NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Cells that can no longer divide are in:
A
S phase
B
Go phase
C
Metaphse
D
G1 phase
Explanation: 

Detailed explanation-1: -The phase in which cell fail to divide further (do not enter S-phase after G1-phase) and undergo differentiation is known as G0 phase or quiescent stage. It occurs due to non-availability of mitogen and energy rich compounds.

Detailed explanation-2: -Stem cells, for example, can exit their quiescent G0 phase. Stem cells are unspecialized cells that have the potential to give rise to any type of cell in the human body. They can divide and create more stem cells, or they can become specialized cells such as muscle cells.

Detailed explanation-3: -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-4: -G0 phase. While some cells are constantly dividing, others are quiescent. These cells exit G1 and enter a resting state called G0. In G0, a cell is performing its function without actively preparing to divide.

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