Which of the Following Triggers the Cell's Passage Past the G₂

Question

Which of the following triggers the cell's passage past the G₂ checkpoint into mitosis?
A)PDGF
B)MPF
C)protein kinase
D)cyclin
E)Cdk

Accepted Answer

The passage past the G₂ checkpoint into mitosis is triggered by MPF (maturation-promoting factor), which is a complex of cyclin and Cdk (cyclin-dependent kinase).