disease are evident soon after few days from puerperium.
3. Failure of lactation or rather engorgement of the breasts is noticed.
4. Patients are of average nutrition and have a pale, dry, rather sallow skin suggesting a degree
of anemia more severe than what the hematological examinations reveal with a possible
subthyroid condition.
5. Progeria is unusual
6. Head hair is normal in size and texture.
7. eyebrows are thin.
8. disturbance in menstruation with amennorhia or scanty and irregular periods.
9. Loss of libido
10. atrophy of genetelia.
11. bear a striking resemblance to myxoedema. skin of face and arms is dry and scaly with a faint
yellow colouration.
12. senstivity to cold is pronounced.
13. well marked erythema ab igne of legs is pronounced..
14. adrenal lesions lead to loss of pubic and axillary hair.
15. Keplers\' Test for adrenal dysfunction is positive.
Treatment: Horone replacement therapy is the only available management so far..
6. All plants produce __________ by mitosis and __________ by meiosi.pdf
6. All plants produce __________ by mitosis and __________ by meiosis. A)spores, gametes
B)gametes, gametes C)gametes, spores D)spores, spores E)spores, gametes and spores 7. In a
heterosporous life cycle, the microspore develops into the _____ gametophyte, while the
megaspore develops into the ______ gametophyte. A)female, male B)male, female C)diploid,
haploid D)haploid, diploid E)None of the above 8. Asexual reproduction in liverworts is
accomplished by A)gametophytes. B)spores. C)gemmae. D)tracheids. 9. You are walking along
a roadside and find a plant with the following characteristics: very thin waxy cuticle, stomata,
simple leaves in whorls around a central stem, independent sporophyte and gametophyte,
sporangia in strobili. This plant is most likely a member of which of the following phyla?
A)Bryophyta B)Sphenophyta C)Pterophyta D)Lycophyta 10. Plants differ from algae in that only
plants A)are photosynthetic. B)are multicellular. C)possess chlorophyll. D)have multicellular
embryos protected by the parent. E)are eukaryotic. 11. Which statement about the alternation of
generations in plants is not true? A) The plant life cycle is characterized by diploid and haploid
forms. B)Meiosis occurs in sporangia. C)Gametes are always produced by meiosis. D)The
zygote is the first cell of the sporophyte generation. E)The gametophyte and sporophyte differ
genetically. 12. The most abundant gymnosperm phylum today is A) Cycadophyta. B)
Ginkgophyta. C) Gnetophyta. D) Coniferophyta. E) None of the above 13. Coniferous
gymnosperms, such as pines, depend primarily on __________ for pollination; thus, the plants
produce large quantities of pollen that disperse over large areas during the spring. A) insects B)
birds C) water D) wind E) mammals 14. An evolutionary trend that runs throughout the plant
kingdom is that the sporophyte generation ___ and is more independent of the gametophyte, and
the gametophyte generation _____ and is more dependent upon the sporophyte. A) becomes
smaller, becomes smaller B) becomes larger, becomes smaller C) becomes smaller, becomes
larger D) becomes larger, becomes larger E) does not change in size, becomes larger 15.
Angiosperms differ from other plants in that two male gametes, contained within a single male
gametophyte, participate in fertilization events. One sperm nucleus combines with the egg to
produce a diploid zygote. The other sperm nucleus combines with two other haploid nuclei of the
female gametophyte. This process is called A) biparental inheritance. B) multiple paternity. C)
double fertilization. D) biparental fertilization. E) multiple fertilization. 16. The reproductive
organ of angiosperms is the A)sporangium. B) flower. C) cone. D) archegonium. E) sporophyte.
17. The prominent components of Earth\'s modern land flora in most areas are A) angiosperms.
B) gymnosperms. C) ferns. D) bryophytes. E) club mosses. 18. Flowers with insect pollination
have showy A) petals. B) sepals. C) anthers. D) fruits 19. In a.
What is the pH of a solution that is formed at 25C by combining 300 .pdf
What is the pH of a solution that is formed at 25C by combining 300 mL of 0.040 M NaOH with
400 mL of 0.030 M HCl?
Solution
The amount of OH- ions released by NaOH is 0.04*300.
The amount of H+ ions released by HCl is 0.03*400
So the amount of H+ by HCl and amount of OH- by NaOH cancel each other.
