Q41 Which statement below about DNA is FALSE DNA is prese.pdf
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Q4.1. Which statement below about DNA is FALSE? DNA is present in and essential for all living cells. DNA is located in the nucleus of eukaryotic cells. DNA is not always perfectly copied during DNA replication. All DNA molecules in human cells are circular. Q4.2. In the diagram below showing halves of four DNA replication bubbles, RNA primers are shown as red and DNA is shown as black. Which bubble's 5 and 3 ' labels are correct? Q4.3. What would be the consequence if a cell were unable to replicate its DNA? The cell would not be able to undergo cell division as it normally would. The cell would be unable to make proteins based on the information in DNA. The cell would not form a nucleus, because the nucleus contains DNA. The cell would become a cancer cell, dividing in an uncontrolled manner..
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This document provides a biology lesson on DNA and RNA structure and function. It contains sections on DNA structure, including its double helix shape. It also describes how messenger RNA (mRNA) acts as an intermediary to deliver DNA instructions to sites of protein production. Students are instructed to complete 20 multiple choice questions and color illustrations of DNA and RNA molecules according to a key.
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DNA replication is the process by which a cell makes an identical copy of its DNA when it divides. It occurs in S phase of the cell cycle and is essential for accurate transmission of genetic information from parent to daughter cells. There are three main steps: 1) unwinding and separating the DNA double helix, 2) adding complementary nucleotides to each strand to form two new double helices, and 3) completing replication to produce two identical DNA molecules, each with one original and one new strand. Replication differs between prokaryotes and eukaryotes in that prokaryotes replicate from a single origin of replication, while eukaryotes replicate from many origins simultaneously to complete replication more quickly.
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1. The nucleus contains DNA which contains genetic information that is transmitted to determine traits. DNA is composed of genes made up of sequences of bases (A, T, C, G) that code for particular proteins.
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Mitosis and Meiosis. In mitosis, each cell resulting from one divison has exactly the same DNA
as the orginal cell that divided, but in meiosis, there are two divisions, and the four cellls which
result have only half the number of chromosomes as the orignai cell. QUESTION 7 What are
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2.) How are the site(s) where replication begin(s) is/are characterized as in both prokaryotes and
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3.) Arrange the following proteins in the proper order in which they participate in DNA
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2 = Helicase
3 = Single-strand binding proteins
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4.) When does DNA replicate in the cell cycle of eukaryotes and prokaryotes?
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3) DNA replication copies genetic information by unwinding the double helix and synthesizing new complementary strands according to base pairing rules, ensuring each daughter cell inherits the full genome. It occurs at replication forks in prok
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The document discusses DNA structure and DNA fingerprinting. It explains that DNA is made up of nucleotides containing deoxyribose, phosphate and nitrogenous bases that pair together through hydrogen bonds. DNA fingerprinting can be used to identify individuals by their unique DNA sequence, except for identical twins, and has applications in paternity testing, criminal investigations and identifying genetic disorders. Mapping genography similarly traces human migration patterns through analysis of genetic variations passed down over generations.
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phase. The mitochondrial phase. None of these. QUESTION 2 Which is NOT a difference
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ribose. DNA has monomers made of nucleotides, but RNA has monomers made of ATP. DNA
uses the base thymine, while RNA uses uracil. None of these. QUESTION 3 What is
complementary base pairing in the DNA molecule or when RNA interacts with DNA? C always
pairs with G , and T always pairs with A (or U in RNA). DNA always binds to RNA, and RNA
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QUESTION 6 What are the two types of cell division, and how are they different? Chromatin
and prohase, chromatin covers the DNA, and in prophase it disappears. Anaphase and Telophase,
in anaphase the chromosomes pull apart, and in telophase, the nucleus re-forms. The cell cycle
and cell death, in the cell cycle, the cell lives and grows, and at the end of it, there is cell death.
Mitosis and Meiosis. In mitosis, each cell resulting from one divison has exactly the same DNA
as the orginal cell that divided, but in meiosis, there are two divisions, and the four cellls which
result have only half the number of chromosomes as the orignai cell. QUESTION 7 What are
stem cells? Cells which belong to the stalk of a plant, between the roots and the leaves. Cells that
are not found in animals. Cells which are capable of changing (differentiating) into more than
one other cell type. None of these. QUESTION 8 What are the four major types of tissues?
