Question 1

During anaphase,daughter chromosomes do which of the following things?

Accepted Answer

A)  They are condensed into chromatin. 
B)  They move toward opposite spindle poles. 
C)  They form homologous pairs. 
D)  They move toward the same spindle pole. 
A)  They are condensed into chromatin. 
B)  They move toward opposite spindle poles. 
C)  They form homologous pairs. 
D)  They move toward the same spindle pole.

Question 2

The most critical stage of interphase for a cell that needs to undergo division is the ________ phase; if the cell does not complete this phase,it cannot undergo DNA segregation.

Accepted Answer

S,synthesi

Question 3

The daughter cells that are produced in meiosis I are haploid.

Accepted Answer

A) True 
 B)False

Question 4

Oocytes are such big cells that a person with good eyesight could see them without a microscope.

Accepted Answer

A) True 
 B)False

Question 5

At the end of telophase,the cell is ready for physical division into two cells; this process is called ________.

Accepted Answer

The answer of At the end of telophase,the cell is...

Question 6

The mitotic spindle is made of

Accepted Answer

A)  centrosomes. 
B)  chromosomes. 
C)  kinetochores. 
D)  microtubules. 
A)  centrosomes. 
B)  chromosomes. 
C)  kinetochores. 
D)  microtubules.

Question 7

How many sister chromatids are in a bivalent?

Accepted Answer

A)  two 
B)  four 
C)  eight 
D)  16 
A)  two 
B)  four 
C)  eight 
D)  16

Question 8

One way to create genetic diversity is through the random distribution of chromosomes into daughter cells during the meiotic stage of ________.

Accepted Answer

The answer of One way to create genetic diversity is...

Question 9

Plant cells perform cytokinesis differently than animal cells because

Accepted Answer

A)  plant cytokinesis takes place during interphase, whereas animal cytokinesis takes place during cell division. 
B)  plant chromosomes are more difficult to separate than animal chromosomes. 
C)  the plant cell's rigid cell wall prevents the plasma membrane from pinching inward as it does in animal cells. 
D)  the centrosomes of plants do not replicate prior to cell division. 
A)  plant cytokinesis takes place during interphase, whereas animal cytokinesis takes place during cell division. 
B)  plant chromosomes are more difficult to separate than animal chromosomes. 
C)  the plant cell's rigid cell wall prevents the plasma membrane from pinching inward as it does in animal cells. 
D)  the centrosomes of plants do not replicate prior to cell division.

Question 10

Gametes are produced by meiosis rather than mitosis because

Accepted Answer

A)  mitosis would produce too many sister cells. 
B)  meiosis reduces the number of chromosomes so that the zygotes resulting from fertilization will have one full genome consisting of a diploid number of chromosomes. 
C)  meiosis doubles the number of chromosomes so that each gamete has twice the usual number of genes. 
D)  meiosis ensures that the gametes are identical to the cell that produced them. 
A)  mitosis would produce too many sister cells. 
B)  meiosis reduces the number of chromosomes so that the zygotes resulting from fertilization will have one full genome consisting of a diploid number of chromosomes. 
C)  meiosis doubles the number of chromosomes so that each gamete has twice the usual number of genes. 
D)  meiosis ensures that the gametes are identical to the cell that produced them.

Question 11

Chromosomes are lined up at the middle of the cell during the phase of cell division called

Accepted Answer

A)  metaphase. 
B)  anaphase. 
C)  telophase. 
D)  interphase. 
A)  metaphase. 
B)  anaphase. 
C)  telophase. 
D)  interphase.

Question 12

The G₀ phase of the cell cycle is distinguished by

Accepted Answer

A)  active preparation for DNA synthesis. 
B)  a doubling of chromosomes. 
C)  the absence of preparation for DNA synthesis. 
D)  the appearance of a metaphase plate. 
A)  active preparation for DNA synthesis. 
B)  a doubling of chromosomes. 
C)  the absence of preparation for DNA synthesis. 
D)  the appearance of a metaphase plate.

Question 13

Sexual reproduction results in many benefits for a population,but also some inconveniences.Which of the following statements is NOT an example of an inconvenience of sexual reproduction?

Accepted Answer

A)  Each participant in sexual reproduction must locate an appropriate mate. 
B)  The time required for sexual reproduction may mean that short-term opportunities for population growth via asexual reproduction will be missed. 
C)  Some genetic combinations may be disadvantageous and/or lethal for offspring, and the effort invested in producing offspring would therefore be wasted. 
D)  Sexual reproduction with each reproductive event is more likely to result in too many offspring for the species. 
A)  Each participant in sexual reproduction must locate an appropriate mate. 
B)  The time required for sexual reproduction may mean that short-term opportunities for population growth via asexual reproduction will be missed. 
C)  Some genetic combinations may be disadvantageous and/or lethal for offspring, and the effort invested in producing offspring would therefore be wasted. 
D)  Sexual reproduction with each reproductive event is more likely to result in too many offspring for the species.

Question 14

DNA molecules are exceptionally long (about 6 feet in humans)and exceptionally thin.To minimize breakage and yet facilitate transcription,DNA forms into a complex known as chromatin by wrapping around ________.

