Question

Progression of cell cycle is regulated by the concentration of which type of molecule?

• A. Centrosomes
• B. Cyclin-dependent kinases
• C. Cyclins
• D. Microtubule

Answer 1

Answer: (B)

Cyclin-dependent kinases

Cyclin-dependent kinases (CDKs) is an enzyme that regulates the cell cycle. They are also involved in regulating transcription and processing of mRNA. It is found in all eukaryotes and their regulatory function in the cell cycle has been evolutionarily conserved. It is involved in the regulation of cell cycle in G${}_1$ phase.

Thus, the correct answer is option B.