Which of the followings are key characteristics for monotremes (Mul.pdf
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Which of the followings are key characteristics for monotremes? (Multiple Answer) Holes in the palate Adults have no teeth They lay eggs Small epipubic bone Solution The key characteristics for monotremes are adults have no teeth and they lay eggs. Monotremes refers to the single hole that is cloaca, they are the basal mammals that lays eggs. Some of the examples for the monotremes are the platypus and species of echidna. They are warm blooded animals and produce milk through mammary glands to feed their younger ones. Monotremes lack teeth in adults, and we can observe form of molar teeth in younger ones. The jaws are constructed differently from from other other mammals and the opening of the jaw muscle is different. Monotremes lays eggs. The egg is provided with nutrients and retains within the mother and hatches soon after the birth within the span of 10 days. Monotremes do not have nipples but they are lactate and they excrete the milk from mammary glands through openings in their skin. By this we can observe the parental care. All the species of monotremes are long lived and they have low rates of reproduction..
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2. Early embryos of the african clawed frog, sea urchin embryo, early zebrafish embryo, mouse
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• . The inner and the outer enamel epithelium, the cells begin to separate due to the deposition of intercellular mucoid fluid rich in glycogen that forms a branch reticular arrangement called the stellate reticulum.
• . The ectomesenchyme surrounding the dental papilla and the enamel organ condenses and becomes more fibrous, it is called the dental follicle or the dental sac—the precursor of the cementum, the periodontal ligament (PDL), and the alveolar bone.
• . BELL STAGE (CERVICAL LOOP)
• . The junction of the outer and the inner enamel epithelium at the rim of the enamel organ becomes a distinct zone called the cervical loop.
• . The buds of the permanent molars, which have no primary predecessors.
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• . Stratum intermedium → Enamel
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• . large-diameter collagen fibers known as von Korff fibers are deposited at right angles to the basement membrane in the extracellular matrix of the acellular zone. This process creates the organic matrixof the first-formed dentin or mantle dentin.
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Human blood cells, early embryous of the african clawed frog, sea ur.pdf
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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
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Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
1 Development of teeth.pptx
A Brief Description about the development of teeth. Understanding the process of tooth development is of particular importance for the dentist; as developmental disturbances may occur at any stage of this process resulting in different types of tooth anomalies.
Tooth development can be classified either based on morphology or histology
Morphological stages:
Bud stage
Cap stage
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* Early
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Initiation
Proliferation
Histodifferentiation
Morphodifferentiation
Apposition
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Observation
Cite and Example
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Reference
1. Wolpert,L., Tickle, C., & Arias, A,M. (2015).Principles of development. Oxford: Oxford
university press.
2. Jiang, P., Ludwig, M. Z., Kreitman, M. and Reinitz, J. (2015). Natural variation of the
expression pattern of the segmentation gene even-skipped in melanogaster. Dev Biol [Epub
ahead of print]. PubMed ID: 26129990.
Explain the difference between an assumption and a constraint.So.pdf
Explain the difference between an assumption and a constraint.
Solution
Assumptions are factors that for planning use are measured to be true real or certain without
proof or demonstration Constraints are distinct as the state, quality, or sense of being that will
affect the presentation of the project or a procedure There are a lot of layers of semantic
challenge between the user practice and architecture Ideally semantic interoperability is stranded
in your enterprise architecture apart from of the stage of sophistication of your activity
architecture Semantic interoperatibility is a problem of degree some of layer are interoperatable
at the activity stage and others may be at a local stage Some layer may be universal beyond the
activity and others are by description partial to the enterprise.
Each group should plot on graph paper the ½ life of the radioisotope.pdf
Each group should plot on graph paper the ½ life of the radioisotopes using the special graph
paper supplied by the teacher. The y-axis has a log scale and begins at 100% of the parent
radioisotope present; the next point is 100/ 2, or 50% parent radioisotope present; the next point
is 50/2, or 25%; and so on.). For example, if the ratio of C-14 to C-13 is 1:3 than the fossil is
how old? 5600 +5600. Correct? For each of the radioisotopes listed above, make a radiometric
graph going to 3 half-lives. Be sure to make one graph using uranium-lead and potassium-argon
dating to one half life. This will become useful later. Why?
Uranium-Lead dating method
Very careful measurements in laboratories, made on VERY LARGE numbers of U-235 atoms,
have shown that each of the atoms has a 50:50 chance of decaying during about 704,000,000
years. In other words, during 704 million years, half the U-235 atoms that existed at the
beginning of that time will decay to Pb-207. This is known as the half life of U- 235. Many
elements have some isotopes that are unstable, essentially because they have too many neutrons
to be balanced by the number of protons in the nucleus. Each of these unstable isotopes has its
own characteristic half life. Some half lives are several billion years long, and others are as short
as a ten-thousandth of a second.
