CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -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-2: -Overall, the cell cycle has many regulatory steps that are crucial to maintaining homeostasis inside of the cells during the replication of DNA and the division of cells. Mutation inside specific genes can lead to the loss of balance inside the cells, thus resulting in cancer growth.
Detailed explanation-3: -If a person has an error in a DNA repair gene, mistakes remain uncorrected. Then, the mistakes become mutations. These mutations may eventually lead to cancer, particularly mutations in tumor suppressor genes or oncogenes. Mutations in DNA repair genes may be inherited or acquired.
Detailed explanation-4: -Failures of cell cycle control may be caused by inherited genetic abnormalities (genetic predispositions) that compromise the function of certain cell cycle “stop” and “go” signals.