Answer:
B. The amount of unbound cyclin E is lowest as the cell enters S.
Explanation:
The reproduction of the cell is a cycle that it regulates by itself, depending the demand of a certain cell.
In the case of the mitosis, in Each change from G1 to S to G2 to M is regulated by some proteins like the cyclin.
In the case of the cdK2 is ncessary to pass the control point to pass from the stage G1 to the stage S.
Another characteristic of the cyclins, is that these proteins are synthetized and degraded constantly during the hole process.
Hope this is a useful info
The correct answer should be True!
Cell membrane is like doors and windows!!
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