The Retinoblastoma (Rb) protein blocks cells from entering the cell cycle by ______.
(a) phosphorylating Cdk.
(b) marking cyclins for destruction by proteolysis.
(c) inhibiting cyclin transcription.
(d) activating apoptosis.
Answer:
The Retinoblastoma (Rb) protein blocks cells from entering the cell cycle by ______.
(a) phosphorylating Cdk.
(b) marking cyclins for destruction by proteolysis.
(c) inhibiting cyclin transcription.
(d) activating apoptosis.
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