試題詳解

24. Which of the following statements about the cell cycle is FALSE?
(A) Maturation-promoting factor (MPF) stimulates nuclear envelope breakdown by phosphorylating the lamin proteins of nuclear lamina.
(B) Active MPF phosphorylates microfilament-associated proteins to facilitate formation of the mitotic spindle.
(C) Active MPF phosphorylates histones to allow chromosome condensation.
(D) Epidermal growth factor can induce cells to pass through the G1 checkpoint and into S phase through the Ras pathway.
(E) The p21 protein functions to suppress the activity of Cdk-cyclin complex to block passage through the G1 checkpoint.