Question 1

Reduction division is unique to

Accepted Answer

A)  the second meiotic division. 
B)  the first meiotic division. 
C)  mitosis. 
D)  interphase. 
E)  cell cycle stages G1 and G2. 
A)  the second meiotic division. 
B)  the first meiotic division. 
C)  mitosis. 
D)  interphase. 
E)  cell cycle stages G1 and G2. B

Question 2

Which of the following statements about prokaryote cell replication is CORRECT?

Accepted Answer

A)  The newly forming cell wall and cell membrane grow outwards from the middle of the cell. 
B)  The circular DNA molecule is unattached to the plasma membrane before and after replication. 
C)  The circular DNA molecule is single stranded before it replicates. 
D)  The two replicated DNA molecules are separated by the growth of the plasma membrane and cell wall between them. 
E)  The newly replicated DNA is attached to the plasma membrane on opposite side of the cell. 
A)  The newly forming cell wall and cell membrane grow outwards from the middle of the cell. 
B)  The circular DNA molecule is unattached to the plasma membrane before and after replication. 
C)  The circular DNA molecule is single stranded before it replicates. 
D)  The two replicated DNA molecules are separated by the growth of the plasma membrane and cell wall between them. 
E)  The newly replicated DNA is attached to the plasma membrane on opposite side of the cell. D

Question 3

Checkpoint controls in cell division

Accepted Answer

A)  are important during G2 to inhibit the MPF activity and prevent entry into M phase. 
B)  are essential for ensuring the DNA integrity of replication. 
C)  involve the activation of cyclin-dependent kinases by binding to cyclin. 
D)  are points in cell division where specific proteins are phosphorylated. 
E)  All of these statements about checkpoint controls are correct. 
A)  are important during G2 to inhibit the MPF activity and prevent entry into M phase. 
B)  are essential for ensuring the DNA integrity of replication. 
C)  involve the activation of cyclin-dependent kinases by binding to cyclin. 
D)  are points in cell division where specific proteins are phosphorylated. 
E)  All of these statements about checkpoint controls are correct. E

Question 4

All of the following are characteristics of cancer cells, EXCEPT

Accepted Answer

A)  absolute numbers of chromosomes. 
B)  chromosomal abnormalities. 
C)  normal cell cycle progression. 
D)  loss of check point controls. 
E)  loss of response to cell growth signals. 
A)  absolute numbers of chromosomes. 
B)  chromosomal abnormalities. 
C)  normal cell cycle progression. 
D)  loss of check point controls. 
E)  loss of response to cell growth signals.

Question 5

An important feature of prophase of mitosis is

Accepted Answer

A)  crossing over between homologous chromosomes. 
B)  the pairing up of chromosomes. 
C)  the exchange of genetic material. 
D)  the condensation of chromosomes. 
E)  the breakdown of the nuclear membrane. 
A)  crossing over between homologous chromosomes. 
B)  the pairing up of chromosomes. 
C)  the exchange of genetic material. 
D)  the condensation of chromosomes. 
E)  the breakdown of the nuclear membrane.

Question 6

In eukaryote cells, the amount of DNA in a cell doubles during the

Accepted Answer

A)  S phase of the cell cycle. 
B)  G1 phase of the cell cycle. 
C)  M phase of the cell cycle. 
D)  G2 phase of the cell cycle. 
E)  G0 phase of the cell cycle. 
A)  S phase of the cell cycle. 
B)  G1 phase of the cell cycle. 
C)  M phase of the cell cycle. 
D)  G2 phase of the cell cycle. 
E)  G0 phase of the cell cycle.

Question 7

In animal cells, a drug that disrupts actin-based activity in the cell would be expected to prevent

Accepted Answer

A)  cytokinesis. 
B)  DNA replication. 
C)  formation of the mitotic spindle fibres. 
D)  condensation of the chromosomes. 
E)  movement of the chromosomes. 
A)  cytokinesis. 
B)  DNA replication. 
C)  formation of the mitotic spindle fibres. 
D)  condensation of the chromosomes. 
E)  movement of the chromosomes.

Question 8

The mitotic spindle attaches to the centromere by inserting its microtubules in the

Accepted Answer

A)  kinetochore. 
B)  equatorial plate. 
C)  synaptonemal complex. 
D)  centrosome. 
E)  asters. 
A)  kinetochore. 
B)  equatorial plate. 
C)  synaptonemal complex. 
D)  centrosome. 
E)  asters.

Question 9

During which phase does the S-phase-promoting factor activate proteins?

Accepted Answer

A)  S 
B)  G2 
C)  G1 
D)  G0 
E)  M 
A)  S 
B)  G2 
C)  G1 
D)  G0 
E)  M

Question 10

What is the result when homologous chromosomes are randomly segregated, combined with crossing-over events?

Accepted Answer

A)  Mitosis 
B)  New combinations of parental genes 
C)  All options listed here are correct 
D)  Generation of haploid cells 
E)  Sexual reproduction 
A)  Mitosis 
B)  New combinations of parental genes 
C)  All options listed here are correct 
D)  Generation of haploid cells 
E)  Sexual reproduction

Question 11

Following fertilisation, what is the name of the process that generates somatic cells that make up a developing embryo?

