Final answer:
If a cell does not receive social signals such as growth factors, it is unlikely to pass the G2 checkpoint, activate DNA repair mechanisms, or pass the G₁ checkpoint.
Step-by-step explanation:
If a cell does not receive social signals, such as growth factors from nearby cells, it is unlikely to pass the G2 checkpoint. The G2 checkpoint is a cell cycle checkpoint where the cell checks for DNA damage and ensures that all of the DNA has been replicated correctly before proceeding to the next phase. Without the proper signals and conditions, the cell may delay progression or even undergo apoptosis.
On the other hand, DNA repair mechanisms are activated when cells detect DNA damage. These mechanisms help to maintain the integrity of the DNA and prevent the accumulation of harmful mutations. If a cell does not receive social signals, it may not be able to activate the necessary DNA repair mechanisms.
The G₁ checkpoint is another important cell cycle checkpoint where the cell assesses its readiness to divide. It checks for various signals, including the availability of growth factors from nearby cells. If a cell does not receive these signals, it may not pass the G₁ checkpoint and will not proceed to the next phase of the cell cycle.
Learn more about Cell Cycle and Signaling