CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It requires carbon dioxide
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Eukaryotes do it
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It is only for epidermal cells
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It is how the body produces sperm
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It is controlled by checkpoints
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Detailed explanation-1: -Cell cycle checkpoints are surveillance mechanisms that monitor the order, integrity, and fidelity of the major events of the cell cycle. These include growth to the appropriate cell size, the replication and integrity of the chromosomes, and their accurate segregation at mitosis.
Detailed explanation-2: -Cell-cycle checkpoints prevent the transmission of genetic errors to daughter cells. There exist three major cell-cycle checkpoints; the G1/S checkpoint, the G2/M checkpoint, and the spindle assembly checkpoint (SAC).
Detailed explanation-3: -In the cell cycle, there are three major checkpoints-the G1 checkpoint, the G2 checkpoint, and the spindle checkpoint.
Detailed explanation-4: -The G 1start subscript, 1, end subscript checkpoint is the main decision point for a cell – that is, the primary point at which it must choose whether or not to divide. Once the cell passes the G 1start subscript, 1, end subscript checkpoint and enters S phase, it becomes irreversibly committed to division.