Final answer:
Cell growth occurs during the G1 phase of the cell cycle, followed by a decision at the G1 checkpoint to proceed to DNA replication or enter a resting state.
Explanation:
Cell growth occurs during the G1 phase of the cell cycle. This phase is where the cell undergoes rapid growth, performs its normal activities, and prepares for DNA replication in the S phase.
If a cell is not to divide, it will enter a resting phase at the end of G1 and will not continue to the S phase. The decision for the cell to proceed into DNA replication or enter a resting state is made at the G1 checkpoint.
During G1, the cell synthesizes proteins and enzymes needed for replication, indicating its growth phase in preparation for cell division.
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