Accepted Answer

A)  Mitosis 
B)  Binary fission 
C)  Meiosis 
D)  Homologous recombination 
E)  Cellular demarcation 
A)  Mitosis 
B)  Binary fission 
C)  Meiosis 
D)  Homologous recombination 
E)  Cellular demarcation

Question 12

Meiosis produces four cells that are

Accepted Answer

A)  haploid and genetically identical to each other. 
B)  haploid and genetically identical to the parent cell. 
C)  haploid and genetically different from each other. 
D)  diploid and genetically different from each other. 
E)  diploid and genetically different from the parent cell. 
A)  haploid and genetically identical to each other. 
B)  haploid and genetically identical to the parent cell. 
C)  haploid and genetically different from each other. 
D)  diploid and genetically different from each other. 
E)  diploid and genetically different from the parent cell.

Question 13

Animal and plant cells are usually

Accepted Answer

A)  diploid. 
B)  haploid. 
C)  triploid. 
D)  homologous. 
E)  reproductive. 
A)  diploid. 
B)  haploid. 
C)  triploid. 
D)  homologous. 
E)  reproductive.

Question 14

In animal cells, the centrosomes

Accepted Answer

A)  are formed during prophase. 
B)  separate during prophase. 
C)  contain two centrioles. 
D)  are a protein disc for attachment of microtubules. 
E)  attach to the centromeres. 
A)  are formed during prophase. 
B)  separate during prophase. 
C)  contain two centrioles. 
D)  are a protein disc for attachment of microtubules. 
E)  attach to the centromeres.

Question 15

Meiosis and mitosis have a number of features in common. However, only meiosis has the following feature.

Accepted Answer

A)  The presence of chromatids. 
B)  The pairing-up of homologous chromosomes. 
C)  The movement of chromosomes to the poles of the cell. 
D)  The condensation of chromosomes. 
E)  The separation of sister kinetochores and rapid movement to the poles of the cell. 
A)  The presence of chromatids. 
B)  The pairing-up of homologous chromosomes. 
C)  The movement of chromosomes to the poles of the cell. 
D)  The condensation of chromosomes. 
E)  The separation of sister kinetochores and rapid movement to the poles of the cell.

Question 16

DNA in a prokaryotic cell is

Accepted Answer

A)  a linear structure. 
B)  moved around the cell by spindle fibres. 
C)  composed of a single, circular molecule. 
D)  attached to the nuclear membrane. 
E)  condenses to form a visible structure during binary fission. 
A)  a linear structure. 
B)  moved around the cell by spindle fibres. 
C)  composed of a single, circular molecule. 
D)  attached to the nuclear membrane. 
E)  condenses to form a visible structure during binary fission.

Question 17

Very specialised cells such as nerve cells no longer undergo division. In what stage of the cell cycle are these cells?

Accepted Answer

A)  G1 phase 
B)  S phase 
C)  G2 phase 
D)  Mitosis 
E)  G0 phase 
A)  G1 phase 
B)  S phase 
C)  G2 phase 
D)  Mitosis 
E)  G0 phase

Question 18

Which of the following provides evidence to show cytokinesis is independent of mitosis?

Accepted Answer

A)  Cytokinesis does not begin until anaphase. 
B)  Anti-microtubule drugs applied to dividing cells inhibit chromosome separation but not cytokinesis. 
C)  A phragmoplast forms in plants but not in animals. 
D)  Cytokinesis is dependent on the formation of the midbody and mitosis is not. 
E)  In meiosis, there are two separate cell divisions, not one. 
A)  Cytokinesis does not begin until anaphase. 
B)  Anti-microtubule drugs applied to dividing cells inhibit chromosome separation but not cytokinesis. 
C)  A phragmoplast forms in plants but not in animals. 
D)  Cytokinesis is dependent on the formation of the midbody and mitosis is not. 
E)  In meiosis, there are two separate cell divisions, not one.

Question 19

A diploid cell with a total of sixteen chromosomes undergoes mitosis. This type of division would result in which of the following?

Accepted Answer

A)  Four genetically identical cells. 
B)  Two cells each with eight chromosomes. 
C)  Two cells each with sixteen chromosomes. 
D)  Two cells which are genetically different. 
E)  Four genetically different cells. 
A)  Four genetically identical cells. 
B)  Two cells each with eight chromosomes. 
C)  Two cells each with sixteen chromosomes. 
D)  Two cells which are genetically different. 
E)  Four genetically different cells.

Question 20

An organism has 24 chromosomes. After meiosis II, but before cytokinesis, how many chromosomes will each cell have?

Accepted Answer

A)  6 
B)  12 
C)  24 
D)  36 
E)  48 
A)  6 
B)  12 
C)  24 
D)  36 
E)  48

Exam 8: Cell Division

Reduction division is unique to

Which of the following statements about prokaryote cell replication is CORRECT?

Checkpoint controls in cell division

All of the following are characteristics of cancer cells, EXCEPT

An important feature of prophase of mitosis is

In eukaryote cells, the amount of DNA in a cell doubles during the

In animal cells, a drug that disrupts actin-based activity in the cell would be expected to prevent

The mitotic spindle attaches to the centromere by inserting its microtubules in the

During which phase does the S-phase-promoting factor activate proteins?

What is the result when homologous chromosomes are randomly segregated, combined with crossing-over events?

Following fertilisation, what is the name of the process that generates somatic cells that make up a developing embryo?

Meiosis produces four cells that are

Animal and plant cells are usually

In animal cells, the centrosomes

Meiosis and mitosis have a number of features in common. However, only meiosis has the following feature.

DNA in a prokaryotic cell is

Very specialised cells such as nerve cells no longer undergo division. In what stage of the cell cycle are these cells?

Which of the following provides evidence to show cytokinesis is independent of mitosis?

A diploid cell with a total of sixteen chromosomes undergoes mitosis. This type of division would result in which of the following?

An organism has 24 chromosomes. After meiosis II, but before cytokinesis, how many chromosomes will each cell have?

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