AP Biology Mitosis And Meiosis Online Quiz
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This quiz covers mitosis and meiosis. You have until Sunday February 9th at midnight to complete this timed quiz. You have 60 minutes to do, with one submission.
- 1.
Name the stage where the nuclear envelope forms.
- A.
Anaphase
- B.
Metaphase
- C.
Prophase
- D.
Telophase
- E.
Does not occur in any of these stages
Correct Answer
D. TelophaseExplanation
During telophase, the nuclear envelope reforms around the separated sets of chromosomes at each pole of the cell. This marks the end of mitosis and the formation of two new nuclei. In telophase, the nuclear envelope is essential for compartmentalizing the genetic material and protecting it from the cytoplasm. Therefore, the correct answer is telophase.Rate this question:
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- 2.
Name the phase where the chromosomes duplicate.
- A.
Anaphase
- B.
Metaphase
- C.
Prophase
- D.
Telophase
- E.
Does not occur in any of these stages
Correct Answer
E. Does not occur in any of these stagesExplanation
Chromosomes duplicate during the S phase of the cell cycle, which is not included in any of the given stages (anaphase, metaphase, prophase, telophase). Therefore, the correct answer is that chromosome duplication does not occur in any of these stages.Rate this question:
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- 3.
Name the phase where the chromosomes condense.
- A.
Anaphase
- B.
Metaphase
- C.
Prophase
- D.
Telophase
- E.
Does not occur in any of these stages
Correct Answer
C. ProphaseExplanation
During prophase, the chromosomes in a cell condense and become visible under a microscope. This is an important step in cell division as it allows for the chromosomes to be easily separated and distributed to the daughter cells. The condensation of chromosomes in prophase is necessary for the proper progression of mitosis or meiosis.Rate this question:
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- 4.
When diploid cells undergo normal mitosis and cytokinesis, which of the following occurs as the cell(s) make(s) new cell(s)?
- A.
N + n --> 2n
- B.
2n --> n + n
- C.
2n --> 2n + 2n
- D.
N --> n + n
- E.
N --> 2n + 2n
Correct Answer
C. 2n --> 2n + 2nExplanation
During normal mitosis and cytokinesis, diploid cells replicate their DNA to form two identical copies of each chromosome, resulting in a cell with a 2n (diploid) chromosome number. The correct answer, 2n --> 2n + 2n, indicates that the cell with a diploid chromosome number (2n) divides to form two daughter cells, each with the same diploid chromosome number (2n) as the parent cell. This process ensures that the genetic information is accurately distributed to the new cells, maintaining the diploid chromosome number.Rate this question:
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- 5.
All of the following are true of sister chromatids during metaphase EXCEPT
- A.
Sister chromatids line up at the metaphase plate
- B.
Sister chromatids have already been duplicated
- C.
Sister chromatids have centromeres
- D.
A microtubule from each pole is attached to each pair of sister chromatids
- E.
Sister chromatids are highly condensed DNA known as chromatin
Correct Answer
E. Sister chromatids are highly condensed DNA known as chromatinExplanation
During metaphase, sister chromatids are not highly condensed DNA known as chromatin. Instead, they are fully duplicated and have already undergone condensation to form distinct structures. The correct answer is that sister chromatids are not highly condensed DNA known as chromatin.Rate this question:
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- 6.
What stage of mitosis is this cell in?
- A.
Anaphase
- B.
Interphase
- C.
Metaphase
- D.
Prophase
- E.
Telophase
Correct Answer
C. MetaphaseExplanation
This cell is in the metaphase stage of mitosis. During metaphase, the chromosomes align themselves along the equatorial plane of the cell. This alignment is crucial for the accurate separation of chromosomes during the subsequent stage of mitosis, anaphase. In anaphase, the sister chromatids are pulled apart and move towards opposite poles of the cell. Therefore, the given cell cannot be in anaphase as the chromosomes are still aligned in the center, indicating metaphase.Rate this question:
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- 7.
Various types of cells were examined during mitosis and cytokinesis to determine the information in the table below. Cell Type # of chromosomes cell plate forms nuclear membrane disinegrates centrosomes present 1 16 yes yes yes 2 1 no no no 3 4 no yes yes Based on the data, cells of type I could be which of the following?
- A.
Animal cells only
- B.
Plant cells only
- C.
Bacterial cells only
- D.
Either animal or plant cells
- E.
Either plant or bacterial cells
Correct Answer
B. Plant cells onlyExplanation
The given data shows that cells of type I have 16 chromosomes, cell plate forms during cytokinesis, the nuclear membrane disintegrates, and centrosomes are present. These characteristics are consistent with the process of mitosis and cytokinesis in plant cells. Therefore, cells of type I could be plant cells only.Rate this question:
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- 8.
