Ch15NationalExamHelper - CH 15 Multiple Choice 2 Cells...

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CH 15 Multiple Choice 2. Cells receive which of the following signals? a. Light b. Sound c. Odorants d. Hormones e. All of the above Answer: e 3. Signals get to target cells in multicellular organisms via a. circulation and diffusion. b. conduction and diffusion. c. circulation and lymph. d. chaperon trafficking and transmembrane transport. e. cytoskeletal trafficking and perfusion. Answer: a 4. A signal pathway is a. the path a signal takes to find its target cell. b. a group of signals along a concentration gradient. c. the coordinates created from concentration gradients that tell cells where they are located in multicellular organisms. d. the series of events that occur in response to a signal’s being detected. e. a nerve propagation. Answer: d 8. In general, all cell signaling causes a. altered gene expression. b. an influx of ions. c. protein kinase activity. d. G protein activation. e. a change in receptor conformation. Answer: e 9. The major categories of signal receptors are a. inside and outside. b. enzyme and ion channel. c. transmembrane and cytoplasmic. d. protein kinase and cAMP. e. sensory and molecular. Answer: c
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10. Steroids bind a. to the outer face of transmembrane proteins. b. to cytoplasmic receptors. c. within the lipid bilayer. d. around the nuclear membrane. e. directly to DNA. Answer: b 11. Steroids typically affect a. gene transcription. b. ion channels. c. enzyme activity. d. biochemical pathways. e. aggression. Answer: a 12. Typically, large polar signals interact directly with a. cytoplasmic receptors. b. transmembrane receptors.
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This note was uploaded on 09/22/2009 for the course BIO 10087 taught by Professor Mossman during the Spring '09 term at ASU.

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Ch15NationalExamHelper - CH 15 Multiple Choice 2 Cells...

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