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.

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統計: A(3), B(28), C(12), D(7), E(6) #2052875

詳解 (共 4 筆)

#5770378
(B)Active MPF phosph...
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#4439465
spindle由微管組成
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#6351601
補充

MPF在細胞週期中的功能

  1. 磷酸化相關蛋白:促進紡錘體形成

  2. 磷酸化核膜的膠原蛋白:使核膜分解

  3. 磷酸化組蛋白:使染色體凝縮

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#7150892
這是一個關於細胞週期調控的經典問題。 ...
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