The secretion of TSH by the anterior pituitary gland stimulates the thymus to secrete thymosin.
a. true
b. false
Answer: b. false
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You label cells with a radioactive isotope of sulfur (35S). The only molecules that would be radioactively labeled in these cells are:
A. Proteins B. Carbohydrates C. Nucleic acids D. Lipids 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 the composition of different monomers? 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?
What first happens to a neuron as an impulse passes
along it is best described as a. polarization. b. depolarization. c. ionization. d. hyperpolarization. e. transpolarization.
When were the oldest stromatolites formed?
a. about 2.1 billion years ago b. about 3.5 billion years ago c. about 3.9 billion years ago d. about 4.2 billion years ago
People with high blood pressure often take medication to lower blood pressure. Some of these medications might do this by:
A) relaxing the smooth muscles in the arteries. B) opening the valves in the veins. C) increasing the blood volume. D) increasing the number of platelets in the blood.