Question 1

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. 
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.

Question 2

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

Accepted Answer

A) Cyclins 
B) Histone proteins 
C) Condensins 
D) FtsZ 
A) Cyclins 
B) Histone proteins 
C) Condensins 
D) FtsZ

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. 
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.

Question 4

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) Cytokinesis 
A) Prior to metaphase 
B) Anaphase 
C) Telophase 
D) Cytokinesis

Question 5

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 all 
A) Very tightly 
B) Moderately 
C) Loosely 
D) Not at all

Question 6

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 cytokinesis 
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 cytokinesis

Question 7

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. 
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.

Question 8

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. 
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.

Question 9

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. 
A) Monosomy 
B) Trisomy 
C) Cancer 
D) Obesity 
E) None,this is the normal chromosome number for humans.

Question 10

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) 64 
A) 8 
B) 16 
C) 32 
D) 64

Question 11

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) Telophase 
A) Interphase 
B) Prophase 
C) Metaphase 
D) Anaphase 
E) Telophase

Question 12

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) 40 
A) 0 
B) 10 
C) 20 
D) 40

Question 13

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

Question 14

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

Question 15

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) Metaphase 
A) Interphase 
B) Telophase 
C) Prophase 
D) Metaphase

Question 16

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) cytokinesis 
A) binary fission 
B) mitosis 
C) fusion 
D) meiosis 
E) cytokinesis

Question 17

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. 
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.

Question 18

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) Cytokinesis 
A) G1 
B) S 
C) G2 
D) Mitosis 
E) Cytokinesis

Question 19

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) 28 
A) 0 
B) 7 
C) 14 
D) 28

Question 20

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,telophase 
A) G1,S,G2 
B) S,G2 
C) G1,S 
D) S,G2,prophase,metaphase 
E) S,G2,prophase,metaphase,anaphase,telophase

Exam 10: How Cells Divide

What happens during Anaphase B?

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

What is separase?

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

The division of a bacterial cell occurs as the:

The number of chromosomes in diploid eukaryotic cells

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

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

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

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?

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

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

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

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

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

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

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?

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

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