During which specific phase of the cell cycle is DNA replicated?

G1 Phase S Phase G2 Phase M Phase

A cell with 20 chromosomes undergoes mitosis. How many chromosomes will be in each of the two resulting daughter cells?

10 20 40 5

What is the primary difference between cytokinesis in plant and animal cells?

Animal cells form a cell plate; plant cells form a cleavage furrow. Plant cells do not undergo cytokinesis. Animal cells use a cell wall to divide the cytoplasm. Plant cells form a cell plate; animal cells form a cleavage furrow.

Which protein acts as a "master regulator" to check for DNA damage and can trigger apoptosis (programmed cell death) if errors are found?

Hemoglobin Insulin p53 Keratin

What is the correct order of the phases of mitosis?

Metaphase, Prophase, Anaphase, Telophase Prophase, Anaphase, Metaphase, Telophase Prophase, Metaphase, Anaphase, Telophase Telophase, Anaphase, Metaphase, Prophase Answer: C

Which of the following best describes "cancer" in the context of the cell cycle?

A viral infection of the cell nucleus. The process of cells becoming specialized. Uncontrolled cell growth and division. The natural death of old cells.

During which phase of mitosis do sister chromatids separate and move toward opposite poles of the cell?

Prophase Metaphase Anaphase Telophase

If a cell fails to clear the M checkpoint, which process is most likely to be blocked?

Separation of sister chromatids Preparation for the S phase DNA replication Protein synthesis

What is the purpose of the spindle fibers during mitosis?

To replicate the DNA. To form the new nuclear envelope. To synthesize ATP for the cell. To help separate the chromosomes.

How does the chromosome count in a human gamete (sperm or egg) compare to a somatic (body) cell?

Gametes have the same number (46). Gametes have half the number (23). Gametes have one-fourth the number (11.5). Gametes have twice as many (92).