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← Human Body & HealthIf a mutation disables the EGFR receptor's ability to internalize after growth factor binding in lung cancer cells, which consequence follows?
A)Enhanced downstream signaling attenuation
B)Increased apoptotic protein production rates
C)Accelerated cell cycle checkpoint activation
D)Sustained, unchecked cell proliferation✓
💡 Explanation
Disabling EGFR internalization prevents receptor downregulation, leading to sustained signaling. Because the growth signal persists unchecked due to impaired receptor-mediated endocytosis, therefore uncontrolled cell proliferation occurs, rather than attenuation of the signal or activation of apoptotic pathways.
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