Various types of cells were examined during mitosis and cytokinesis to determine the information in the table below. Cell Type # of chromosomes cell plate forms nuclear membrane disinegrates centrosomes present 1 16 yes yes yes 2 1 no no no 3 4 no yes yes Based on the data, cells of type I would have all of the following additional features EXCEPT?
- A.
Ribosomes
- B.
Histones
- C.
Mitotic spindle
- D.
Kinetochore microtubules
- E.
Centrioles
Correct Answer
B. HistonesExplanation
Based on the given data, cells of type I have all of the following additional features except histones. This is because histones are proteins that help organize and package DNA into structures called nucleosomes, which are then further coiled and condensed to form chromosomes. Since cells of type I have 16 chromosomes, it can be inferred that they have histones present to help organize their DNA. Therefore, histones would not be an exception among the additional features of cells of type I.Rate this question:
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- 9.
Which stage forms four haploid daughter cells in meiosis?
- A.
Prophase I
- B.
Anaphase I
- C.
Anaphase II
- D.
Telophase I
- E.
Does not occur during any of these stages
Correct Answer
C. Anaphase IIExplanation
Anaphase II is the stage in meiosis where the sister chromatids separate and move towards opposite poles of the cell. This results in the formation of four haploid daughter cells, each containing a single set of chromosomes. Therefore, anaphase II is the stage that forms four haploid daughter cells in meiosis.Rate this question:
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- 10.
Which stage is where sister chromatids detach and separate from each other in meiosis?
- A.
Prophase I
- B.
Anaphase I
- C.
Anaphase II
- D.
Telophase I
- E.
Does not occur during any of these stages
Correct Answer
C. Anaphase IIExplanation
In meiosis, sister chromatids detach and separate from each other during anaphase II. Anaphase II is the stage where the sister chromatids, which are still held together by a centromere, are pulled apart to opposite poles of the cell. This separation is essential for the formation of haploid daughter cells with a single set of chromosomes.Rate this question:
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- 11.
Which stage is is when crossing over and synapsis occurs in meiosis?
- A.
Prophase I
- B.
Anaphase I
- C.
Anaphase II
- D.
Telophase I
- E.
Does not occur during any of these stages
Correct Answer
A. Prophase IExplanation
During prophase I of meiosis, crossing over and synapsis occur. Crossing over is the exchange of genetic material between homologous chromosomes, which leads to genetic variation. Synapsis is the pairing of homologous chromosomes, forming structures called bivalents or tetrads. These events are essential for the proper separation of chromosomes during meiosis and the creation of genetically diverse gametes.Rate this question:
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- 12.
If a prophase cell of a diploid organism is just beginning mitosis or meiosis and has 40 pg of DNA, each new daughter cell produced will have I. 40 pg of DNA at the end of mitosis II. 20 pg of DNA at the end of mitosis III. 20 pg of DNA at the end of meiosis
- A.
I only
- B.
II only
- C.
III only
- D.
I and III only
- E.
II and III only
Correct Answer
D. I and III onlyExplanation
During mitosis, the DNA is replicated and then divided equally between the two daughter cells. Therefore, each daughter cell will have the same amount of DNA as the parent cell, which is 40 pg in this case (I).
During meiosis, DNA replication occurs followed by two rounds of cell division. The first division separates homologous chromosomes, and the second division separates sister chromatids. Each daughter cell produced at the end of meiosis will have half the amount of DNA as the parent cell. Therefore, each daughter cell will have 20 pg of DNA (III).
II is incorrect because it suggests that each daughter cell will have 20 pg of DNA at the end of mitosis, which is not the case.Rate this question:
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- 13.
Which of the following are most similar during mitosis and meiosis?
- A.
Tetrads form during prophase of mitosis and prophase I of meiosis
- B.
Homologous chromosomes pair during prophase of mitosis and prophase II of meiosis
- C.
Homologous chromosomes separate during anaphase of mitosis and anaphase II of meiosis
- D.
Sister chromatids separate during anaphase of mitosis and anaphase II of meiosis
- E.
Diploid cells are produced during telophase of mitosis and telophase II of meiosis
Correct Answer
D. Sister chromatids separate during anaphase of mitosis and anaphase II of meiosisExplanation
During both mitosis and meiosis, sister chromatids separate during anaphase. In mitosis, sister chromatids separate and move towards opposite poles of the cell, resulting in two identical daughter cells. In meiosis II, sister chromatids also separate, but this occurs after the homologous chromosomes have already separated in meiosis I. This leads to the production of haploid cells in meiosis. Therefore, the separation of sister chromatids during anaphase is the most similar process in both mitosis and meiosis.Rate this question:
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- 14.
Which of the following statements is true?
