Cell Cycle Control and Mitosis Quiz
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Questions and Answers

Which protein is responsible for stopping cell division?

  • Rb (correct)
  • p53
  • Cdc25
  • Cyclin

    • 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?

  • 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?

    <p>APC</p> Signup and view all the answers

    What occurs if DNA damage cannot be repaired?

    <p>Apoptosis</p> Signup and view all the answers

    Which protein is responsible for removing inhibitory proteins to activate cell division?

    <p>Cdc25</p> Signup and view all the answers

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