CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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uncontrolled cell division
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the formation of sex cells
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meiotic cell division in body cells
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the rapid formation of spindles
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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: -The American Cancer Society defines cancer as “a group of diseases characterized by uncontrolled growth and spread of abnormal cells. If the spread is not controlled, it can result in death."
Detailed explanation-3: -Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.
Detailed explanation-4: -A cancer cell exhibits several abnormal properties like insensitivity to density dependent inhibition, insensitivity for contact inhibition, immortalization (cells can grow forever), invasiveness and metastasis, loss of anchorage dependence, angiogenesis, and failure to undergo apoptosis.
Detailed explanation-5: -Mutations in oncogenes and tumor suppressor genes allow cells to grow beyond normal body needs.