A Particular Cyclin Called Cyclin E Forms a Complex with Cdk

question 8

Multiple Choice

A particular cyclin called cyclin E forms a complex with Cdk 2 (cyclin-dependent kinase 2) . This complex is important for the progression of the cell from G₁ into the S phase of the cell cycle. Which of the following statements is correct?

• A) The amount of free cyclin E is greatest during the S phase.
• B) The amount of free Cdk 2 is greater during G₁ compared to the S phase.
• C) The amount of free cyclin E is highest during G₁.
• D) The amount of free Cdk 2 is greatest during G₁.
• E) The activity of the cyclin E/Cdk 2 complex is highest during G₂.

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