The uranium-lead radiometric dating scheme has been refined to the point that the error margin
in dates of rocks can be as low as less than two million years in two-and-a-half billion years. An
error margin of 2–5% has been achieved on younger Mesozoic rocks.
One of its great advantages is that any sample provides two clocks, one based on uranium-235\'s
decay to lead-207 with a half-life of about 700 million years, and one based on uranium-238\'s
decay to lead-206 with a half-life of about 4.5 billion years, providing a built-in crosscheck that
allows accurate determination of the age of the sample even if some of the lead has been lost.
Potassium-argon dating method
This involves electron capture or positron decay of potassium-40 to argon-40. Potassium-40 has
a half-life of 1.3 billion years, and so this method is applicable to the oldest rocks. Radioactive
potassium-40 is common in micas, feldspars, and hornblendes, though the closure temperature is
fairly low in these materials, about 125°C (mica) to 450°C (hornblende).
#1-23 meters deep from top of hill (limestone)
#2-18 meters deep from top of hill (limestone/volcanic ash)
#3-34 meters deep from base of hill (sandstone)
#4-39 meters deep from top of hill (sandstone)
#5- 50 meters deep from bottom of hill (slate)
#6-26 meters deep (limestone)
#7-10 meters into hill (basalt)
#8-50 meters deep from base of hill (pegmatite)
#9- 3 meters deep into hill (erosion surface of limestone)
#10-52 meters deep from top of hill (pegmatite)
#11- on bank of stream (in shale)
#12- from base of hill 63 meters deep (in granite)
#13-47 meters deep from base of hill (pegmatite)
#14- 2 meters de.
Dr. Liu did a genetic screen for yeast cells that fail to synthesize .pdf
Dr. Liu did a genetic screen for yeast cells that fail to synthesize leucine (ie. leu^-). She first
exposed the yeast cells to X-ray and then she plated the cells on to a plate containing complete
medium. Then she replicated (using replicate plating technique) the colonies from the complete
medium onto two new plates (plate A and B). Indicate medium type in A and B plate and how
will she find the colony that is Leu- by comparing the colonies on A and B plates?
Solution
Replica plating technique identifies the nutritional auxotrophs by growing the microbes on
complete and minimal media. The complete media contain all the nutrients required for growth
and development of microbe uder study. The minimal media contain all but one nutrient for
which the microbe is supposed to be auxotroph. In the given question, Dr grows the colonies on
plate A (containing complete media) and plate B (containing media that lack leucine). The
auxotrophs which fail to synthesize leucine can grow on the plate A having complete media only.
The colonies of these auxotrophs are absent on the plate B with minimal media which does not
supplement the requirement of leucine by the auxotrophs. This is how, she can find out the Leu-
colonies on the plate A..
Children with Down Syndrome generally show a pattern of retarded men.pdf
Children with Down Syndrome generally show a pattern of retarded mental development,
although some achieve higher intellectual levels than others. The intellectual achievements of
Down Syndrome children have been studied by numerous investigations, and several different
types of chromosomal abnormalities associated with the syndrome have been identified. Two
such abnormalities are called trisomy 21 and mosaicism. The levels of intellectual functioning of
trisomy 21 and Mosaic Down Syndrome were compared in the paper
Solution
H0: mu1 = mu2
Ha: mu1 >mu2
Right tailed test at 0.05
The T-value is 3.546415. The P-Value is 0.00039. The result is significant at p < 0.05..
Choose the statement that describes the first stage of phagocytosis .pdf
Choose the statement that describes the first stage of phagocytosis Phagocytes form
pseudopodia at the site of inflammation in order to grab the invading microbe Phagocytes move
with deliberation along a gradient of stimulatory products at the site of injury Phagocytes make
their way to an inflammatory site by random chance Phagocytes release substances to attack the
extracellular microbe
Solution
Answer b: Phagocytes move with delibration along a gradient of stimulatory products at the site
of injury
Reason: Chemotaxis is the movement of phagocytes toward an increasing concentration of some
attractant such as bacterial factors (bacterial proteins, capsules, LPS, peptidoglycan, teichoic
acids, etc.), complement proteins (C5a), chemokines (chemotactic cytokines such as interleukin-
8 secreted by various cells), fibrin split products, kinins, and phospholipids released by injured
host cells..
Are logarithms prolems used for career jobsSolutionLogarithmi.pdf
Are logarithms prolems used for career jobs?
