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Q1. Two main cell groups make up the nervous system- neurons and connective tissue cells such as astrocytes and schwann cells. Which are "nervous" cells? Why? What are the major functions of the other cell group?
Q2. The human gametes have about 3 billion bp of DNA in their chromosomes.
a. state the size of the diploid genome in kb (kilo bases; 1kb = 1000bp)
b. If the entire DNA was in relaxed B-DNA form, what would be the average length of a chromosome expressed in cm?
c. On average, how many complete turns would be in each chromosome?
d. If there are around 30-40,000 genes in a human gamete, how numerous genes are there in an average chromosome?
What heart sounds occurs at the beginning of systole and disastole and what valves create the sounds? Describe, in both, the ventricular pressure change, direction of the blood flow, and valve opening/closings.
White blood cells, leukocytes normally reside in the blood. However, they end up in tissues and organs when there's infection or damage to fight foreign bodies-antigens. At times they're activated from a false trigger.
Why do schools require inoculations for childhood diseases such as mumps, measles, and whooping cough? Why are the inoculations of value.
What are the levels of marine zones? Where is the aphotic zone? Pelagic zone?
In a particular squash plant, white fruit is dominant to yellow fruit.A white fruited plant is crossed to a yellow fruited plant.Whe the seeds from this cross are planted.
When collecting samples from a sulfur spring in Russia, you discover an organism with a single circular chromosome and lacking a nuclear membrane. What sort of organism are you certain that your organism CANNOT be?
What is the function of sigma factor?
What is left-sided and right-sided heart failure? Which of these symptoms reflect left-sided heart failure and which reflect right-sided heart failure? Why with reasons.
In Biochemistry lab, we isolated the enzyme acid phosphatase from wheat germ, then tested for its velocity. One of the study questions asked "How much acid phophatase is present in 1g of wheat germ?" I am not sure how to go about answering this qu..
Explain the epidemiological attributes of this episode. In which special circumstances can cross-sectional surveys be utilized to test the hypotheses? In your answer explain briefly the characteristics of the cross-sectional study.
Explain: (a) why we use scientific names written in Latin (and sometimes Greek) and (b) the importance of binomial nomenclature in naming organisms. Give examples of three scientific names (in correct binomial format) of common organisms.
Given an amount of sunlight that hits the plants on our planet, and ability of plants for rapid growth and reproduction, how come we are not all hip deep in dead plants.
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