- A.
Crossing over occurs in prophase I of meisis and metaphase in mitosis
- B.
DNA replication (S phase) occurs once prior to mitosis and twice prior to meiosis
- C.
Both mitosis and meiosis results in cells identical to parent
- D.
Interphase occurs once in mitosis and twice in meiosis
- E.
Homologous chromosomes are seen in mitosis
Correct Answer
D. Interphase occurs once in mitosis and twice in meiosisExplanation
In mitosis, interphase occurs once, which includes the G1, S, and G2 phases. These phases involve cell growth, DNA replication, and preparation for cell division. In meiosis, there are two rounds of cell division, resulting in four daughter cells. Interphase occurs twice in meiosis, once before the first division (meiosis I) and once before the second division (meiosis II). This allows for DNA replication and genetic recombination to occur before the cells divide. Therefore, the statement "Interphase occurs once in mitosis and twice in meiosis" is true.Rate this question:
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- 15.
For an organism which a diploid number of 6, how are the chromosomes arranged during metaphase of mitosis?
- A.
A
- B.
B
- C.
C
- D.
D
- E.
None of the diagrams above
Correct Answer
D. DExplanation
The diploid number of an organism refers to the total number of chromosomes present in its cells. In this case, the diploid number is 6. During metaphase of mitosis, the chromosomes align in the middle of the cell in a single file line, forming what is called the metaphase plate. However, since none of the diagrams above are provided, it is not possible to determine the specific arrangement of the chromosomes during metaphase of mitosis.Rate this question:
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- 16.
For an organism which a diploid number of 6, how are the chromosomes arranged during metaphase I of meiosis?
- A.
A
- B.
B
- C.
C
- D.
D
- E.
None of the diagrams above
Correct Answer
C. CExplanation
During metaphase I of meiosis, the chromosomes are arranged in pairs at the equator of the cell. This is known as homologous pairing, where each chromosome aligns next to its homologous partner. In this case, since the organism has a diploid number of 6, there would be 3 pairs of chromosomes arranged in a line at the center of the cell.Rate this question:
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- 17.
A researcher treats cells with a chemical that prevents DNA synthesis from starting. This treatment traps cells in which part of the cell cycle?
- A.
G1
- B.
S
- C.
G2
- D.
M
- E.
C
Correct Answer
A. G1Explanation
When DNA synthesis is prevented from starting, cells are trapped in the G1 phase of the cell cycle. The G1 phase is the first phase of the cell cycle, where cells grow and prepare for DNA replication. Without DNA synthesis, the cells cannot progress to the S phase, where DNA replication occurs. Therefore, the correct answer is G1.Rate this question:
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- 18.
In function, the plant cell structure that is analogous to an animal cell's cleavage furrow is the
- A.
Chromosome
- B.
Cell plate
- C.
Nucleus
- D.
Centrosome
- E.
Spindle apparatus
Correct Answer
B. Cell plateExplanation
The cell plate is the correct answer because it is the structure in plant cells that forms during cell division and eventually develops into the cell wall. In animal cells, the cleavage furrow is the structure that forms during cell division and eventually pinches the cell into two daughter cells. Both the cell plate in plant cells and the cleavage furrow in animal cells are involved in cytokinesis, the process of dividing the cytoplasm and separating the two daughter cells. Therefore, the cell plate is the plant cell structure that is analogous to an animal cell's cleavage furrow.Rate this question:
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- 19.
In some organisms, mitosis occurs without cytokinesis occurring. This will result in
- A.
Cells with more than 1 nucleus
- B.
Cells that are unusually small
- C.
Cells lacking nuclei
- D.
Destruction of chromosomes
- E.
Cell cycles lacking an S phase
Correct Answer
A. Cells with more than 1 nucleusExplanation
In some organisms, mitosis can occur without cytokinesis, which is the process of dividing the cytoplasm and creating two separate cells. Without cytokinesis, the resulting cell will have multiple nuclei, as the genetic material duplicates during mitosis but the cytoplasm does not divide. Therefore, the correct answer is "cells with more than 1 nucleus."Rate this question:
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- 20.
The results for spermatogenesis and oogenesis are the same.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because the results of spermatogenesis and oogenesis are not the same. Spermatogenesis is the process of producing sperm cells in males, while oogenesis is the process of producing egg cells in females. These two processes differ in terms of the number and size of gametes produced, as well as the timing and location of their occurrence. Spermatogenesis produces four mature sperm cells from each precursor cell, while oogenesis produces one mature egg cell from each precursor cell. Additionally, spermatogenesis occurs continuously throughout a male's reproductive life, while oogenesis occurs during specific stages of a female's reproductive cycle.Rate this question:
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Oct 11, 2024Quiz Edited by
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