Question 1

A person whose cells all contain a chromosome number of 2n+1 most likely has what type of condition?

Accepted Answer

A)  Monosomy
B)  Trisomy
C)  Cancer
D)  Obesity
E)  None,this is the normal chromosome number for humans.F) A) and B)
G) All of the above

Question 2

In later chapters,you will learn more about the regulation of gene expression.One way to regulate gene expression is to make changes to the histone proteins to alter how tightly the DNA is coiled and wrapped.The more tightly coiled and wrapped a particular region of DNA is,the less likely it is that the genes in that region will be expressed.Bearing this in mind,how tightly do you think regions of heterochromatin are compacted?

Accepted Answer

A)  Very tightly
B)  Moderately
C)  Loosely
D)  Not at allE) A) and D)
F) B) and C)

Question 3

What is separase?

Accepted Answer

A)  A protein that marks a protein called securin for destruction.
B)  A protein that is part of the cohesin complex.
C)  A protein that destroys cohesin through its protease activity.
D)  A protein that targets the mitotic cyclin for degradation.E) A) and D)
F) A) and C)

Question 4

A somatic cell from a corn plant normally contains 20 chromosomes.How many sister chromatids would that cell contain during G2 of the cell cycle?

Accepted Answer

A)  0
B)  10
C)  20
D)  40E) A) and D)
F) All of the above

Question 5

You are studying cell cycle progression in yeast cells.If you could prevent cdc2 from associating with the mitotic cyclin,the cells would:

Accepted Answer

A)  arrest in G1.
B)  arrest in G2.
C)  arrest in S.
D)  arrest in prometaphase.
E)  arrest in metaphase.F) A) and D)
G) A) and C)

Question 6

The progress of the eukaryotic cell cycle is regulated primarily by what proteins?

Accepted Answer

A)  Cyclins
B)  Histone proteins
C)  Condensins
D)  FtsZE) C) and D)
F) A) and B)

Question 7

A somatic cell from a garden pea normally contains 14 chromosomes.How many sister chromatids would that cell contain during G1 of the cell cycle?

Accepted Answer

A)  0
B)  7
C)  14
D)  28E) None of the above
F) C) and D)

Question 8

The stage of the cell cycle during which the cytoplasm divides to form two cells is called:

Accepted Answer

A)  G1
B)  S
C)  G2
D)  Mitosis
E)  CytokinesisF) A) and B)
G) B) and D)

Question 9

What is the sequence of events in a typical eukaryotic cell cycle?

Accepted Answer

A)  G1 to G2 to S to mitosis to cytokinesis
B)  G1 to S to G2 to mitosis to cytokinesis
C)  G1 to S to G2 to cytokinesis to mitosis
D)  G1 to G2 to mitosis to S to cytokinesis
E)  S to G1 to G2 to mitosis to cytokinesisF) None of the above
G) A) and B)

Question 10

Interphase is made up of what stages of the cell cycle?

Accepted Answer

A)  G1 + G2 + S
B)  S + cytokinesis
C)  prophase + metaphase + anaphase + telophase
D)  cytokinesis + mitosis
E)  G0 + G1 + G2F) C) and D)
G) A) and C)

Question 11

In bacterial cell division,the cell divides into two nearly equal halves.This process is referred to as:

Accepted Answer

A)  binary fission
B)  mitosis
C)  fusion
D)  meiosis
E)  cytokinesisF) A) and B)
G) None of the above

Question 12

The division of a bacterial cell occurs as the:

Accepted Answer

A)  cell wall develops cracks around the equator of the cell.
B)  chromosomes are pulled toward the ends of the cell.
C)  actin and microtubules constrict the cytoplasm.
D)  new membrane and cell wall materials begin to grow and form a septum.E) C) and D)
F) B) and C)

Question 13

What happens during Anaphase B?

Accepted Answer

A)  Kinetochores are pulled toward the poles.
B)  The spindle poles move apart.
C)  The spindle apparatus disassembles.
D)  The nuclear envelope reforms.
E)  The APC/C gets activated for the first time.F) A) and E)
G) B) and C)

Question 14

If there are 32 sister chromatids in a normal somatic cell,what is the haploid number for that cell?

Accepted Answer

A)  8
B)  16
C)  32
D)  64E) C) and D)
F) All of the above

Question 15

The drug Taxol,or Paclitaxel,is used to treat patients with a variety of cancers,including breast,lung and ovarian cancers.The drug works by stabilizing microtubules,and preventing their disassembly.The goal of the drug is to prevent dividing cells from being able to complete mitosis.As a result,cancerous cells can no longer divide.In a cell treated with Taxol,at what stage of mitosis will the cells arrest?

Accepted Answer

A)  Prior to metaphase
B)  Anaphase
C)  Telophase
D)  CytokinesisE) None of the above
F) A) and B)

Question 16

What is one of the roles of the APC/C during anaphase?

