What happens inside a normal cell when a stimulatory growth factor binds to its receptor of the cell membrane?
A) A transcription factor turns on a proto-oncogene,which activates the cell cycle.
B) A transcription factor turns on a tumor suppressor gene,which inactivates the cell cycle.
C) A transcription factor turns on mechanisms that causes a mutation in tumor suppressor gene.
D) A transcription factor turns on a proto-oncogene,which inactivates the cell cycle.
E) A transcription factor turns on a tumor suppressor gene,which activates the cell cyclE.
Correct Answer:
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