Unit 3 Quiz Review

Which phase of the cell cycle is primarily responsible for DNA replication?

• G1 phase

• S phase

• G2 phase

• M phase

During which stage of mitosis do the chromosomes align at the cell's equator (middle)?

• Prophase

• Metaphase

• Anaphase

• Telophase

Tags

NGSS.HS-LS1-4

Explain how the G1 checkpoint contributes to the regulation of the cell cycle.

• It ensures that DNA is replicated correctly.

• It checks for cell size, nutrients, and DNA damage.

• It verifies that all chromosomes are attached to the spindle.

• It initiates apoptosis if errors are detected.

What is the primary function of apoptosis in the context of cell cycle regulation?

• To promote cell growth

• To eliminate damaged or unnecessary cells

• To accelerate cell division

• To repair DNA damage

Describe how cancer can result from disruptions in the cell cycle.

• Cancer cells divide uncontrollably due to the loss of cell cycle regulation.

• Cancer cells stop dividing and enter a dormant state.

• Cancer cells undergo apoptosis more frequently.

• Cancer cells replicate DNA more accurately.

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NGSS.HS-LS1-4

Which of the following stages of mitosis involves the separation (Pulls apart) of sister chromatids?

• Prophase

• Metaphase

• Anaphase

• Telophase

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NGSS.HS-LS1-4

How does the G2 checkpoint ensure the completion of cell division?

• It checks for DNA damage and ensures all DNA is replicated.

• It verifies that the cell has enough energy to divide.

• It ensures that the spindle fibers are properly attached.

• It initiates cytokinesis.

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NGSS.HS-LS1-4

Identify the phase of the cell cycle where the cell prepares for mitosis.

• G1 phase

• S phase

• G2 phase

• M phase

Discuss the significance of the metaphase checkpoint in mitosis.

• It ensures that DNA replication is complete.

• It verifies that all chromosomes are properly attached to the spindle fibers.

• It checks for cell size and nutrient availability.

• It initiates the separation of sister chromatids.

Tags

NGSS.HS-LS1-4

Which phase of mitosis is characterized by the reformation of the nuclear membrane?

• Prophase

• Metaphase

• Anaphase

• Telophase

Tags

NGSS.HS-LS1-4