Accepted Answer

A)  To directly target the mitotic cyclins for destruction.
B)  To directly target cohesin for destruction.
C)  To directly target separase for destruction.
D)  To directly target microtubules for destruction.E) A) and B)
F) B) and D)

Question 17

The number of chromosomes in diploid eukaryotic cells

Accepted Answer

A)  is 46.
B)  can be predicted by the size of the organism.
C)  changes as each organism grows and ages.
D)  varies considerably from 2 to over 1000 in different species.E) All of the above
F) A) and B)

Question 18

During what stages of the cell cycle are sister chromatids bound together by cohesin?

Accepted Answer

A)  G1,S,G2
B)  S,G2
C)  G1,S
D)  S,G2,prophase,metaphase
E)  S,G2,prophase,metaphase,anaphase,telophaseF) A) and C)
G) D) and E)

Question 19

What is the portion of the cell cycle during which the chromosomes are invisible under the light microscope because they are not yet condensed?

Accepted Answer

A)  Interphase
B)  Prophase
C)  Metaphase
D)  Anaphase
E)  TelophaseF) A) and D)
G) A) and E)

Question 20

This is the stage of mitosis characterized by the alignment of the chromosomes in a ring along the inner circumference of the cell:

Accepted Answer

A)  Interphase
B)  Telophase
C)  Prophase
D)  MetaphaseE) A) and C)
F) All of the above

Exam 10: How Cells Divide

What is the sequence of events in a typical eukaryotic cell cycle?

Correct Answer
verified

What is the portion of the cell cycle during which the chromosomes are invisible under the light microscope because they are not yet condensed?

Correct Answer
verified

The stage of the cell cycle during which the cytoplasm divides to form two cells is called:

Correct Answer
verified

You are studying cell cycle progression in yeast cells.If you could prevent cdc2 from associating with the mitotic cyclin,the cells would:

Correct Answer
verified

Interphase is made up of what stages of the cell cycle?

Correct Answer
verified

The progress of the eukaryotic cell cycle is regulated primarily by what proteins?

Correct Answer
verified

A somatic cell from a corn plant normally contains 20 chromosomes.How many sister chromatids would that cell contain during G2 of the cell cycle?

Correct Answer
verified

What happens during Anaphase B?

Correct Answer
verified

Correct Answer
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A person whose cells all contain a chromosome number of 2n+1 most likely has what type of condition?

Correct Answer
verified

A somatic cell from a garden pea normally contains 14 chromosomes.How many sister chromatids would that cell contain during G1 of the cell cycle?

Correct Answer
verified

The number of chromosomes in diploid eukaryotic cells

Correct Answer
verified

What is separase?

Correct Answer
verified

This is the stage of mitosis characterized by the alignment of the chromosomes in a ring along the inner circumference of the cell:

Correct Answer
verified

The division of a bacterial cell occurs as the:

Correct Answer
verified

During what stages of the cell cycle are sister chromatids bound together by cohesin?

Correct Answer
verified

Correct Answer
verified

What is one of the roles of the APC/C during anaphase?

Correct Answer
verified

In bacterial cell division,the cell divides into two nearly equal halves.This process is referred to as:

Correct Answer
verified

If there are 32 sister chromatids in a normal somatic cell,what is the haploid number for that cell?

Correct Answer
verified

Exam 10: How Cells Divide

What is the sequence of events in a typical eukaryotic cell cycle?

Correct AnswerverifiedShow Answer

What is the portion of the cell cycle during which the chromosomes are invisible under the light microscope because they are not yet condensed?

Correct AnswerverifiedShow Answer

The stage of the cell cycle during which the cytoplasm divides to form two cells is called:

Correct AnswerverifiedShow Answer

You are studying cell cycle progression in yeast cells.If you could prevent cdc2 from associating with the mitotic cyclin,the cells would:

Correct AnswerverifiedShow Answer

Interphase is made up of what stages of the cell cycle?

Correct AnswerverifiedShow Answer

The progress of the eukaryotic cell cycle is regulated primarily by what proteins?

Correct AnswerverifiedShow Answer

A somatic cell from a corn plant normally contains 20 chromosomes.How many sister chromatids would that cell contain during G2 of the cell cycle?

Correct AnswerverifiedShow Answer

What happens during Anaphase B?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A person whose cells all contain a chromosome number of 2n+1 most likely has what type of condition?

Correct AnswerverifiedShow Answer

A somatic cell from a garden pea normally contains 14 chromosomes.How many sister chromatids would that cell contain during G1 of the cell cycle?

Correct AnswerverifiedShow Answer

The number of chromosomes in diploid eukaryotic cells

Correct AnswerverifiedShow Answer

What is separase?

Correct AnswerverifiedShow Answer

This is the stage of mitosis characterized by the alignment of the chromosomes in a ring along the inner circumference of the cell:

Correct AnswerverifiedShow Answer

The division of a bacterial cell occurs as the:

Correct AnswerverifiedShow Answer

During what stages of the cell cycle are sister chromatids bound together by cohesin?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

What is one of the roles of the APC/C during anaphase?

Correct AnswerverifiedShow Answer

In bacterial cell division,the cell divides into two nearly equal halves.This process is referred to as:

Correct AnswerverifiedShow Answer

If there are 32 sister chromatids in a normal somatic cell,what is the haploid number for that cell?

Correct AnswerverifiedShow Answer

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