In some cases, just a few hormone molecules binding to the surface of a cell can trigger a very large response because ____.
A. the signal is amplified by activation of transcription factors that each catalyze multiple reactions
B. each hormone can bind to multiple receptors simultaneously causing amplification of the signal
C. the signal is amplified by activation of enzymes that each catalyze multiple reactions
D. each hormone can bind to transcription factors simultaneously causing amplification of the signal
E. the hormone triggers the cell to release more hormones, amplifying the signal
C. the signal is amplified by activation of enzymes that each catalyze multiple reactions
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The formula for glucose is C6H12O6. What is the formula for a polymer made by linking ten glucose molecules together by dehydration synthesis?
A. C60H111O51 B. C60H120O60 C. C60H100O50 D. C60H102O51 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 dehydration synthesis? 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?
T cells multiply and become specialized in the
a. bone marrow. b. spleen. c. thymus. d. thyroid. e. tonsils.
Peaceful uses of nuclear power may eventually be limited by:
A) the risk of criminal or terrorist activities, including theft of fissionable material. B) the risk of catastrophic accidents, such as the events in Chernobyl, Ukraine, in 1986. C) the problem of finding a continued source of nuclear fuels. D) the problem of disposing of nuclear wastes.
Movement of molecules from an area of high to low concentration with the help of membrane proteins is:
A. simple diffusion B. signal transduction C. facilitated diffusion D. group translocation