Question

Sometimes the cell may exit the division phase and enter ______ to become a non-dividing cell?

1) G0 phase
2) G1 phase
3) S phase
4) G2 phase

Answer 1

The cell may exit the division phase and enter the G0 phase to become non-dividing. The G0 phase is a quiescent state where a cell is not preparing for division, and it can be either temporary or permanent.

Step-by-step explanation:

Sometimes a cell may exit the division phase and enter the G0 phase to become a non-dividing cell. The G1, S, and G2 phases represent different stages within interphase, during which a cell prepares for division. The G0 phase is a distinct phase where the cell is in a quiescent (inactive) state. This can happen temporarily due to environmental conditions, or the cell can remain in G0 permanently, especially if it's a cell type that rarely divides, such as mature cardiac muscle cells or nerve cells.

Non-dividing cells in a multicellular organism typically enter the G0 phase from the G1 phase. These cells might enter G0 phase due to various reasons, including cellular senescence or differentiation. When in the G0 phase, cells are not actively preparing to divide and have exited the cell cycle. However, they can re-enter the cell cycle under certain conditions, like the presence of growth factors, and move on to the G1 phase in preparation for subsequent cell division phases.