Question

what is quiscent stage ?​

Answer 1

Answer:

Quiescence is a temporary cell cycle state where populations of cells rest and do not replicate, before they are activated and re-enter the cell cycle.

Explanation:

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Answer 2

Explanation:

The cell cycle is highly organised and divided into four phases (G1, S, G2 and M). Checkpoints are used to ensure that the important events of each stage are carried out before a cell can move onto the next phase. For example, for a cell to pass from G1 to S phase, it must bypass the G1 checkpoint. Once past this point, they are committed to replicating. Alternatively, at this point, cells can exit the cell cycle into a phase called Gap 0 (G0) phase.

Cells within the G0 phase are non-replicating and can either be there temporarily (quiescence) or permanently due to aging or deterioration (senescence). This state is very important in the maintenance of viable populations of stem cells. Each cell has a limited number of replications that it can undergo, called the Hayflick limit. Therefore, if all cells continually re-enter the cycle straight after replicating, the number of stem cells and the lifespan of the organism would be reduced.