Understanding the Cell Cycle and Mitosis

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

• G1 phase

• S phase

• G2 phase

• M phase

What is the main purpose of mitosis in multicellular organisms?

• Production of gametes

• Growth and repair

• Energy production

• Protein synthesis

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Which of the following is NOT a stage of mitosis?

• Prophase

• Metaphase

• Cytokinesis

• Anaphase

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The function of cell cycle checkpoints is to (a)   .

• To speed up cell division
• To ensure the cell is ready to proc
• To destroy old cells
• To produce energy

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Which phase comes immediately after mitosis in the cell cycle?

• S phase

• G1 phase

• G2 phase

• G0 phase

During which phase of mitosis do chromosomes line up in the center of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

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Why is it important for cells to regulate the cell cycle?

• To ensure cells divide uncontrollably

• To prevent errors and maintain healthy growth

• To increase mutation rates

• To stop all cell division

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A researcher finds that a group of cells are dividing uncontrollably. Which cell cycle process is most likely malfunctioning, and what could be the result?

• Proper checkpoint regulation; this could result in cancer

• DNA replication; this could result in more energy

• Protein synthesis; this could result in larger cells

• Cytokinesis; this could result in cell death

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What would most likely happen if a cell skipped the M phase of the cell cycle?

• The cell would not divide and remain with duplicated DNA

• The cell would produce extra organelles

• The cell would immediately enter G0 phase

• The cell would undergo apoptosis

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During which phase of the cell cycle does the cell prepare for mitosis by checking for DNA damage and ensuring all proteins needed for division are present?

• M phase

• S phase

• G1 phase

• G2 phase