Brain, Heart, Lung, Stomach Epithelial, Connective, Nervous, Muscle Skin, Hair, Blood, Saliva
None of these. Which is a NOT a characteristic of epithelial tissue? It conducts electrical
impulses. It is avascular. it forms glands. All of these are characteristics of epithelial tissue.
QUESTION 10 Unlike in epithelial tissue, in connective tissue: The cells don't have a nucleus.
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This document discusses several key aspects of DNA structure and function:
1) Chromosomes contain DNA, histone proteins, and some RNA. DNA contains a code made up of four nucleotide bases that determines the sequence of amino acids in proteins.
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1.) What does “exonuclease” activity mean? Which enzyme important for DNA polymerization
has both 5’ – 3’ AND 3’ – 5’ exonuclease activity? Which is important for proofreading
function?
2.) How are the site(s) where replication begin(s) is/are characterized as in both prokaryotes and
eukaryotes? What is beneficial about this? Are the sites the same in prokaryotes and eukaryotes?
3.) Arrange the following proteins in the proper order in which they participate in DNA
replication.
1 = Primase
2 = Helicase
3 = Single-strand binding proteins
4 = DNA polymerase I
5 =DNA polymerase III
4.) When does DNA replicate in the cell cycle of eukaryotes and prokaryotes?
5.) Why are Okazaki fragments only found on the lagging strand, but not on the leading strand of
DNA?
6.) What protein transports the histones of Nucleosomes into the nucleus?
7.) Describe the differences between Topoisomerase I and Topoisomerase II.
8.) During DNA replication, ___________ adds an RNA primer to naked template strands of
DNA. Why is this necessary during replication? What fills the gap after removal of this RNA
primer?
9.) What is the problem with the ends of linear eukaryotic chromosomes? How does telomerase
help the issue?
Solution
1. Exonuclease activity means that enzymes work by cleaving nucleotides one at a time from the
end (exo) of a polynucleotide chain. A hydrolyzing reaction breaks phosphodiester bonds at
either the 3’ or the 5’ ends.
DNA polymerase I is the enzyme important for DNA polymerization and has both 5’ – 3’ and 3’
– 5’ exonuclease activity, which is used in editing and proofreading DNA for errors. The 3\' to 5\'
can remove only one mononucleotide at a time, whereas the 5\' to 3\' activity can remove up to
10 nucleotides at a time.
2. Sites from which the process of replication starts are different in prokaryotes and Eukaryotes.
Prokaryotes have only one origin of replication per DNA molecule, whereas in ekaryotes, there
are multiple sites for origin of replication.
To initiate DNA replication in Eukaryotes, multiple replicative proteins assemble on and
dissociate from these replicative origins. DNA double helix is unwound and an initial priming
event by DNA polymerase occurs on the leading strand.To initiate the process of DNA
replication, multiple replicative proteins assemble on and dissociate from these replicative
origins. The individual factors work together to direct the formation of the pre-replication
complex (pre-RC), a key intermediate in the replication initiation process.
In case of prokaryotes, Helicase separates the DNA to form a replication fork at the origin of
replication where DNA replication begins. Replication forks extend bi-directionally as
replication continues. The initiation of DNA replication is mediated by DnaA, a protein that
binds to a region of the origin known as the DnaA box. E. coli, has 4 DnaA boxes, each of which
contains a highly conserved 9 bp consensus sequence 5\' - TTATCCACA - 3\'.
3. Enzymes that participate in DNa.
DNA and RNA: The Comparison of DNA and RNA.
DNA contains the instructions for cells and is made up of four bases: adenine, thymine, cytosine and guanine. DNA replicates through a process of unwinding and using the original strands to make new molecules. Mutations are changes in the DNA sequence that can occur when mistakes are made during replication, sometimes leading to conditions like cancer. Factors that cause mutations to occur more often include replication errors and environmental exposures.
What is DNA Replication? 5 Steps and 4 Functions | The Lifesciences Magazine
What is DNA Replication? 5 Steps and 4 Functions | The Lifesciences MagazineThe Lifesciences Magazine
The 5 Steps of DNA Replication: 1. Initiation 2. Priming 3. Elongation 4. Termination 5. ProofreadingBiotechnology Chapter Four Lecture- DNA
This document provides an introduction to studying DNA. It describes the structure and function of DNA, including the double helix structure formed by base pairing between nucleotides. It also differentiates between prokaryotic and eukaryotic DNA structure and regulation. Key aspects covered include DNA replication, bacterial culture techniques, plasmid vectors, operon regulation in prokaryotes, and gene expression in eukaryotes. The learning outcomes focus on understanding DNA structure and function, differences between prokaryotic and eukaryotic systems, viral applications in genetic engineering, and gel electrophoresis techniques.
