Cell Cycle Mastery Quiz

Which phase of the cell cycle is characterized by the cell growing and preparing for DNA replication?

• G1 phase

• S phase

• G2 phase

• M phase

During which phase of the cell cycle does DNA replication occur?

• G1 phase

• S phase

• G2 phase

• M phase

What is the main purpose of the G2 phase in the cell cycle?

• Cell growth

• DNA replication

• Preparation for mitosis

• Cell division

Which of the following is NOT a phase of mitosis?

• Prophase

• Metaphase

• Anaphase

• Interphase

What is the role of cyclins in the regulation of the cell cycle?

• They degrade DNA.

• They promote cell division.

• They regulate the timing of the cell cycle in eukaryotic cells.

• They prevent the cell from dividing.

Which checkpoint ensures that DNA has been replicated correctly before mitosis begins?

• G1 checkpoint

• G2 checkpoint

• Metaphase checkpoint

• Anaphase checkpoint

What is the significance of the metaphase checkpoint?

• It checks for DNA damage before replication.

• It ensures that all chromosomes are properly aligned before division.

• It confirms that DNA has been replicated.

• It ensures that the cell has enough resources to divide.

How does cancer relate to the cell cycle?

• Cancer cells undergo cell division at a slower rate than normal cells.

• Cancer cells can bypass cell cycle checkpoints.

• Cancer cells cannot replicate DNA.

• Cancer cells are more likely to undergo apoptosis.

What is the main difference between mitosis and meiosis?

• Mitosis results in two identical daughter cells, while meiosis results in four genetically different cells.

• Mitosis occurs only in eukaryotic cells, while meiosis occurs in both prokaryotic and eukaryotic cells.

• Mitosis involves one cell division, while meiosis involves two successive cell divisions.

• Both A and C are correct.

Which of the following is a phase unique to meiosis?

• Prophase I

• Metaphase

• Anaphase II

• Telophase