Christina Marshall
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Quiz on Bio 110 Final: Chapter 15, created by Christina Marshall on 13/12/2017.

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Christina Marshall
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Bio 110 Final: Chapter 15

Question 1 of 10

1

In which phase of the cell cycle are chromosomes replicated?

Select one of the following:

  • G1 Phase

  • S Phase

  • M phase

  • G2 Phase

  • none of the above

Explanation

Question 2 of 10

1

If two chromosomes are homologous, they

Select one of the following:

  • look similar under the microscope

  • have very similar DNA sequences

  • carry the same types of genes

  • may carry different versions of the same gene

  • are all of the above

Explanation

Question 3 of 10

1

Checkpoints during the cell cycle are important because they

Select one of the following:

  • allow the organelle activity to catch up to cellular demands

  • ensure the integrity of the cell's DNA

  • allow the cell to generate sufficient ATP for cellular division

  • are the only time DNA replication can occur

  • do all of the above

Explanation

Question 4 of 10

1

Which of the following is a reason for mitotic cell division?

Select one of the following:

  • asexual reproduction

  • gamete formation in animals

  • multicellularity

  • all of the above

  • both a and c

Explanation

Question 5 of 10

1

A replicated chromosome is composed of

Select one of the following:

  • two homologous chromosomes held together at the centromere.

  • four sister chromatids held together at the centromere.

  • two sister chromatids held together at the centromere

  • four homologous chromosomes held together at the centromere.

  • one chromosome with a centromere.

Explanation

Question 6 of 10

1

Which of the following is not an event of anaphase of mitosis?

Select one of the following:

  • The nuclear envelope breaks apart

  • Sister chromatids separate

  • Kinetochore microtubules shorten, pulling the chromosomes to the poles.

  • Polar microtubules push against each other, moving the poles father apart.

  • All of the above occur during anaphase.

Explanation

Question 7 of 10

1

A student is looking at cells under the microscope. The cells are from an organism that has a diploid number of 14. In one particular case, the cell has seven replicated chromosomes (sister chromatids) aligned at the metaphase plate of the cell. Which of the following statements accurately describes the particular cell?

Select one of the following:

  • The cell is in metaphase of mitosis.

  • The cell is in metaphase of meiosis I.

  • The cell is in metaphase of meiosis II.

  • All of the above are correct.

  • Both b and c are correct.

Explanation

Question 8 of 10

1

Which of the following statements accurately describes a difference between mitosis and meiosis?

Select one of the following:

  • Mitosis may produce diploid cells, where as meiosis produces haploid cells.

  • Homologous chromosomes synapse during meiosis but do not synapse during mitosis.

  • Crossing over commonly occurs during meiosis, but it does not commonly occur during mitosis.

  • All of the above are correct

  • Both a and c are correct.

Explanation

Question 9 of 10

1

During crossing over in meiosis I,

Select one of the following:

  • homologous chromosomes are not altered.

  • homologous chromosomes exchange genetic material.

  • chromosomal damage occurs

  • genetic information is lost

  • cytokinesis occurs

Explanation

Question 10 of 10

1

Aneuploidy may be the result of

Select one of the following:

  • Duplication of a region of a chromosome

  • Inversion of a region of a chromosome

  • nondisjunction during meiosis

  • interspecies breeding

  • all of the above

Explanation

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