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12.細胞週期的調控系統中，檢查哨(checkpoint)主要設在何處？
(A) G1期及S期
(B)S期及G2期
(C) G2期及M期
(D) G1期及G2期。

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難度： 適中
1F
yulin 研一上 (2020/02/04)
5e385d632d2b5.jpg#s-1024,436Cell cycle checkpointsA checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.There are a number of checkpoints, but the three most important ones are:The G_11​start subscript, 1, end subscript checkpoint, at the G_11​start subscript, 1, end subscript/S transition.The G_22​start subscript, 2, end subscript checkpoint, at the G_22​start subscript, 2, end subscript/M transition.The spindle checkpoint, at the transition from metaphase to anaphas...
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2F
阿摩 高三下 (2021/05/20)

G1期:進行細胞生長

S 期:進行DNA複製,使DNA成為相同的兩份

G2期:製造蛋白質,準備細胞分裂的所需物質

M期：有絲分裂；為進行核裂(染色體分離)和質裂(細胞質分裂)的階段。

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12.細胞週期的調控系統中，檢查哨(checkpoint)主要設在何處？ (A)..-阿摩線上測驗