Each of the following would inhibit cell progression through the cell cycle except
A)DNA damage during replication.
B)kinase phosphorylation of mitotic Cdk.
C)APC activity during M phase.
D)unphosphorylated Retinoblastoma activity during G1.
E)TGFβ signaling.

Question

Quizplus · Accepted Answer

Kinase phosphorylation of mitotic Cdk is actually necessary for cell cycle progression, particularly for the transition from G2 phase to mitosis. This process activates the Cyclin-dependent kinases (Cdks) which are crucial for cell cycle regulation. The other options listed are inhibitors of cell cycle progression.

Each of the Following Would Inhibit Cell Progression Through the Cell