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Questions and Answers
Which protein is responsible for stopping cell division?
Which protein is responsible for stopping cell division?
- Rb (correct)
- p53
- Cdc25
- Cyclin
During which phase does Cdc6 activate DNA helicases to start replication?
During which phase does Cdc6 activate DNA helicases to start replication?
- M phase
- G2
- G1
- S phase (correct)
What is the role of p21 in the cell cycle?
What is the role of p21 in the cell cycle?
- Activates G1-Cdk and S-Cdk
- Inhibits Rb phosphorylation
- Binds to G1/S-Cdk and S-Cdk to stop the cell cycle (correct)
- Induces apoptosis
Which complex tags M and S cyclins with ubiquitin for degradation?
Which complex tags M and S cyclins with ubiquitin for degradation?
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What occurs if DNA damage cannot be repaired?
What occurs if DNA damage cannot be repaired?
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Which protein is responsible for removing inhibitory proteins to activate cell division?
Which protein is responsible for removing inhibitory proteins to activate cell division?
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