Answer:
when G1/S cyclin-CDK is activated. Expression of G1/S cyclins is regulated by E2F proteins
Explanation:
I've found this on Google
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.
The cell stays in the interphase stage the longest. The interphase stage includes the G1 phase which is the initial growth of the cell. Next is the S phase and in simple terms it’s just the replication of the DNA. Next is the G2 phase which is the continued phase of cell growth. After interphase is completed, the cell enters prophase, then metaphase, then anaphase, then telophase, and finally cytokinesis.
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A decomposer breaks down and gains nutrients from dead organisms
