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Question 2 Cells that are in a nondividing state are in which phase? A. G1 B. GO OC. S D. G2 OE. M
Question 3 Which of the following is true concerning cancer cells? OA. They do not exhibit density-dependent inhibition when growing in culture. OB. When they stop dividing, they do so at random points in the cell cycle. 20 OC. They are not subject to cell cycle controls. OD. B and C only OE. A, B, and C
Question 4 What causes the decrease in the amount of cyclin at a specific point in the cell cycle? OA. an increase in production once the restriction point is passed OB. the cascade of increased production once its protein is phosphorylated by Cdk OC. the changing ratio of cytoplasm to genome OD. its destruction by a process called ubiquitylation 0.5 point OE. the binding of growth factor to receptors on the cell surface
Question 5 Protein kinases are enzymes that catalyze: A. addition of phosphate group in a molecule. B. removal of a phosphate group from a molecule. OC. addition of a glucose OD. addition of sulfates. OE. synthesis of DNA.
Question 6 What is the name of protein that is involved in degradation of cyclin? OA. ATPases B. kinases OC. Ubiquitin D.chromatin O E. protein kinases
Question 7 A. Growth factor The following has receptors for the substance on their plasma membranes to produce signals for growth. B. MPF OC. DNA OD. cyclin 0.5 points OE. Cdk Save Answa
Question 8 A protein synthesized at specific times during the cell cycle that associates with a kinase to form a catalytically active complex OA. Growth factor OB. MPF OC. DNA OD. cyclin 0.5 points Save Answer OE. Cdk