Cell Cycle Questions Online Test 5 10:54:00 PM Posted by AEI Online Tutor No Comments Cell Cycle Questions Online Test 5 1. What causes the decrease in the amount of cyclin at a specific point in the cell cycle? an increase in production once the restriction point is passed the cascade of increased production once its protein is phosphorylated by Cdk the changing ratio of cytoplasm to genome its destruction by a process initiated by the activity of its complex with a cyclin Answer 2. Which of the following is released by platelets in the vicinity of an injury? PDGF MPF protein kinase cyclin Answer 3. Which is a general term for enzymes that activate or inactivate other proteins by phosphorylating them? PDGF MPF protein kinase cyclin Answer 4. Fibroblasts have receptors for this substance on their plasma membranes: PDGF MPF protein kinase cyclin Answer 5. Which of the following is a protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex? PDGF MPF protein kinase cyclin Answer 6. Which of the following is a protein maintained at constant levels throughout the cell cycle that requires cyclin to become catalytically active? MPF protein kinase cyclin Cdk Answer 7. Which of the following triggers the cellʹs passage past the G2 checkpoint into mitosis? PDGF MPF protein kinase cyclin Answer 8. This is the shortest part of the cell cycle: G1 S G2 M Answer 9. DNA is replicated at this time of the cell cycle: G0 G1 S G2 Answer 10. The ʺrestriction pointʺ occurs here: G0 G1 S G2 Answer Cell Cycle Questions Online Test => 1.. 2.. 3.. 4.. 5.. Share this AEI Online Tutor
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