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AS Quiz15 2007-2 CH385

AS Quiz15 2007-2 CH385 - a M b G c S d G 2 6(4 pts Apotosis...

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CH385 Introduction to Cell Biology Name _________________________ Quiz #15 (30 points) AY 2007-2 MULTIPLE CHOICE: 1. (4 pts) Which of the following are activated by a receptor that crosses the membrane seven times? a. G proteins b. Tyrosine kinases c. Serine kinases d. JAK tyrosine kinases 2. (4 pts) How do tyrosine kinases pass on their signal? a. They activate H proteins. b. They form active dimmers. c. They phosphorylate G proteins. d. They release lipids to the nucleus. 3. (4 pts) Which enzyme releases a water soluble secondary signal molecule and a membrane bound secondary signal molecule? 4. (4 pts) Which of the following is the most important aspect of signal transduction? 5. (4 pts) Which of the stages of the cell cycle do many human nerve cells find themselves?
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Unformatted text preview: a. M b. G c. S d. G 2 6. (4 pts) Apotosis is controlled by these two groups of compounds. a. caspases and Bcl-2 family of proteins b. caspases and cyclins c. cyclins and Bcl-2 family of proteins d. cyclins and kinases CH385 Introduction to Cell Biology Name _________________________ Quiz #15 (30 points) AY 2007-2 7. (3 points) Where does Cdc6 bind to allow one round of DNA synthesis to occur? a. At the promoter sequence. b. At the operator sequence. c. At the origin of replication. d. At the Shine-Delgano sequence. 8. (3 points) An important aspect of apotosis is that the cells a. can rapidly divide. b. can explode and quickly release their contents. c. can differentate. d. shrink rather than pop. Extra credit (3 points) During which part of the cell cycle does DNA synthesis occur? S phase...
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