Which of the following does NOT affect the mutation rate of a gene?
A. The size of the gene.
B. The number of GC pairs versus AT pairs.
C. Whether the gene is on a maternal or paternal chromosome.
D. The number of trinucleotide sequences.
E. All of these affect the mutation rate of a gene.
C
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________ is a technique used to measure ion currents passing through individual channels along a nerve cell.
Fill in the blank(s) with the appropriate word(s).
Susie just squished a cockroach and its pale yellow hemolymph squirted out on the floor. If Susie analyzed the hemolymph, she would expect to find all of the following EXCEPT
A. sugars. B. water. C. ions. D. erythrocytes. E. amino acids. F. cells that protect against foreign microbes. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about hemolymph? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Select the best response to the question. ? A health care worker wearing gloves to prevent contact with a patient's blood ?will have an effect on which part of the chain of infection?
A) the source of infection B) transportation of the pathogen C) entry of the pathogen into the body D)it does not affect the chain of infection
What hormone is tested for in pregnancy tests?
A. progesterone hormone B. hCG hormone C. estrogen hormone D. follicle stimulation hormone E. luteinizing hormone