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07/12 07 Cell Reproduction and Meiosis Online Quiz Questions

Use this free practice quiz with 20 questions to review 07/12 07 Cell Reproduction and Meiosis, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: Some differentiated cells, such as neurons, may remain in G₀ rather than actively progressing through the cell cycle.

  1. A

    True

  2. B

    False

02
Choose one
1 point

During which phase of interphase is DNA replicated?

  1. A

    G₁ phase

  2. B

    S phase

  3. C

    G₂ phase

  4. D

    G₀ phase

03
Written response
1 point

What stage of meiosis separates homologous chromosomes and reduces the chromosome number from diploid to haploid?

04
Fill in the blank
1 point

During animal-cell cytokinesis, an actin-and-myosin contractile ring forms a that constricts the cell.

05
True or false
1 point

True or false: A second round of DNA replication occurs between meiosis I and meiosis II.

  1. A

    True

  2. B

    False

06
Choose one
1 point

Which outcome is typical of one complete mitotic division?

  1. A

    Four genetically different haploid cells

  2. B

    Two genetically similar cells with the original chromosome number

  3. C

    Two genetically different haploid cells

  4. D

    One genetically identical diploid cell

07
Choose all
1 point

Select all processes that directly contribute to genetic variation during normal sexual reproduction.

  1. A

    Crossing over during prophase I

  2. B

    Independent assortment at metaphase I

  3. C

    Random fertilization

  4. D

    Cytokinesis in a somatic cell

  5. E

    Chromosome condensation in prophase

08
Written response
1 point

Ignoring crossing over, approximately how many chromosome combinations can independent assortment produce in human gametes?

09
Fill in the blank
1 point

In meiosis I, separate; in meiosis II, separate.

10
Choose one
1 point

A cell has lost its nuclear envelope, and spindle microtubules are attaching to chromosome kinetochores. Which stage of mitosis is it in?

  1. A

    Telophase

  2. B

    Prometaphase

  3. C

    Anaphase

  4. D

    Metaphase

11
Choose all
1 point

Select all conditions that can activate cell-cycle checkpoint responses that delay division.

  1. A

    DNA damage

  2. B

    Incomplete DNA replication

  3. C

    Incorrect spindle attachments

  4. D

    A cell having completed normal growth

  5. E

    A chromosome being fully condensed

12
Open ended
1 point

Explain how mitosis and meiosis differ in their number of nuclear divisions, chromosome-separation pattern, chromosome number and genetic similarity of products, and biological roles.

13
Choose one
1 point

Immediately after S phase, before sister chromatids separate, how many chromosomes and chromatids are in a typical human somatic cell?

  1. A

    23 chromosomes and 46 chromatids

  2. B

    46 chromosomes and 46 chromatids

  3. C

    46 chromosomes and 92 chromatids

  4. D

    92 chromosomes and 92 chromatids

14
True or false
1 point

True or false: A mutation confined to a somatic cell is generally passed to that individual's offspring.

  1. A

    True

  2. B

    False

15
Choose one
1 point

A cell has damaged DNA before mitosis begins. Which response is most consistent with the role of cell-cycle checkpoints?

  1. A

    They ensure that every cell immediately enters mitosis.

  2. B

    They can delay division when DNA damage or incorrect spindle attachment is detected.

  3. C

    They replace damaged chromosomes with new chromosomes.

  4. D

    They permanently remove every cell that has entered G₂ phase.

16
Choose one
1 point

Which event is characteristic of cytokinesis in a plant cell but not the usual cytokinesis mechanism in an animal cell?

  1. A

    A cleavage furrow made from cellulose forms around the animal cell.

  2. B

    A contractile ring forms a cell plate inside the plant cell.

  3. C

    Vesicles form a cell plate that develops into a new plant cell wall.

  4. D

    The nuclear envelope becomes the new wall in both cell types.

17
Choose one
1 point

A researcher observes a mitotic cell in which cohesin has been released and the duplicated chromosome copies are moving toward opposite poles. What has occurred?

  1. A

    Sister chromatids separate, and each becomes an individual chromosome.

  2. B

    Homologous chromosomes pair to form tetrads.

  3. C

    DNA is replicated for the first time in the cell cycle.

  4. D

    The chromosome number is reduced by half.

18
Choose one
1 point

Why does meiosis I reduce chromosome number from diploid to haploid?

  1. A

    Sister chromatids separate and immediately produce four cells.

  2. B

    The cell replicates its DNA for a second time.

  3. C

    Homologous chromosomes remain paired permanently in one nucleus.

  4. D

    Homologous chromosomes separate while sister chromatids remain joined.

19
Written response
1 point

What is the biological term for the pairing of homologous chromosomes during prophase I of meiosis?

20
Written response
1 point

A species has three chromosome types. Ignoring crossing over, how many chromosome combinations can independent assortment produce in its gametes?