This inturn makes the water neutral and the
pH remains 7.
pH = 7.
ulsalullailut Ul glucose linked to muctose. Similarly, link ing three.pdf
ulsalullailut Ul glucose linked to muctose. Similarly, link ing three or more monosaccharides
forms a polysaccharide such as starch, glycogen, or cellulose (fig. 6.3). Question 1 Examine
figure 6.2. hich groups of a glucose molecule are involved in forming a polysaccharide? Shade
the groups with a pencil.
Solution
In the structiure of glucose, the OH groups are present on 1, 2, 3, and 4th position of the ring and
at 5th position CH2OH is present. When a glucose molecule involves in the formation of
polysaccharide, the OH group at 1st position of a aglucose molecule interacts with the OH group
at 4th position of another glucose molecule..
This is a photograph of an organelle found in living cells. Use it to.pdf
This is a photograph of an organelle found in living cells. Use it to help answer questions 1, 2
and 3. (From Essential Cell Biology, Alberts Betal (2009) 3rd edition; Garland Science, NY &
London. Photo by Daniel SFriend.) 1) What is the name of this organelle? D. O Chloroplast
Endoplasmic Mitochondrion Ribosome reticulum 2 What is the function of this organelle? c, O
D. O Anaerobic Aerobic Protein Photosynthesis respiration respiration release 3 Which one of
the following substances is produced when this organelle is functioning Oxygen Carbon Glucose
Starch dioxide
Solution
1: C Mitochondria; The given image shows mitochondria as the inner membrane is shown like
finger like projections which is characteristic feature of mitochondria.
2: B Aerobic respiration; Mitochondria are the double membrane bound organelles which serve
as site for aerobic respiration. The Kreb cycle and electron transport chain take place in it.
3: B Carbon dixoide; CO2 is the product of Kreb cycle. Glucose enters the glycoysis and forms
pyruvic acid which in turn enters the Kreb cycle in form of Acetyl CoA and is decarboxylated..
This Way to the Gas Ladies and Gentlemen Provide scholarlyacade.pdf
\"This Way to the Gas Ladies and Gentlemen\" Provide scholarly/academic journal articles
related to this reading and some short information about each article
Solution
This Way for the Gas, Ladies and Gentlemen, also known as Ladies and Gentlemen, to the Gas
Chamber, is a collection of short stories by Tadeusz Borowski, which were inspired by the
author\'s concentration camp experience. The original title in the Polish language was
PoZegnanie z MariA (Farewell to Maria). Following two year imprisonment at Auschwitz,
Borowski had been liberated from the Dachau concentration camp in the spring of 1945, and
went on to write his collection in the following years in Stalinist Poland. The book, translated in
1959, was featured in the Penguin\'s series \"Writers from the Other Europe\" from the 1970s..
The steps in the electron transport chain in anaerobic respiring bac.pdf
The steps in the electron transport chain in anaerobic respiring bacteria, and the fermentation
pathway in fermenting bacteria both: Produce ATP. Produce Ethanol. Produce NADH.
Generate a proton gradient. Regenerate NAD^+.
Solution
Answer: Produce ATP
Anaerobic respiration is a process without oxygen and uses a respiratory electron transport chain
but does not use oxygen as the electron acceptors and generates only two molecules of ATP. It
also produces ethanol or lactic acid
Fermentation (alcholic and lactic acid fermentation) occurs in bacteria that convert sugars into
acids, alcohol, or gases. In the presence of O2, NADH and Pyruvate are used to generate the
ATP.
The September Club is a social club. To be a member one must have be.pdf
The September Club is a social club. To be a member one must have been born in September. (i)
If the September Club has exactly 30 members, what is the probability that at least two of its
members have the same birthday (disregarding the year of birth)? (ii) If the September Club has
exactly 10 members, what is the probability that at least two of its members have the same
birthday (disregarding the year of birth)?
Solution
1. 29^30 / 30^30
2. 9^30 / 10^30.
Sequence the following events that led to our understanding of DNA in.pdf
Sequence the following events that led to our understanding of DNA in chronological order.
The human genome was sequenced. X-ray diffraction revealed the 3D shape of DNA. A
harmless bacterial strain found to cause disease after receiving DNA (not protein) from another
bacterial strain. A model of DNA was created showing how its subunits form is double-helical
shape. Viruses labeled with radioactive phosphorous injected their DNA into bacteria.
Solution
A harmless bacterial strain found to causedisease after recieving DNA (not protien) from another
bacterial strain -...................... experiment by Avery, McCarty, and MacLeod: Identifying the
transforming principle (1944)
Viruses labelled with radioactive phosphorus injected their DNA into bacteria..........(Hershey-
Chase experiments 1952)
A model of DNA was created showing how its subunits form its double helical shape ..........
