Cell Cycle Regulation Quiz

What is the cell cycle?

• A method of cell communication

• A series of events that takes place in a cell as it grows and divides

• A process that regulates cell size

• A mechanism that controls cell movement

What is the importance of cell cycle regulation?

• Maintaining proper cell size and function

• Increasing the number of cells rapidly

• Causing abnormal cell growth

• Preventing cell division

Which proteins control cell cycle activities?

• Histones

• E2F transcription factors

• Cyclins

• CDKs

What is the function of the retinoblastoma protein (Rb) in the cell cycle?

• Regulates spindle assembly

• Promotes cell division

• Inhibitor of cell cycle progression from G1 to S phase

• Activates cyclins

What is the role of Cyclin-CDK complex in the cell cycle?

• Modifying certain proteins to regulate the cell cycle

• Initiating apoptosis

• Halting cell division

• Promoting cell migration

Which checkpoint ensures that incomplete or damaged chromosomes are not passed on to daughter cells?

• Spindle Assembly Checkpoint

• G2 checkpoint

• G1 checkpoint

• DNA Damage Checkpoint

What is the function of Cyclin Dependent Kinases (CDKs) in the cell cycle?

• Degrades cyclins

• Stimulates apoptosis

• Inhibits cell division

• Phosphorylates substrates to promote DNA and mitotic progressions

Which phase of the cell cycle involves DNA synthesis?

• S Phase

• G1 Phase

• G2 Phase

• M Phase