Which phase can a cell enter that indicates it has exited the cell cycle?

Which phase can a cell enter that indicates it has exited the cell cycle?

• A. G2
• B. Go
• C. S
• D. M

Answer: (B)

A cell that exits the cell cycle typically enters the Go phase, also known as the quiescent phase. In this state, the cell is metabolically active but not actively dividing. Cells in the Go phase have temporarily or permanently stopped progressing through the cell cycle in response to certain signals or environmental conditions, such as nutrient deprivation or lack of growth factors. This allows cells to conserve energy and resources or to differentiate into specialized cell types. In contrast, the other phases—G2, S, and M—are all part of the cell cycle where the cell is actively preparing to divide or undergoing division. G2 is the phase following DNA synthesis (S phase) where the cell checks for DNA damage and prepares for mitosis. The S phase is when DNA is replicated, and during the M phase, the cell undergoes mitosis to divide into two daughter cells. Thus, the Go phase is distinct as it signifies a departure from the active cycle of cell division, making it the correct answer to the question.

A cell that exits the cell cycle typically enters the Go phase, also known as the quiescent phase. In this state, the cell is metabolically active but not actively dividing. Cells in the Go phase have temporarily or permanently stopped progressing through the cell cycle in response to certain signals or environmental conditions, such as nutrient deprivation or lack of growth factors. This allows cells to conserve energy and resources or to differentiate into specialized cell types.

In contrast, the other phases—G2, S, and M—are all part of the cell cycle where the cell is actively preparing to divide or undergoing division. G2 is the phase following DNA synthesis (S phase) where the cell checks for DNA damage and prepares for mitosis. The S phase is when DNA is replicated, and during the M phase, the cell undergoes mitosis to divide into two daughter cells. Thus, the Go phase is distinct as it signifies a departure from the active cycle of cell division, making it the correct answer to the question.