Dna Cloning
DNA evidence, also known as DNA profiling, revolutionized the criminal justice system when it was first introduced in 1986. DNA profiling allows analysis of genetic patterns in DNA that are unique to each individual, which can then be stored in databases. While DNA evidence provides powerful tools for law enforcement, there are also ethical concerns around privacy violations and potential for discrimination. The accuracy and reliability of DNA evidence depends on careful collection and analysis of samples to avoid contamination or errors. Overall, DNA evidence has had widespread impacts on criminal investigations and exonerations of innocent individuals.
Eukaryotic dna polymerase pptx
Eukaryotic DNA polymerases are essential enzymes for DNA replication and repair. There are five main DNA polymerases in eukaryotes - alpha, beta, gamma, delta, and epsilon. DNA polymerase works at a very fast pace, adding 2000 nucleotide bases per second in prokaryotes and 1000 bases per second in eukaryotes. It requires a primer sequence of 20 nucleotides to initiate replication and can only elongate DNA in the 5' to 3' direction by adding nucleotides. DNA polymerase plays a critical role in maintaining the integrity of the genome through DNA replication and repair.
B10vrv4123
DNA replication is the process where a cell makes an identical copy of its DNA before cell division. It ensures each new cell has the full DNA content. The double helix structure of DNA allows each strand to serve as a template for copying its complementary strand. In replication, enzymes separate the DNA strands and DNA polymerase enzyme adds complementary nucleotides to each strand to copy it. Replication differs between single-celled prokaryotes, which replicate from one starting point, and multicellular eukaryotes, which replicate from multiple starting points along each chromosome.
CVA Biology I - B10vrv4123
DNA replication is the process where a cell makes an identical copy of its DNA before cell division. It ensures each new cell has the full DNA content. The double helix structure of DNA allows each strand to serve as a template for copying its complementary strand. In replication, enzymes separate the DNA strands and DNA polymerase enzyme adds complementary nucleotides to each strand to copy it. Replication differs between single-celled prokaryotes, which replicate from one starting point, and eukaryotes, which replicate from multiple starting points along each chromosome.
"Unraveling the Essentials of Life: An In-Depth Exploration of DNA Replicatio...
Before a cell divides, it must first copy its DNA through a process called replication. During replication, the double-stranded DNA molecule unwinds and separates, with each strand serving as a template to produce a new complementary strand. Enzymes such as DNA polymerase join nucleotides to the new strands according to base-pairing rules. This results in two identical DNA molecules, each with one original and one new strand. Replication differs between prokaryotes, which replicate from a single origin point, and eukaryotes, which replicate from multiple origin points along each DNA molecule.
DNA replication .pptx
DNA replication is the process by which DNA copies itself in order to pass genetic information to daughter cells. It occurs through a semi-conservative process whereby the double helix unwinds and each strand acts as a template for new partner strands. DNA polymerase adds nucleotides to extend the new strands from primers in the 5' to 3' direction. On the leading strand synthesis is continuous but on the lagging strand it occurs discontinuously in fragments called Okazaki fragments that are later joined by DNA ligase. Telomerase adds repetitive sequences to the ends of lagging strands during replication to compensate for nucleotide losses and prevent shortening of chromosomes.
DNA-RNA-PPT 01.pptx
DNA and RNA are the building blocks of life that work together to direct protein synthesis. DNA stores and replicates genetic information, while various types of RNA help read and translate DNA instructions. The document defines DNA and RNA, describing their structures, functions, and how they work cooperatively through processes like transcription, translation, and semi-conservative replication to create proteins. Key differences between DNA and RNA include their single vs. double-stranded nature and the presence of thymine in DNA and uracil in RNA.
Similar to Q41 Which statement below about DNA is FALSE DNA is prese.pdf (20)
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1.) What does “exonuclease” activity mean Which enzyme important fo.pdf
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What is DNA Replication? 5 Steps and 4 Functions | The Lifesciences Magazine
What is DNA Replication? 5 Steps and 4 Functions | The Lifesciences Magazine
"Unraveling the Essentials of Life: An In-Depth Exploration of DNA Replicatio...
"Unraveling the Essentials of Life: An In-Depth Exploration of DNA Replicatio...
