Question 1

Which of the following is a correct association?

Accepted Answer

A)   cytokinesis-division of the chromosomes
B)   centromere-forms spindle fibers during prophase
C)   haploid-having two copies of each chromosome
D)   sister chromatids-two identical chromosome strands still attached at the centromere
E)   mitosis-when a cell duplicates and then divides twice to reduce chromosome number by halfF) B) and C)
G) C) and D)

Question 2

What lines up at the metaphase plate during both metaphase I of meiosis and metaphase of mitosis?

Accepted Answer

A)   Metaphase 1 of meiosis: single chromosomes composed of two sister chromatidsMetaphase of mitosis: single chromosomes composed of two sister chromatids
B)   Metaphase 1 of meiosis: homologous chromosomesMetaphase of mitosis: homologous chromosomes
C)   Metaphase 1 of meiosis: single chromosomes composed of two sister chromatidsMetaphase of mitosis: single chromosomes composed of one sister chromatid
D)   Metaphase 1 of meiosis: homologous chromosomesMetaphase of mitosis: chromosomes composed of two sister chromatids
E)   Metaphase 1 of meiosis: single chromosomes composed of two sister chromatidsMetaphase of mitosis: homologous chromosomesF) B) and D)
G) None of the above

Question 3

During which phases of mitosis do the chromosomes look like Xs?

Accepted Answer

A)   prophase, anaphase
B)   anaphase, metaphase
C)   metaphase, telophase
D)   prophase, metaphase
E)   anaphase, telophaseF) B) and E)
G) A) and B)

Question 4

The second meiotic division is essentially a mitotic division except for the fact that the cells produced are

Accepted Answer

A)   haploid.
B)   diploid.
C)   polyploid.
D)   autosomal.
E)   somatic.F) C) and D)
G) All of the above

Question 5

Technically, mitosis refers to nuclear division and not cytoplasmic division.

Accepted Answer

A) True 
 B)False

Question 6

You are examining a cell under the microscope that is undergoing cell division and cannot find any asters. What else would be absent in this cell?

Accepted Answer

A)   a cell plate
B)   centrosomes
C)   a spindle
D)   a cleavage furrow
E)   chromosomesF) A) and B)
G) None of the above

Question 7

Explain what is meant by the term homologous chromosomes.

Accepted Answer

Answers will vary. When a cell...

Question 8

The length of DNA in each chromosome is longer than the diameter of the cell nucleus.

Accepted Answer

A) True 
 B)False

Question 9

Hormones that deliver a signal to the plasma membrane of target cells are known as

Accepted Answer

A)   cyclins.
B)   internal and external signals.
C)   growth factors.
D)   checkpoints.
E)   proto-oncogenes.F) All of the above
G) A) and E)

Question 10

In which stage of mitosis do the chromosomes line up in the center of the cell?

Accepted Answer

A)   interphase
B)   prophase
C)   metaphase
D)   anaphase
E)   telophaseF) B) and C)
G) C) and D)

Question 11

The formation of sperm is termed

Accepted Answer

A)   oogenesis.
B)   homologous formation.
C)   spermatogenesis.
D)   gametogenesis
E)   mitosis.F) A) and E)
G) A) and C)

Question 12

In humans, the diploid number of chromosomes is

Accepted Answer

A)   20.
B)   46.
C)   23.
D)   variable depending on whether male or female.
E)   92.F) B) and C)
G) A) and E)

Question 13

Mitotic division is the normal process of cell reproduction to build and maintain the body of an organism, while meiosis takes place only in the formation of gametes for reproduction.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following proteins would you expect to be a coded for by a proto-oncogene?

Accepted Answer

A)   a growth factor receptor
B)   a DNA repair protein
C)   a protein involved with the G1 checkpoint
D)   an enzyme involved with apoptosis
E)   a DNA replication proteinF) B) and D)
G) B) and E)

Question 15

Synapsis occurs during what stage of meiosis?

