Unit 3 Review

The diagrams shown represent stages of the cellular division process mitosis. Which could represent the final mitotic phase, when new nuclear membranes begin to form?

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A pictograph of onion root tip cells during mitosis is shown below. 

Which phase of mitosis is occurring in the cell indicated by the arrow?

• Anaphase, when chromosomes condense and become visible

• Metaphase, when chromosomes are aligned at the center of the cell

• Prophase, when separated chromosomes move toward the cell's poles

• Telophase, when two daughter nuclei form and cytokinesis begins

If the S phase of mitosis was removed in the cell cycle, what would happen to the daughter cells?

• The daughter cells would have the same amount of genetic information as the parent cell.

• The daughter cells would have half of the original genetic information as the parent cell.

• The daughter cells would have double the amount of genetic information as the parent cell.

• The daughter cells would have ¼ the amount of genetic information as the parent cell.

Which part of the Cell Cycle takes the longest?

• Interphase
• Mitosis
• Prophase
• Cytokinesis

When DNA is in its less coiled, "relaxed," state, between cell divisions, it is called

• autosomes
• chromatid
• chromatin
• centromere

During the ___ phase, DNA is replicated.

• G1
• S
• G2
• M

Includes G phases and S phase

• Interphase

• Metaphase

• Cytokinesis

Which of the following does not take place during the interphase?

• DNA replication

• Production of spindle fibers

• Cell division

• Absorption of nutrients

Significance of mitosis is in –

• Producing identical cells genetically similar to mother cell

• Increasing cellular mass

• Swift division

The cell cycle involves several checkpoints. Why?

• To repair DNA damage.
• To check for glucose.
• To prevent dehydration.