6A - Cell Cycle Quiz

The G1, S, and G2 phases are collectively known as ________.

• Mitosis

• Cytokinesis

• Interphase

• Resting Phase

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The cell cycle is important for the growth of organisms because it allows for ____.

• energy production

• cell division

• waste removal

• nutrient absorption

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DNA replication is described as ________ because each new DNA molecule contains one original strand and one new strand.

• conservative

• semiconservative

• dispersive

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

• G1 phase

• S phase

• G2 phase

• M phase

What happens during the prophase stage of mitosis?

• A) Chromosomes align at the cell's equator

• B) Chromatin condenses into chromosomes, the nuclear membrane breaks down, and spindle fibers form

• C) Sister chromatids are pulled apart

• D) The nuclear membrane reforms.

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Cytokinesis is the process in which the _______ divides, producing two identical daughter cells.

• Nucleus

• Cytoplasm

• Chromosome

• Spindle fiber

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When observing cells under a microscope, the phase where chromosomes align in the center of the cell is called ____.

• A) Interphase

• B) Prophase

• C) Metaphase

• D) Anaphase

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Which of the following can disrupt the cell cycle?

• A) Mutations

• B) Proper DNA repair

• C) Controlled cell growth

• D) Balanced hormones

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What is the primary purpose of checkpoints in the cell cycle?

• To speed up cell division

• To ensure the cell is ready to proceed to the next stage

• To eliminate unnecessary cells

• To create new DNA

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Fill in the blank: If the checkpoints in the cell cycle do not function correctly, it might lead to _____.

• faster cell growth

• uncontrolled cell division

• cell repair

• DNA synthesis

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