Accepted Answer

A)   anaphase I
B)   telophase II
C)   metaphase II
D)   prophase I
E)   anaphase IIF) All of the above
G) A) and B)

Question 16

If a cell stops at the G1 checkpoint, this is most likely due to what problem?

Accepted Answer

A)   The DNA has not finished replicating.
B)   The chromosomes are not aligned properly.
C)   There is DNA damage.
D)   The cell is cancerous.
E)   There is no problem. The cell normally stops at the G1 checkpoint.F) A) and B)
G) A) and C)

Question 17

The nuclear membrane reappears in mitosis during

Accepted Answer

A)   interphase.
B)   prophase.
C)   metaphase.
D)   anaphase.
E)   telophase.F) D) and E)
G) B) and C)

Question 18

Which of the following processes occurs in both mitosis and meiosis?

Accepted Answer

A)   homologous chromosomes pair up
B)   two series of cell divisions
C)   sister chromosomes separating during the second division
D)   single chromosomes line up along the metaphase plate
E)   fertilization restores the diploid numberF) C) and D)
G) A) and E)

Question 19

What forms the contractile ring in animal cells?

Accepted Answer

A)   membrane vesicles
B)   actin filaments
C)   cellulose fibrils
D)   cell wall
E)   histonesF) None of the above
G) A) and B)

Question 20

During what stage of mitosis does the nuclear envelope disappear and the chromosomes become distinct?

Accepted Answer

A)   interphase
B)   prophase
C)   metaphase
D)   anaphase
E)   telophaseF) C) and D)
G) A) and B)

Exam 5: Cell Division

The second meiotic division is essentially a mitotic division except for the fact that the cells produced are

Correct AnswerverifiedShow Answer

What forms the contractile ring in animal cells?

Correct AnswerverifiedShow Answer

Which of the following proteins would you expect to be a coded for by a proto-oncogene?

Correct AnswerverifiedShow Answer

Which of the following processes occurs in both mitosis and meiosis?

Correct AnswerverifiedShow Answer

What lines up at the metaphase plate during both metaphase I of meiosis and metaphase of mitosis?

Correct AnswerverifiedShow Answer

During which phases of mitosis do the chromosomes look like Xs?

Correct AnswerverifiedShow Answer

Explain what is meant by the term homologous chromosomes.

Correct AnswerverifiedAnswers will vary. When a cell...View AnswerShow Answer

The formation of sperm is termed

Correct AnswerverifiedShow Answer

Hormones that deliver a signal to the plasma membrane of target cells are known as

Correct AnswerverifiedShow Answer

The length of DNA in each chromosome is longer than the diameter of the cell nucleus.

Correct AnswerverifiedShow Answer

In humans, the diploid number of chromosomes is

Correct AnswerverifiedShow Answer

Synapsis occurs during what stage of meiosis?

Correct AnswerverifiedShow Answer

The nuclear membrane reappears in mitosis during

Correct AnswerverifiedShow Answer

Mitotic division is the normal process of cell reproduction to build and maintain the body of an organism, while meiosis takes place only in the formation of gametes for reproduction.

Correct AnswerverifiedShow Answer

Technically, mitosis refers to nuclear division and not cytoplasmic division.

Correct AnswerverifiedShow Answer

If a cell stops at the G1 checkpoint, this is most likely due to what problem?

Correct AnswerverifiedShow Answer

You are examining a cell under the microscope that is undergoing cell division and cannot find any asters. What else would be absent in this cell?

Correct AnswerverifiedShow Answer

During what stage of mitosis does the nuclear envelope disappear and the chromosomes become distinct?

Correct AnswerverifiedShow Answer

In which stage of mitosis do the chromosomes line up in the center of the cell?

Correct AnswerverifiedShow Answer

Which of the following is a correct association?

Correct AnswerverifiedShow Answer

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Answers will vary. When a cell...
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If a cell stops at the G₁checkpoint, this is most likely due to what problem?

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