Understanding the Cell Cycle

What does the cell cycle primarily describe?

• Cell growth and division

• Mitochondrial function

• DNA replication

• Protein synthesis

What is the role of G0 phase in the cell cycle?

• Non-dividing state

• Protein activation

• Cell division

• DNA repair

Which phase follows G1 if the cell is committed to division?

• G2 phase

• M phase

• S phase

• G0 phase

What is the significance of the G1 checkpoint?

• To replicate DNA

• To produce energy

• To check cell size

• To decide on cell division

Which phase is known for DNA replication?

• G1 phase

• S phase

• G2 phase

• M phase

What happens if a cell fails the G2 checkpoint?

• It enters G0 phase

• Begins cytokinesis

• DNA replication begins

• May undergo apoptosis

How is apoptosis related to the cell cycle checkpoints?

• Is prevented by all checkpoints

• May be initiated if checkpoints fail

• Occurs independently of checkpoints

• Initiated if checkpoints are passed

What is checked during the mitosis checkpoint?

• Cell size

• Protein levels

• Chromosome separation

• Cyclin concentration

What is the primary function of cytokinesis?

• Cell growth

• Cytoplasm division

• Chromosome alignment

• DNA replication

What does non-disjunction during mitosis lead to?

• Immediate cell death

• Normal cell function

• Errors in chromosome separation

• Cellular repair mechanisms activation