Question 1

It is the secondary oocyte and not the egg that the sperm fertilizes to form a diploid organism.

Accepted Answer

A) True 
 B)False

Question 2

You are looking at chromosome 1 in a human being.Assuming there is no crossing over,what is the source of all the genes on this chromosome?

Accepted Answer

A)  mother
B)  father
C)  either the mother or father
D)  a combination of both mother and father
E)  it is impossible to tell given this informationF) B) and C)
G) D) and E)

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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 5

Which of the following is not true concerning the checkpoints in the cell cycle?

Accepted Answer

A)  Mitosis stops if chromosomes are not properly aligned.
B)  Mitosis will not occur if DNA is damaged or not replicated.
C)  If DNA is damaged,apoptosis may occur.
D)  The first checkpoint is located in the S phase of interphase.
E)  Cyclins must be present at certain stages to advance to the next stage.F) C) and D)
G) B) and D)

Question 6

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)  telophase.F) A) and C)
G) D) and E)

Question 7

An organism has 8 pairs of chromosomes.If the sperm and egg did not undergo meiosis,how many chromosomes would be present in a cell that resulted from the fusion of a sperm and egg?

Accepted Answer

A)  8
B)  16
C)  24
D)  32
E)  64F) A) and B)
G) D) and E)

Question 8

During which phase will homologous chromosomes separate?

Accepted Answer

A)  anaphase I
B)  anaphase II
C)  prophase
D)  anaphase
E)  metaphase IF) None of the above
G) B) and E)

Question 9

In plant cells,what is responsible for organizing the spindle?

Accepted Answer

A)  centrosomes
B)  centrioles
C)  microtubules
D)  asters
E)  centromeresF) None of the above
G) B) and C)

Question 10

Which of the following descriptions does not occur during apoptosis?

Accepted Answer

A)  cell rounds up
B)  cells lose contact with neighbors
C)  nucleus fragments
D)  DNA is duplicated
E)  plasma membrane develops blistersF) A) and B)
G) C) and E)

Question 11

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) C) and E)
G) D) and E)

Question 12

The formation of sperm gametes is termed

Accepted Answer

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

Question 13

The chromatids are held together at a region called the centromere.

Accepted Answer

A) True 
 B)False

Question 14

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 15

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

Accepted Answer

A) True 
 B)False

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

What is the difference between the chromosomes in a secondary spermatocyte and those in a spermatid?

Accepted Answer

A)  the chromosomes in secondary spermatocytes consist of two chromatids,the ones in the spermatid consist of only one chromatid
B)  the chromosomes in a secondary spermatocyte consist of homologous chromosomes,the ones in the spermatid consist of two chromatids
C)  the chromosomes in the secondary spermatocyte consist of one chromatid,the ones in the spermatid consist of two chromatids
D)  the secondary spermatocyte is diploid,the spermatid is haploid
E)  the secondary spermatocyte is haploid,the spermatid is diploidF) B) and C)
G) All of the above

Question 18

Which type of genes,when abnormally activated so that protein is always present and active,can result in cancer?

Accepted Answer

A)  tumor suppressor genes
B)  initator caspase genes
C)  proto-oncogenes
D)  DNA repair protein genes
E)  executioner caspase genesF) B) and E)
G) A) and C)

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

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) A) and C)
G) B) and C)

Exam 5: Cell Division

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

Correct AnswerverifiedShow Answer

The chromatids are held together at a region called the centromere.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

It is the secondary oocyte and not the egg that the sperm fertilizes to form a diploid organism.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The formation of sperm gametes is termed

Correct AnswerverifiedShow Answer

During which phase will homologous chromosomes separate?

Correct AnswerverifiedShow Answer

Which of the following descriptions does not occur during apoptosis?

Correct AnswerverifiedShow Answer

You are looking at chromosome 1 in a human being.Assuming there is no crossing over,what is the source of all the genes on this chromosome?

Correct AnswerverifiedShow Answer

Which type of genes,when abnormally activated so that protein is always present and active,can result in cancer?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the difference between the chromosomes in a secondary spermatocyte and those in a spermatid?

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

Which of the following is not true concerning the checkpoints in the cell cycle?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In plant cells,what is responsible for organizing the spindle?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An organism has 8 pairs of chromosomes.If the sperm and egg did not undergo meiosis,how many chromosomes would be present in a cell that resulted from the fusion of a sperm and egg?

Correct AnswerverifiedShow Answer

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