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Question

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35b. During mitosis, microtubules undergo rapid dynamic instability unless their plus ends are
captured by kinetochores. Based on what you know about dynamic instability, which of the
following are possible ways a kinetochore could stabilize a microtubule? Select all that apply.
A) Kinetochores activate the ARP2/3 complex.
B) Kinetochores phosphorylate GDP on the plus end of the microtubules
C) Kinetochores inactivate the ARP2/3 complex.
D) Kinetochores stabilize the GTP cap of the microtubule.
E) Kinetochores promote the activity of the gamma tubulin ring complex.

True or False. You should be able to justify your answer.
36. True/False DNA replication occurs gradually throughout interphase.

Explanation / Answer

35b. During mitosis, microtubules undergo rapid dynamic instability unless their plus ends are
captured by kinetochores. Based on what you know about dynamic instability, which of the
following are possible ways a kinetochore could stabilize a microtubule? Select all that apply.
A) Kinetochores activate the ARP2/3 complex.
B) Kinetochores phosphorylate GDP on the plus end of the microtubules
C) Kinetochores inactivate the ARP2/3 complex.
D) Kinetochores stabilize the GTP cap of the microtubule.
E) Kinetochores promote the activity of the gamma tubulin ring complex.

Kinetochores stabilize the GTP cap of the microtubule.------microtubule plu end

36. True DNA replication occurs gradually throughout interphase

DNA replication occurs gradually throughout S phase of interphase

occurs gradually due unwinding of strands of DNA ,

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