Scelta multipla
Which of the following is a characteristic unique to cancer cells, but not normal cells?
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11. Cell Division
Cancer
Scelta multipla
Which of the following processes do normal proto-oncogenes typically exhibit?
A
They normally suppress tumor growth.
B
They enhance tumor growth.
C
They stimulate normal cell growth and division.
D
They are underexpressed in cancer cells.
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Understand the role of proto-oncogenes: Proto-oncogenes are genes that normally help cells grow. They are essential for normal cell growth and division.
Differentiate between proto-oncogenes and oncogenes: When proto-oncogenes mutate, they can become oncogenes, which may lead to uncontrolled cell growth and potentially cancer.
Recognize the normal function of proto-oncogenes: In their normal state, proto-oncogenes stimulate normal cell growth and division, ensuring that cells divide at the right time and in the right amount.
Clarify misconceptions: Proto-oncogenes do not suppress tumor growth; rather, they are involved in promoting normal cell growth. They are not typically underexpressed in cancer cells; instead, mutations can lead to overexpression or abnormal activity.
Connect to cancer biology: In cancer cells, proto-oncogenes can become oncogenes, leading to enhanced tumor growth due to the loss of regulation in cell division processes.
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