Multiple Choice
Which of the following is a growth-based classification of tumors?
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11. Cell Division
Cancer
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Which of the following statements is typical for cancer cells?
A
They undergo normal apoptosis in response to DNA damage.
B
They exhibit uncontrolled cell division.
C
They require external growth signals to proliferate.
D
They maintain normal contact inhibition.
Verified step by step guidance1
Understand the characteristics of cancer cells: Cancer cells are known for their ability to divide uncontrollably, bypassing the normal regulatory mechanisms that govern cell division.
Review the concept of apoptosis: Apoptosis is a programmed cell death mechanism that eliminates damaged or unnecessary cells. Cancer cells often evade apoptosis, allowing them to survive despite DNA damage.
Examine the role of growth signals: Normal cells require external growth signals to divide. Cancer cells, however, can often proliferate without these signals, making them independent of normal growth control mechanisms.
Understand contact inhibition: Normal cells stop dividing when they come into contact with neighboring cells, a phenomenon known as contact inhibition. Cancer cells typically lose this property, allowing them to grow and form tumors.
Identify the correct statement: Based on the above characteristics, the statement 'They exhibit uncontrolled cell division' is typical for cancer cells, as it aligns with their hallmark behavior of bypassing normal regulatory controls.
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