The Mitotic Cell Cycle - A Level

Which of the following occurs latest in the cell cycle?

• Chromosomes move to the center of the cell.

• Chromosomes move to opposite ends of the cell.

• Microtubules begin to form.

• The nucleus breaks down.

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NGSS.HS-LS1-4

The mitotic spindle fibers attach to chromosomes via special structures termed _____.

• centrioles

• asters

• kinetochores

• centrosomes

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NGSS.HS-LS1-4

Which series progresses from the thinnest to the thickest in diameter?

• DNA > histone > chromosome > nucleosome

• histone > chromosome > DNA > nucleosome

• nucleosome > histone > DNA > chromosome

• DNA > histone > nucleosome > chromosome

The following are the activities of cells that need to carry out before mitosis, except _____.

• replicate its DNA

• duplicate its centrosome

• undergo cytokinesis

• make sister chromatids

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NGSS.HS-LS1-4

During which stages of mitosis does a typical cell contain twice its normal number of chromosomes?

1. Prophase

2. Metaphase

3. Anaphase

4. Telophase

• 1 and 2

• 2 and 3

• 3 and 4

• 1, 2, 3 and 4

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NGSS.HS-LS1-4

A scientist stains the chromosomes of a diploid plant cell with a fluorescent dye to observe the telomeres.

This cell has 38 chromosomes.

How many telomeres will the scientist observe in one of the nuclei during telophase of mitosis?

• 38

• 76

• 114

• 152

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NGSS.HS-LS1-4

This cell is in which stage of mitosis?

• Early prophase

• Late prophase (prometaphase)

• Metaphase

• Anaphase

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NGSS.HS-LS1-4

During mitosis in animal cells, which process occurs after prophase?

• Centrioles move towards the poles of the cell.

• Centromeres attach to spindle microtubules.

• Chromatids join to form chromosomes.

• Chromosomes condense and become visible.

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NGSS.HS-LS1-4

Which events listed are part of mitosis?

1 interphase

2 prophase

3 cytokinesis

• 1, 2 and 3

• 1 and 2 only

• 1 only

• 2 only

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NGSS.HS-LS1-4

Which of the following events do NOT occur in prophase of mitosis?

• DNA condenses to form chromosomes

• nuclear membrane breaks down

• mitotic spindle begins to form

• chromosomes are replicated

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NGSS.HS-LS1-4