Question 1

Which is NOT a correct association?

Accepted Answer

A)   S stage-DNA synthesis
B)   M stage-mitosis and cytokinesis
C)   interphase-shortest stage of the cell cycle
D)   G1 stage-cell grows in size and cell organelles increase in number
E)   G2 stage-metabolic preparation for mitosisF) A) and B)
G) C) and E)

Question 2

If the diploid chromosome number is 16,the chromosome number of each gamete will be

Accepted Answer

A)   4.
B)   8.
C)   12.
D)   16.
E)   32.F) None of the above
G) B) and D)

Question 3

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

Accepted Answer

A)   each chromosome is composed of two sister chromatids at both
B)   homologous chromosomes at both
C)   each chromosome composed of two sister chromatids for meiosis, each chromosome is composed of one sister chromatid for mitosis
D)   homologous chromosomes for meiosis, each chromosome is composed of two sister chromatids for mitosis
E)   each chromosome is composed of two sister chromatids for meiosis, homologous chromosomes for mitosisF) All of the above
G) A) and B)

Question 4

What is a potential outcome if one of your fathers gametes did not go through meiosis correctly and one of the chromosomes did not separate correctly?

Accepted Answer

A)   You inherited a normal amount of genetic material from your mother but inherited an extra chromosome from your father. One of your pairs of chromosomes will not be homologous.
B)   You inherited an abnormal amount of genetic material from both your mother and father. One of your pairs of chromosomes will not be homologous.
C)   You inherited a normal amount of genetic material from your mother but inherited an extra chromosome from your father. Two of your pairs of chromosomes will not be homologous.
D)   You inherited a normal amount of genetic material from both your mother and father resulting in the inheritance of a normal amount of genetic material.
E)   You inherited multiple genetic abnormalities, due to the faulty chromosomes from you father, resulting in a significant number of health issues.F) B) and E)
G) A) and C)

Question 5

Following a cut or scrape,which process repairs your skin?

Accepted Answer

A)   meiosis
B)   meiosis and mitosis
C)   mitosis
D)   mitosis and apoptosis
E)   apoptosisF) All of the above
G) A) and B)

Question 6

Chromosomes are attached to the spindle fibers in order to move to and from the equator.

Accepted Answer

A) True 
 B)False

Question 7

During crossing-over,

Accepted Answer

A)   chromosomes switch poles.
B)   mitosis becomes meiosis.
C)   chromatin becomes chromosomes.
D)   chromosomes become chromatin.
E)   chromatids exchange segments of genetic material.F) A) and D)
G) A) and C)

Question 8

The genes that code for the proteins of the signaling pathway could be classified as

Accepted Answer

A)   proto-oncogenes.
B)   caspase genes.
C)   DNA repair genes.
D)   tumor suppressor genes.
E)   cyclin genes.F) All of the above
G) B) and E)

Question 9

Growth factors that are transported through the blood play what role in the cell cycle?

Accepted Answer

A)   an internal signal that tells the cell to stop dividing and repair its DNA
B)   an internal signal that functions as an executioner
C)   an internal signal to tell the cell which stage of the cell cycle to enter next
D)   an external signal to tell the cell how long it should spend in each phase of the cell cycle
E)   an external signal to tell the cell whether or not to divideF) A) and D)
G) A) and B)

Question 10

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 D)
G) C) and D)

Question 11

There are two sets of caspases operating during apoptosis.Which of the following statements does not correctly characterize the role of these caspases?

Accepted Answer

A)   One set of caspases are called initators because they receive a signal to activate the second set.
B)   One set of capsases are called executioners because they dismantle the cell.
C)   Caspases can be unleashed by either internal or external signals.
D)   Caspases are normally active during the entire cell cycle.
E)   Caspases are responsible for the typical stages a cell goes through during apoptosis.F) A) and D)
G) D) and E)

Question 12

Which of the following best characterizes apoptosis?

Accepted Answer

A)   Apoptosis is bad for an organism.
B)   The stages of apoptosis are different in each cell type.
C)   Apoptosis happens accidentally to healthy cells.
D)   Apoptosis plays a normal role in development and cancer prevention.
E)   Apoptosis results in our going from a fertilized egg to trillions of cells.F) None of the above
G) C) and D)

Question 13

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

Accepted Answer

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

Question 14

What forms the contractile ring in animal cells?

Accepted Answer

A)   membrane vesicles
B)   actin filaments
C)   cellulose fibrils
D)   cell wall
E)   histonesF) A) and C)
G) A) and B)

Question 15

Which of the following are genetically identical?

Accepted Answer

A)   both members of a pair of chromosomes
B)   sister chromatids
C)   the mother's and the father's chromosomes
D)   the mother's and her child's chromosomes
E)   the father's and his child's chromosomesF) C) and D)
G) B) and E)

Question 16

Centrioles are absolutely necessary to the process of mitosis in all organisms.

Accepted Answer

A) True 
 B)False

Question 17

We presume that meiosis evolved later than mitosis.What process would not have to evolve in cells undergoing meiosis in order to make this transition?

Accepted Answer

A)   homologous chromosomes would have to pair up
B)   an additional division would have to occur but without a second DNA replication
C)   sister chromosomes do not separate at first anaphase; centromeres hold until second division
D)   a method of lining up single chromosomes along the metaphase plate
E)   fertilization processes to restore the diploid number in an organismF) D) and E)
G) A) and D)

Question 18

The only haploid stage in the animal life cycle is the gamete.

Accepted Answer

A) True 
 B)False

Question 19

A basic difference between spermatogenesis and oogenesis is that in oogenesis

Accepted Answer

A)   four functional eggs are produced.
B)   mitosis instead of meiosis occurs.
C)   both sperm and egg are produced.
D)   one functional egg is produced.
E)   the chromosome number is not divided in half.F) A) and D)
G) A) and E)

Question 20

Homologous chromosome are genetically identical to each other.

Accepted Answer

A) True 
 B)False

Exam 5: Cell Division

What forms the contractile ring in animal cells?

Correct AnswerverifiedShow Answer

We presume that meiosis evolved later than mitosis.What process would not have to evolve in cells undergoing meiosis in order to make this transition?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Chromosomes are attached to the spindle fibers in order to move to and from the equator.

Correct AnswerverifiedShow Answer

Homologous chromosome are genetically identical to each other.

Correct AnswerverifiedShow Answer

The genes that code for the proteins of the signaling pathway could be classified as

Correct AnswerverifiedShow Answer

Which of the following are genetically identical?

Correct AnswerverifiedShow Answer

Which is NOT a correct association?

Correct AnswerverifiedShow Answer

What is a potential outcome if one of your fathers gametes did not go through meiosis correctly and one of the chromosomes did not separate correctly?

Correct AnswerverifiedShow Answer

Which of the following best characterizes apoptosis?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The only haploid stage in the animal life cycle is the gamete.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If the diploid chromosome number is 16,the chromosome number of each gamete will be

Correct AnswerverifiedShow Answer

A basic difference between spermatogenesis and oogenesis is that in oogenesis

Correct AnswerverifiedShow Answer

There are two sets of caspases operating during apoptosis.Which of the following statements does not correctly characterize the role of these caspases?

Correct AnswerverifiedShow Answer

Following a cut or scrape,which process repairs your skin?

Correct AnswerverifiedShow Answer

During crossing-over,

Correct AnswerverifiedShow Answer

Growth factors that are transported through the blood play what role in the cell cycle?

Correct AnswerverifiedShow Answer

Centrioles are absolutely necessary to the process of mitosis in all organisms.

Correct AnswerverifiedShow Answer

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