Multiple choice

Cyclin protein is required for cell cycle. Which other molecule is essential for completion of cell cycle?

  1. CCk

  2. CKc

  3. CdK

  4. CKd
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C Correct answer
Explanation

Cyclin-dependent kinases (CdKs) are essential regulators of the cell cycle. CdKs bind to cyclins to form active complexes that drive cell cycle progression. The other options (CCk, CKc, CKd) are not standard abbreviations for known cell cycle regulators. CdK phosphorylates target proteins to advance the cell through its phases.

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