CELL DIVISION
CELL DIVISION AND CANCEROUS CELLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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few dividing cells with organized arrangement
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many dividing cells with disorganized arrangement
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normal shape
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normal functions
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Detailed explanation-1: -Cancer cells often secrete enzymes that allow it to invade neighboring tissues. Cancerous tissue is disorganized and appears abnormal.
Detailed explanation-2: -Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues. Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.
Detailed explanation-3: -Mitosis occurs infinitely. The cells never die in cancer, as cancer cells can utilize telomerase to add many telomeric sections to the ends of DNA during DNA replication, allowing the cells to live much longer than other somatic cells. [3] With this mechanism, cancer cells that usually die simply continue to divide.
Detailed explanation-4: -Mutated genes don’t work properly because the instructions in their DNA get mixed up. This can cause cells that should be resting to divide and grow out of control, which can lead to cancer.