CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The cell cycle could become disrupted.
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The DNA will continue to regulate cell division.
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Mitosis will carry on at normal rates.
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All cells will enter and stay in S phase.
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Detailed explanation-1: -Cancer is the result of unchecked cell division caused by a breakdown of the mechanisms regulating the cell cycle. The loss of control begins with a change in the DNA sequence of a gene that codes for one of the regulatory molecules.
Detailed explanation-2: -Disruption of normal regulation of the cell cycle can lead to diseases such as cancer. When the cell cycle proceeds without control, cells can divide without order and accumulate genetic errors that can lead to a cancerous tumor .
Detailed explanation-3: -Cell cycle checkpoints are critical to prevent the cell from progressing to the next phase of the cell cycle before the prior phase has been completed. Premature entry into the next phase of the cell cycle can result in catastrophic consequences for the cell and cell death.
Detailed explanation-4: -Overexpression of growth factors or a lack of suppressor proteins can lead to rapid uncontrolled cell division. As cells proliferate without regulation, tumors occur that can become deadly if not treated. Mitosis occurs infinitely.