The respiratory control center consists of
A) the alveoli.
B) a cluster of nerve cells in the medulla.
C) a cluster of nerve cells in the lungs.
D) the anterior portion of the pituitary gland.
E) a group of highly modified cells located in the hypothalamus.
B
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You are assembling a model of a chromosome, but begin having some trouble when you get to the step of forming chromatin loops. If you are unable to resolve this problem, what step of chromosome structure would you be unable to achieve?
A. Histone/DNA complex B. Nucleosome C. Solenoid D. Rosettes Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you know about chromosome structure? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Skin color in humans is a(n) ____________________ trait
Fill in the blank(s) with correct word
In dosage compensation, females have the same amount of X-linked gene products as males. This is
brought about by A. the loss of one X chromosome from all somatic cells in females. B. the accelerated production by genes on the Y chromosome. C. the lowered rate of synthesis by genes on the X chromosome. D. the inactivation of one X chromosome in all somatic cells of females. E. none of these.
This nucleotide is found in RNA but not in DNA: ________
Fill in the blank(s) with correct word