NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells in G0 phase are ____
A
Preparing to divide
B
Replicating DNA
C
Growing in size
D
Dividing
E
In dormancy
Explanation: 

Detailed explanation-1: -The cells that do not divide further, exit the cell cycle in G1 phase and enter into a quiescent (a period of dormancy or inactivity) stage called G0 phase. Cells in the G0 stage remain metabolically active but no longer divide.

Detailed explanation-2: -Cells in G0 phase are not actively preparing to divide. The cell is in a quiescent (inactive) stage that occurs when cells exit the cell cycle. Some cells enter G0 temporarily until an external signal triggers the onset of G1.

Detailed explanation-3: -2.3 Quiescent state of satellite cells In the absence of muscle cell injury, the satellite cells remain dormant and rest in the G0 phase of the cell cycle, which is the quiescent state.

Detailed explanation-4: -In the G0 phase, there is no cell division. It is the resting phase of the cell cycle. Cells in the G0 phase exit the cell cycle and re-enter after receiving signals.

Detailed explanation-5: -Short answer: Cells in reversible G0 are largely tissue stem cells and cells that cannot divide due to contact inhibition or lack of nutrients. Irreversible G0 cells are terminally differentiated and include neurons, striated muscle (including skeletal and cardiac muscle), and osteocytes (bone tissue).

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