PSL_Quiz_1_Sept11 - A cyclic AMP B Inositol trisphosphate C...

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Points Awarded 5 Points Missed 0 Percentage 100% 1. A second messenger A. is a membrane receptor protein B. is a cytoplasmic chemical C. is under homeostatic control so its concentration is constant D. an extracellular signal molecule E. is a transport pathway across the plasma membrane Points Earned: 1/1 Correct Answer: B Your Response: B 2. Receptors that are themselves enzymes are usually (but not always) A. G-protein coupled receptors B. activated by binding to lipid-soluble messengers C. activated by binding a second messenger D. tyrosine kinases E. found as soluble protein molecules in the cytoplasm Points Earned: 1/1 Correct Answer: D Your Response: D 3. Which of the following is NOT regarded as a second messenger?
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Unformatted text preview: A. cyclic AMP B. Inositol trisphosphate C. diacylglycerol D. calcium ions E. JAK kinases Points Earned: 1/1 Correct Answer: E Your Response: E 4. An agonist is A. a ligand that activates a receptor. B. an inhibitor of a signaling pathway. C. a second messenger. D. a receptor for a hormone. E. a protein kinase. Points Earned: 1/1 Correct Answer: A Your Response: A 5. Phospholipase C A. is a protein kinase. B. hydrolyzes ATP. C. has a membrane lipid as its substrate. D. is a ligand-gated ion channel. E. is a transcription factor. Points Earned: 1/1 Correct Answer: C Your Response: C...
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This note was uploaded on 12/03/2009 for the course PSL 431 taught by Professor Stephenson during the Spring '07 term at Michigan State University.

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PSL_Quiz_1_Sept11 - A cyclic AMP B Inositol trisphosphate C...

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