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Question 1 Globalization (Ch 1)
What does Globalization mean to you? Why is it important? What
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Question 2 The Emergence of Global Institutions (Ch 1)
Why have global institutions been created? Are they necessary?
Please select two from this list and describe their role, their
significance, and their major initiatives?
Select list of Global Institutions:.
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Jane, who also has Mendelio disease, at a support group for the disease. They fall in love and
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B. What is the most likely mode of inheritance for Mendelio disease? Explain. C. What is the most
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Qu enfoque de los peligros para la salud es el ms costoso?
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C. vacunas
d. programas para prevenir la diabetes
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a. tratar enfermedades
b. aumento de la investigacin del cncer
C. vacunas
d. programas para prevenir la diabetes.
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Question Using the information from the scenario below ou.pdf
Question
Using the information from the scenario below, outline your health assessment findings of Casey.
Your response should include the patient history (including history of the presenting problem) and
patient physical assessment (include observations and if they are abnormal).
Scenario Information
Casey Skinner is an indigenous 20-year-old woman. She is the daughter of Michael and Mary, and
has 2 other siblings, aged 22 and 18. Casey has a large, close extended family, many of whom
are living with or near her in her small rural town in New England. She currently lives with her
mother, and siblings, along with her 2 year old nephew, and grandfather. Her father is living with
his new partner in another town. Casey works part-time at a child care centre with an enrolment of
37 children. She has worked the last 3 days, now has 2 days off. It has been a busy week, with 5
children off sick with a gastro bug, and 6 children sent home. The outbreak is significant enough to
make the local newspaper.
Casey wakes at 0600 with stomach pains and slight nausea, she tries to go back to sleep but
can't. She decides to get up and have some toast for breakfast and a cup of tea. 30 minutes later
Casey started vomiting and has diarrhoea. By now she has vomited six times and had four small
episodes of diarrhoea. She calls in sick for work, and goes to bed. She is feeling increasingly
lethargic and isn't tolerating any food. She has only had small sips of fluid (water total 1000mls) so
her mum suggested she go to the hospital and get checked out. Casey presents to the Emergency
department where she is meet by the triage nurse.
At Triage in ED: Casey is alert and orientated, she reports feeling dizzy and lethargic with
abdominal cramping noted. She is still vomiting, and reports one emesis in the last hour which was
less than 100 mls and 'it was streaked with green' and diarrhoea once in the last 2 hours, minimal
amount, 'extremely watery'.
Casey reports that she has been unable to eat any solid food and is only managing to sip water.
She has a water bottle with her which can take 1000 mls, her mum filled it up this morning (0630)
and the nurse notes it is half full. The nurse asks Casey about her urine and Casey states she 'has
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queja principal Mi hija ha tenido mucha fiebre y ahora tie.pdf
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que respuesta es correcta pls 1 Dirk es el repartidor de P.pdf
que respuesta es correcta pls
1) Dirk es el repartidor de Papa Pepperoni's Pizza. En una entrega vio a Marvin, su principal
competidor por el afecto de su novia Jolene. Aceler su camioneta y golpe a Marvin, rompindole
ambas piernas. En estas circunstancias, esto es
Opcin multiple
un agravio negligente.
un agravio intencional.
incumplimiento
un crimen pero no un agravio.
2) En cul de las siguientes situaciones se aplicara probablemente res ipsa loquitur ?
Opcin multiple
Iggy est corriendo en la calle con su camin y maneja 50 millas por hora en una zona 25
Starla se col detrs de China y le dio una patada en la espalda.
Un par de tijeras quirrgicas quedaron dentro de Boris despus de la ciruga, pero no puede probar
exactamente cmo llegaron all.
Barry era el propietario de Quick-E-Market y tena los pisos de linleo limpiados y encerados
profesionalmente, pero no coloc carteles ni advirti a los clientes sobre la superficie resbaladiza.
3) Garp firm un contrato con Tech Corp que tena una clusula de arbitraje vinculante. Surgi una
disputa entre Garp y Tech Corp y el asunto fue escuchado por un rbitro. El rbitro otorg a Tech
Corp $50,000. Bajo cul de las siguientes circunstancias puede un juez anular el laudo del rbitro en
la audiencia?
Opcin multiple
El rbitro se neg a escuchar pruebas relevantes que perjudicaran los derechos de Garp.
El rbitro fue parcial en contra de Garp porque es un hombre.