Accepted Answer

The answer of DNA molecules are exceptionally long (about 6...

Question 15

An unduplicated chromosome contains

Accepted Answer

A)  two sister chromatids. 
B)  a single molecule of double-stranded DNA combined with a large number of proteins. 
C)  the cell's karyotype. 
D)  its own spindle poles. 
A)  two sister chromatids. 
B)  a single molecule of double-stranded DNA combined with a large number of proteins. 
C)  the cell's karyotype. 
D)  its own spindle poles.

Question 16

Which of the following statements about the chromosomes in a homologous pair is true?

Accepted Answer

A)  They both came from the organism's mother. 
B)  They both came from the organism's father. 
C)  One chromosome came from the organism's mother and the other came from the organism's father. 
D)  Neither chromosome came from the organism's parents. 
A)  They both came from the organism's mother. 
B)  They both came from the organism's father. 
C)  One chromosome came from the organism's mother and the other came from the organism's father. 
D)  Neither chromosome came from the organism's parents.

Question 17

During anaphase I of meiosis,which of the following things happens?

Accepted Answer

A)  Sister chromatids are pulled apart toward opposite poles. 
B)  Each member of a bivalent moves toward a different pole. 
C)  All bivalents are pulled to the same pole. 
D)  Paired homologues become attached to each other by microtubules. 
A)  Sister chromatids are pulled apart toward opposite poles. 
B)  Each member of a bivalent moves toward a different pole. 
C)  All bivalents are pulled to the same pole. 
D)  Paired homologues become attached to each other by microtubules.

Question 18

You are examining the rapidly dividing cells of an onion root tip and you see a cell whose chromosomes are visible and arranged in approximately the same shape and size as the nucleus.What stage of mitosis is this cell in?

Accepted Answer

A)  metaphase 
B)  prophase 
C)  anaphase 
D)  telophase 
A)  metaphase 
B)  prophase 
C)  anaphase 
D)  telophase

Question 19

Which of the following statements is a correct reason why the process of cell division in prokaryotes is different from cell division in eukaryotes?

Accepted Answer

A)  Prokaryotes have a circular DNA molecule; eukaryotes have linear DNA molecules in their nuclei. 
B)  Prokaryotic cells do not undergo cell division, and eukaryotic cells do. 
C)  Prokaryotic cells are larger than eukaryotic cells. 
D)  Prokaryotic DNA contains bases that are different from those in eukaryotic DNA. 
A)  Prokaryotes have a circular DNA molecule; eukaryotes have linear DNA molecules in their nuclei. 
B)  Prokaryotic cells do not undergo cell division, and eukaryotic cells do. 
C)  Prokaryotic cells are larger than eukaryotic cells. 
D)  Prokaryotic DNA contains bases that are different from those in eukaryotic DNA.

Question 20

If a drug that inhibits the formation of microtubules is added to a culture of cells during the G₂ phase,how would the cell division be affected?

Accepted Answer

A)  Cytokinesis would occur more rapidly. 
B)  The nuclear envelope would be unable to break down. 
C)  DNA synthesis would not occur. 
D)  The spindle apparatus would be unable to form. 
A)  Cytokinesis would occur more rapidly. 
B)  The nuclear envelope would be unable to break down. 
C)  DNA synthesis would not occur. 
D)  The spindle apparatus would be unable to form.

Exam 7: Cell Division

During anaphase,daughter chromosomes do which of the following things?

The most critical stage of interphase for a cell that needs to undergo division is the ________ phase; if the cell does not complete this phase,it cannot undergo DNA segregation.

The daughter cells that are produced in meiosis I are haploid.

Oocytes are such big cells that a person with good eyesight could see them without a microscope.

At the end of telophase,the cell is ready for physical division into two cells; this process is called ________.

The mitotic spindle is made of

How many sister chromatids are in a bivalent?

One way to create genetic diversity is through the random distribution of chromosomes into daughter cells during the meiotic stage of ________.

Plant cells perform cytokinesis differently than animal cells because

Gametes are produced by meiosis rather than mitosis because

Chromosomes are lined up at the middle of the cell during the phase of cell division called

The G₀ phase of the cell cycle is distinguished by

Sexual reproduction results in many benefits for a population,but also some inconveniences.Which of the following statements is NOT an example of an inconvenience of sexual reproduction?

DNA molecules are exceptionally long (about 6 feet in humans)and exceptionally thin.To minimize breakage and yet facilitate transcription,DNA forms into a complex known as chromatin by wrapping around ________.

An unduplicated chromosome contains

Which of the following statements about the chromosomes in a homologous pair is true?

During anaphase I of meiosis,which of the following things happens?

You are examining the rapidly dividing cells of an onion root tip and you see a cell whose chromosomes are visible and arranged in approximately the same shape and size as the nucleus.What stage of mitosis is this cell in?

Which of the following statements is a correct reason why the process of cell division in prokaryotes is different from cell division in eukaryotes?

If a drug that inhibits the formation of microtubules is added to a culture of cells during the G₂ phase,how would the cell division be affected?

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