試題詳解

38. Regarding to eukaryotic cell cycle which statement is (are) CORRECT?
(A) The molecular events promoting entry into the cell cycle are conserved across species, and are regulated by extracellular signals such as nutritional states and the presence of mitogens.
(B) Activation of mitotic CDKs (cyclin-dependent kinases) initiates mitosis via promoting nuclear envelope and mitotic spindle formation.
(C) Mitotic CDKs inactivation triggers exit from mitosis.
(D) Cytokinesis must be coordinated with the site of nuclear division, which is particularly important in cells undergoing asymmetric division.
(E) There is a surveillance mechanism in cell cycle regulation consist of sensors that monitor a particular cellular event, a signaling pathway, and an effector that halts cell cycle progression and activates repair system when needed.