(Watson & Francis crick, 7 march, 1953)
X-ray diffraction revealed the 3D shape of DNA.......(Rosalind Franklin April 1953, acta
crystallographica)
Human genome was sequenced ......(April 2003).
Sallys brother is color-blinded. Her husband is normal. What is the.pdf
Sally\'s brother is color-blinded. Her husband is normal. What is the chance for her son to be
color-blinded?
Solution
Answer:one in two (50%) chance
Color blindness is X linked recessive inheritance.
two copies of a disease allele on the X chromosome are required for an individual with two X
chromosomes (a female) to be affected with an X-linked recessive disease.
Affected males transmit the disease allele to all of their daughters, who are then carriers, but to
none of their sons. Therefore Sally’s brother must have got the disease X chromosome from her
mom.
Sally must be carrier.
For a carrier female, with each pregnancy there is a one in two (50%) chance her sons will
inherit the disease allele..
Rushenberg Corporations operating leverage is 10.8. If the company.pdf
Rushenberg Corporation\'s operating leverage is 10.8. If the company\'s sales increase by 14%,
its net operating income should increase by about:
Multiple Choice 10.8%, 77.1% ,14.0%, 151.2%
Solution
operating leverage=% change in net operating income/% change in sales
Hence net operating income should increase by=(10.8*14%)
which is equal to
=151.2%.
problem 2 1. Give an example of a function f Q N that is surjective..pdf
problem 2 1. Give an example of a function f Q N that is surjective. (Note: Q 12la, b E z, b 0) 2.
Let X e such that there exists a surjective function f X Z. Prove that X is infinite. 3. Let P
represent the set of all polynomials with integer coefficients. Prove that P is countable. 4. Let I
0,1] and J 0.21 losed intervals of the real line). Show that III J lJl.
Solution
A surjective function is called a surjection.
Example: f(x)=x
(2). If X is a countable set, then we refer to an onto function f : N X as an enumeration of X, and
write X = {xn : n N}, where xn = f(n).
(3).
P(n) = {n is an element of the integers| axn + bxn-1 + ... where a,b... are integers.}
P(1) = {ax1}. There is one element in this set therefore this set is countable.
Assume P(k) is true, i.e.
P(k) = {k is an element of the integers| axk + bxk-1 + ... where a,b... are integers.} is a countable
set.
Show P(K+1) is true i.e. that
P(k+1) = {k+1 is an element of the integers| ax(k+1) + bxk + cx(k-1) ... where a,b,c... are
integers.} is a countable set.
By our assumptpn we are trying to show that {k+1 is an element of integers | ax(k+1) + a
countable set) is a countable set.
(4)
Two sets I, J have equal cardinality, written I J , if there is a one-to-one, onto map f : I J
A surjective function is called a surjection.
Example:f(x)=x
(2). If X is a countable set, then we refer to an onto function f : N X as an enumeration of X, and
write X = {xn : n N}, where xn = f(n).
(3).
P(n) = {n is an element of the integers| ax^n + bx^n-1 + ... where a,b... are integers.}
P(1) = {ax^1}. There is one element in this set therefore this set is countable.
Assume P(k) is true, i.e.
P(k) = {k is an element of the integers| ax^k + bx^k-1 + ... where a,b... are integers.} is a
countable set.
Show P(K+1) is true i.e. that
P(k+1) = {k+1 is an element of the integers| ax^(k+1) + bx^k + cx^(k-1) ... where a,b,c... are
integers.} is a countable set.
By our assumptpn we are trying to show that {k+1 is an element of integers | ax^(k+1) + a
countable set) is a countable set.
(4)
Two sets I, J have equal cardinality, written I J , if there is a one-to-one, onto map f : I J.
Placentation in mammals is initiated by Cytotrophoblasts Syncytiotr.pdf
Placentation in mammals is initiated by Cytotrophoblasts Syncytiotrophoblasts
Cytotrophoblasts closest to the ICM Syncyttiotrophoblasts closest to the ICM Cell migration
and specification is most closely related to FGF\'s WNT\'s TGF beta\'s Sonic Hedgehog Cilia
move Nodal vesicular parcles Right to left Left to right anterior to posterior medial to lateral
In mammals primary neurulation is responsible for All development within the cranial vault All
development within the cranial vault up to the cervical vertebrae All development within the
cranial vault up to the thorascic vertebrae Aur development within the cranial vault up to the
sacral vertebrae
Solution
Question 12: Cytotrophoblastic cells closest to the ICM ( the inner cell mass) initiate the
placentation in mammals..
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