Solution
Logarithmic (and exponential) functions are widely used in describing economic and physical
phenomenon such as compound interest, population growth, memory retention, decay of
radioactive materials. Instances are: a logarithmic function can be sued to relate the weight of an
animal and its lowest galloping speed. Sensation of sound in human ear is logarithmic to its
loudness. Scales to measure sound (decibel) is therefore, logarithmic. So is the scale used to
measure the magnitude of earthquakes, i.e. the Richter scale.
There are many careers that use exponential and logarithmic functions. Examples of such careers
include: astronomer, psychologist , archaeologist, forensic scientist, seismologist etc..
All based on Zybooks = AP Java with zylabsPlease answer all questi.pdf
All based on Zybooks = AP Java with zylabs
Please answer all questions - no explanation of answers needed
QUESTION 1
char[][] table = new char[10][5];
How many rows are in the array seen in the accompanying figure?
0
5
10
15
QUESTION 2
The standard output object in Java is ____.
output
System.out
Sys.out
System.in
QUESTION 3
The length of the string \"first java program\" is:
16
18
19
20
1 points
QUESTION 4
The loop condition of a while loop is reevaluated before every iteration of the loop.
True
False
1 points
QUESTION 5
If str1 is “Hello” and str2 is “Hi”, which of the following could not be a result of
str1.compareTo(str2);?
-9
-5
-1
1
1 points
QUESTION 6
Both System.out.println and System.out.print can be used to output a string on the standard
output device.
True
False
1 points
QUESTION 7
In a method call statement, when passing an array as an actual parameter, you use only its name.
True
False
1 points
QUESTION 8
Which of the following is true about a while loop?
The body of the loop is executed at least once.
The logical expression controlling the loop is evaluated before the loop is entered and after the
loop exists.
The body of the loop may not execute at all.
It is a post-test loop
1 points
QUESTION 9
int x, y;
if (x < 4)
y = 2;
else if (x > 4)
{
if (x > 7)
y = 4;
else
y = 6;
}
else
y = 8;
Based on the code above, what is the value of y if x = 9?
2
4
6
8
1 points
QUESTION 10
The array index can be any nonnegative integer less than the array size.
True
False
1 points
QUESTION 11
When a program executes, the first statement to execute is always the first statement in the main
method.
True
False
1 points
QUESTION 12
Java stores two-dimensional arrays in a row order form in computer memory.
True
False
1 points
QUESTION 13
The statement dataType[][][] arrayName; would declare a two-dimensional array.
True
False
1 points
QUESTION 14
All the methods defined in a class must have different names.
True
False
1 points
QUESTION 15
Which of the following is NOT a reserved word in Java?
double
throws
static
num
1 points
QUESTION 16
Given the declaration
int[] list = new int[50];
the statement
System.out.println(list[0] + \"...\" + list[49]);
outputs all 50 components of the array list.
True
False
1 points
QUESTION 17
In the case of an infinite while loop, the while expression (that is, the loop condition) is always
true.
True
False
1 points
QUESTION 18
Consider the following program.
public class CircleArea
{
static Scanner console = new Scanner(System.in);
static final double PI = 3.14;
public static void main(String[]args)
{
doubler;
double area;
r = console.nextDouble();
area = PI * r * r;
System.out.println(\"Area = \" + area);
}
}
To successfully compile this program, which of the following import statement is required?
import java.io.Scanner;
import java.util.Scanner;
import java.lang.Scanner;
No import statement is required
1 points
QUESTION 19
An identifier can be any sequence of characters and integers.
True
False
1 points
QUESTION 20
A .
a) The following is a list of terms to do with how digital informati.pdf
a) The following is a list of terms to do with how digital information is communicated between
parts of a PLC and with external items such as programming panels and computers. Write a brief
description of each and outline the advantages and disadvantages of each.
i. Twisted pair.
ii. Coaxial cable.
iii. Fibre optics
Solution.
5. What is the difference between mutually exclusive alternatives and.pdf
5. What is the difference between mutually exclusive alternatives and independent projects? (10
points)
Solution
An Independent Project is a project whose cash flows are not affected by the accept/reject
decision for other projects. Thus, all Independent Projects which meet the Capital Budgeting
critierion should be accepted. Mutually Exclusive Projects are a set of projects from which at
most one will be accepted..
“Our solar system is a molecule on a snowflake on the tip of the ice.pdf
“Our solar system is a molecule on a snowflake on the tip of the iceberg that is the rest of the
universe.”
Is this correct? Demonstrate how you determined this.
Solution
Yeh this is correct
Star-forming clouds like this one are dynamic and evolving structures. Since the stars trace the
straight line pattern of spokes of a wheel, scientists believe that these are newborn stars, or
\"protostars.\" At a mere 100,000 years old, these infant structures have yet to \"crawl\" away
from their location of birth. Over time, the natural drifting motions of each star will break this
order, and the snowflake design will be no more..
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