APFIVE To investigate the role of cyclin-dependent kinases (CDKs) in the cell cycle, a student treated a sample of cells with a chemical that inhibits CDK activity. The student observed that the cells continued to progress through the cell cycle and concluded that CDKs are not essential for this process. Which of the following best explains a potential flaw in the student’s conclusion?
CDKs are only involved in the apoptosis process, not in the cell cycle progression.
The student’s conclusion was correct; CDKs are not essential for cell cycle progression.
The chemical might not have effectively inhibited CDK activity, or there are redundant pathways that can compensate for the lack of CDK activity.
The cell cycle does not involve CDKs; it is solely regulated by cyclins.
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