Answer:
1
Explanation:
Chemical changes causes a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
Answer:
the plasma membrane is the control center of the cell
Answer:
when G1/S cyclin-CDK is activated. Expression of G1/S cyclins is regulated by E2F proteins
Explanation:
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Commitment to cell division occurs at Start when G1/S cyclin-CDK is activated. Expression of G1/S cyclins is regulated by E2F proteins in conjunction with pRB proteins.. Mitogens stimulated cell division by increasing the amount of G1 cyclins.
