Mitosis multiple choice

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wille2511
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Mitosis multiple choice

Post by wille2511 » Fri Nov 16, 2007 2:37 am

What causes the rhythmic change in cyclin concentration in the cell cycle?
a. an increase in production of a Cdk once the restriction point is passed
b. the cascade of increased production once the protein is phosphorylated by Cdk
c. the changing ratio of cytoplasm to genome
d. its destruction by an enzyme phosphorylated by the cyclin-Cdk complex
e. the binding of PDGF to receptors on the cell surface

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canalon
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Post by canalon » Fri Nov 16, 2007 2:41 am

What do you think? and why?

Then we will help.
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

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