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Praxis General Science: Cell Reproduction & Division Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1.

The following are consequences of meiotic recombination:

I. Increased genetic diversity

II. Exchange of parts of homologous chromosomes

III. Stabilization of chromosomes at the metaphase plate

Question 2 2. Which statement about the number of human chromosomes is correct?

Question 3 3. All of the following statements are correct EXCEPT:

Question 4 4. Although not a stage of mitosis, this phase of a cell's life is when DNA is copied.

Question 5 5. What is true about the chromosomes in YOUR cells?

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Question 6 6.

Which of the following is an example of aneuploidy?

I. A haploid cell with one copy of chromosome 21

II. A diploid cell with three copies of chromosome 21

III. A diploid cell with four copies of the X chromosome

Question 7 7. Sickle cell anemia results from a mutation in the hemoglobin gene on both homologous chromosomes. At conception, which of the following is a plausible explanation for why some people with this mutation might not be at risk of developing sickle cell anemia?

Question 8 8. Different forms of a gene are called:

Question 9 9. What is the term used for the shuffling of genetic information that is seen in Prophase I?

Question 10 10. In which stage of mitosis do the chromosomes pull apart and move away from the center of the cell?

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Question 11 11. During animal cell division, actin filaments organize into the _____.

Question 12 12. ____ reproduction is a form of reproduction in which offspring are produced from the union of ____ from two genetically different parents.

Question 13 13. A situation in which an otherwise diploid cell has three copies of a particular chromosome is known as _____.

Question 14 14. Chromosome condensation:

Question 15 15.

Which of the following structures does NOT participate in the cell division of a sunflower cell?

I. Contractile ring

II. Cell plate

III. Vesicle

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Question 16 16. After meiosis I, each daughter cell contains:

Question 17 17. ____ reproduction is a form of reproduction from a single parent based on ____.

Question 18 18.

Which of the following statements about gametes are true?

I. In sexual reproduction, each parent provides genetic material for the formation of a gamete cell.

II. Gametes are produced by mitosis.

III. If a sexually reproducing organism is diploid, the gametes are haploid.

Question 19 19. A diploid cell which has one copy of chromosome 16 would be _____.

Question 20 20. A pathologist issued a report on the karyotype of a patient. A doctor might use this information to identify:

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Question 21 21. Which of the following statements about asexual reproduction is NOT true?

Question 22 22. Two aberrant cells are found in the dividing skin tissue of an otherwise normal human. One cell has only one copy of chromosome 16, while the other has three copies. The cause of these aberrant cells is most likely due to _____.

Question 23 23. Which of the following characteristics is unique to meiosis?

Question 24 24.

Place the following steps in the cell cycle into the order in which they occur.

I. G1

II. G2

III. S phase

IV. M phase

Question 25 25. Why are adult stem cells useful?

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Question 26 26. If the diploid chromosome count in humans is 46, how many pairs of homologous chromosomes are there?

Question 27 27. How many chromosomes can be lost before it is considered a lethal event?

Question 28 28. Even though meiosis is a big event for a cell, most of a cell's life is spent in this phase where it is growing and replicating DNA.

Question 29 29. Where do totipotent stem cells occur?

Question 30 30. A picture in which all of the homologous chromosomes of an organism have been stained and organized is called a(n):

Praxis General Science: Cell Reproduction & Division Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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