Biology Test 3 Review

A cell spends most of its time in this stage of the cell cycle, where it grows, replicates DNA, and performs cell functions:

• Interphase

• Metaphase

• Mitosis

• Prophase

During what stage of Interphase does DNA get duplicated in preparation for mitosis?

• G₁

• G₂

• S

• G₀

During what phase of mitosis do the chromosomes line up in the middle?

• Metaphase

• Prophase

• Telophase

• Anaphase

In which stage of mitosis do the chromosomes pull apart?

• Prophase

• Metaphase

• Anaphase

• Telophase

In which stage of mitosis does the nuclear membrane dissolve and the chromosomes condense?

• Anaphase

• Cytonkinesis

• Interphase

• Prophase

In which stage of mitosis does the nuclear envelope begin to reform and the chromosomes being to unwind into chromatin?

• Cytokinesis

• Anaphase

• Telophase

• Prophase

Which of the following statements about the checkpoints in mitosis is CORRECT? (Select ALL that apply.)

• If the cell does NOT pass the G1 checkpoint, it enters the non-dividing state (G₀ Phase)

• The G2 checkpoint is controlled by DNA replication completion, DNA mutations, and cell size.

• The M checkpoint occurs in interphase.

Cancer is: (Select ALL that apply)

• abnormal, rapid cell growth.

• any kind of tumor.

• uncontrolled mitosis.

• an example of non-disjunction.

What are the nucleotides made of?

• Sugar, Phosphate, nitrogen base
• Phosphate, Adenine, nitrogen base
• Thymine, Adenine, Cytomine
• Phosphate, Nitrogen, Adenine

Which of the following best describes a DNA molecule? (Select ALL that apply.)

• Its shape is a double helix.

• It contains deoxyribose sugar.

• It is made of amino acids.

• It contains the nitrogenous base Uracil.