Tanto la negativa de un rbitro a escuchar evidencia relevante que perjudique los derechos de una
de las partes como la parcialidad contra el gnero son motivos para anular el laudo de un rbitro.
Bajo ninguna circunstancia, porque Garp celebr el contrato voluntariamente y el Congreso ha
dictaminado que se prefiere el arbitraje al litigio como mtodo de resolucin de disputas, y los
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Qu bonos tendrn el cupn ms alto, todo lo dems igual?
Deuda garantizada frente a una obligacin
Obligaciones subordinadas frente a deuda senior
Un bono con un fondo de amortizacin frente a uno sin
Un bono exigible frente a un bono no exigible
Alguien puede explicar los tipos de bonos enumerados?.
Qu rasgo diferencia a los pueblos baka efe y sua de la ma.pdf
Qu rasgo diferencia a los pueblos baka, efe y sua de la mayora de los dems humanos?
a. color de ojos de color morado oscuro en la edad adulta
b. capacidad de digerir la celulosa vegetal
C. resistencia a la malaria debido al deslizamiento de glbulos rojos
d. relativamente corto
Cmo difieren las tasas de crecimiento a lo largo de la vida dentro de los pueblos Baka, Efe y
Sua?
Baka tiene una tasa de crecimiento prenatal
lenta, Sua tiene una tasa de crecimiento lenta
a.
desde el nacimiento hasta los 2 aos y Efe deja
de crecer al comienzo de la pubertad.
Baka y Efe tienen una tasa de crecimiento
prenatal lenta, mientras que Sua tiene una tasa
b.
de crecimiento lenta desde el nacimiento hasta
los 2 aos.
Las cras de Baka tienen una tasa de
crecimiento lenta desde el nacimiento hasta los
C.
2 aos, mientras que las cras de Efe y Sua
tienen una tasa de crecimiento prenatal lenta.
Baka y Sua dejan de crecer al inicio de la
pubertad, mientras que Efe tiene una tasa de
d.
crecimiento lenta desde la concepcin hasta los
2 aos..
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entre un elemento promotor proximal y un potenciador distal? Cules son las similitudes?
Comparar/contrastar mecanismos de expresin de genes bacterianos y eucariticos Nombre cuatro
clases principales de protenas de unin al ADN que son responsables de controlar la transcripcin y
describa sus caractersticas estructurales. Qu tienen en comn la caja TATA, los iniciadores y las
islas CpG? Describir la funcin y estructura del CTD (dominio carboxi terminal) de la ARN
polimerasa II Qu es un realceosoma? Describir el papel de la desacetilacin e hiperacetilacin de
histonas en el control transcripcional de la levadura. Describir los trminos secuencias de ADN que
actan en cis y protenas que actan en trans Cmo encontrar enfermedades genticas relacionadas
con una regulacin gnica anormal?.
Qu significa el trmino Requires a Crowd en trminos de .pdf
Qu significa el trmino 'Requires a Crowd' en trminos de su referencia al concepto de 'Glocal'?
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B.) Por lo general, se requiere una multitud diversa y global conectada a travs de lo digital para
que una estrategia Glocal tenga xito.
C.) Una multitud tradicional no es necesaria para una estrategia Glocal.
Re. Ninguna de las anteriores..
Qu procesos tienen lugar en el ncleo de una clula Adem.pdf
El resumen describe los procesos que ocurren en el núcleo de una célula, incluyendo la polimerización del ADN, la razón lógica por la cual las cadenas de ADN se construyen agregando nucleótidos al extremo 3' en lugar del 5', y las razones para hacer una copia de ARN de un gen, como la transcripción.
Qu mecanismo NO utilizan las clulas epiteliales para evit.pdf
Qu mecanismo NO utilizan las clulas epiteliales para evitar la invasin de los tejidos de barrera?
A)
Secrecin de pptidos antimicrobianos
B)
Fagocitosis de microbios
C)
Produccin de capa de moco.
D)
Uso de batir cilios
MI)
Todas las respuestas son correctas..
Qu ocurre con la estructura de una macromolcula que deter.pdf
Qu ocurre con la estructura de una macromolcula que determina la solubilidad en agua?
Puedes identificar si una molcula es un lpido, una protena, un carbohidrato o un nucletido
dada su estructura molecular?
Puedes identificar si una molcula es un lpido, una protena, un carbohidrato o un nucletido
segn los resultados de la prueba de la bolsa marrn, la prueba de Biuret, la prueba del
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This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
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