Question 1

Multicellular organisms undergo mitotic cell division to

Accepted Answer

A)   produce new organisms.
B)   produce gametes.
C)   increase the variability of the population.
D)   increase the size of the organism.
E)   facilitate sexual reproduction.F) A) and B)
G) A) and E)

Question 2

A tumor suppressor gene undergoes a mutation that causes it to lose its normal function.What would be the most likely result of this mutation?

Accepted Answer

A)   The cell cycle halts and reverses back to the G0 stage.
B)   The cell cycle undergoes contact inhibition even when it is not surrounded by other cells.
C)   The cell cycle accelerates.
D)   The cell no longer responds to signals that cause it to stop dividing or undergo apoptosis.
E)   The cell stops dividing permanently and will never re-enter the cell cycle.F) A) and B)
G) C) and E)

Question 3

Which following pair is correctly matched?

Accepted Answer

A)   G1 phase - DNA replication
B)   G2 phase - preparation for meiosis
C)   S phase - DNA replication
D)   M phase - cell growth
E)   G0 phases - cell growthF) All of the above
G) A) and B)

Question 4

A cell is inhibited during the S phase of its cycle.It will not reproduce due to lack of

Accepted Answer

A)   ATP availability.
B)   centriole migration.
C)   centromere formation.
D)   DNA synthesis.
E)   plasma membrane structure.F) A) and D)
G) C) and E)

Question 5

During which stage of the cell cycle do the chromosomes duplicate?

Accepted Answer

A)   interphase: S
B)   interphase: G1
C)   interphase: G2
D)   prophase
E)   telophaseF) A) and B)
G) A) and C)

Question 6

Rebecca found out that she has a mass of dividing cells called a tumor in her ovaries.She has had tests and is returning to the doctor.What would the best results the doctor could tell her be?

Accepted Answer

A)   It is a benign tumor.
B)   The cells are cancerous and are in situ.
C)   It is a malignant tumor.
D)   It is malignant ovarian cancer.
E)   The tumor has metastasized and invaded neighboring tissue.F) None of the above
G) B) and D)

Question 7

Refer to the figure below.Differentiated cells,such as nerve cells,would be in which of the following stages of the cell cycle?

Accepted Answer

A)   a
B)   b
C)   c
D)   d
E)   eF) B) and D)
G) C) and D)

Question 8

Which of the following is not a characteristic of cancer cells?

Accepted Answer

A)   stimulate the growth of blood vessels
B)   travel through the bloodstream to other parts of the body
C)   exhibit contact inhibition
D)   have abnormal chromosomes
E)   produced by a mutation of a proto-oncogeneF) A) and C)
G) All of the above

Question 9

The drug chloral hydrate prevents elongation of microtubules by preventing the addition of new subunits to the growing end.During which stage of mitosis would chloral hydrate be most harmful?

Accepted Answer

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

Question 10

Apoptosis occurs when

Accepted Answer

A)   a cell lyses due to an imbalance in water uptake.
B)   white blood cells attack damaged cells and destroy them.
C)   the controls over cell division are lost and a tumor forms as the mass of cells grow.
D)   a cell with damaged DNA stops working and dies.
E)   a damaged cell is programmed to fragment and then is phagocytized.F) A) and D)
G) D) and E)

Question 11

What structure is formed by two sister chromatids being held together by a centromere?

Accepted Answer

A)   chromosome
B)   chromatin
C)   histones
D)   nucleosome
E)   DNAF) C) and D)
G) D) and E)

Question 12

A protein that promotes apoptosis would be considered a(n)

Accepted Answer

A)   oncogene.
B)   proto-oncogene.
C)   tumor suppressor.
D)   mutant tumor suppressor.
E)   signal transduction pathway protein.F) A) and B)
G) D) and E)

Question 13

Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus.The measure of DNA levels ranged from three to six picograms per nucleus.One nucleus had five picograms of DNA.What stage of the cell cycle was the nucleus in?

Accepted Answer

A)   G0
B)   G1
C)   S
D)   G2
E)   MF) A) and D)
G) B) and D)

Question 14

Which is NOT a correct association?

Accepted Answer

A)   interphase-shortest stage of the cell cycle
B)   S stage-DNA synthesis
C)   M stage-mitosis and cytokinesis
D)   G1 stage-cell grows in size and cell organelles increase in number
E)   G2 stage-metabolic preparation for mitosisF) None of the above
G) A) and B)

Question 15

Cells that do not receive the correct signals to move from G1 into S phase will enter G0 and therefore will

Accepted Answer

A)   immediately move into the mitotic phase.
B)   never be able to undergo mitosis.
C)   be able to produce gametes through meiosis.
D)   stay in an undifferentiated state and become stem cells.
E)   not undergo mitotic division unless it later receives the go ahead signal.F) A) and D)
G) C) and D)

Question 16

Cytokinesis usually,but not always,follows mitosis.If a cell undergoes mitosis and not cytokinesis,this would result in

Accepted Answer

A)   a cell with a single large nucleus.
B)   a cell with two or more nuclei.
C)   cells with abnormally small nuclei.
D)   feedback responses that prevent mitosis.
E)   death of the cell line.F) C) and D)
G) All of the above

Question 17

Nuclear division is represented in the figure below by the letter

Accepted Answer

A)   a.
B)   b.
C)   c.
D)   d.
E)   e.F) A) and B)
G) B) and E)

Question 18

Cancer will occur if one copy of a mutant tumor suppressor gene is inherited.

Accepted Answer

A) True 
 B)False

Question 19

Rick had a high incidence of cancer in his family.Four of the following five statements are preventative measures to avoid cancer.Which of the following is not correct?

Accepted Answer

A)  Increase consumption of foods rich in vitamin A and C.
B)  Avoid salt-cured,pickled,or smoked foods.
C)  Increase consumption of vegetables from the cabbage family.
D)  Avoid cigarette smoking,smokeless tobacco,and sunbathing.
E)  Avoid a high fiber,low sodium diet.F) A) and C)
G) A) and E)

Question 20

While Jeff was looking under the microscope at cells in different stages of mitosis he commented on the fact that many cells were in the same stage.If you were looking under the compound light microscope at an onion root tip,what stage would the majority of the cells be in the cell cycle?

Accepted Answer

A)   anaphase
B)   metaphase
C)   cytokinesis
D)   interphase
E)   prophaseF) A) and E)
G) A) and C)

Exam 8: Cellular Reproduction

Which following pair is correctly matched?

Correct AnswerverifiedShow Answer

What structure is formed by two sister chromatids being held together by a centromere?

Correct AnswerverifiedShow Answer

Cells that do not receive the correct signals to move from G1 into S phase will enter G0 and therefore will

Correct AnswerverifiedShow Answer

A cell is inhibited during the S phase of its cycle.It will not reproduce due to lack of

Correct AnswerverifiedShow Answer

Rick had a high incidence of cancer in his family.Four of the following five statements are preventative measures to avoid cancer.Which of the following is not correct?

Correct AnswerverifiedShow Answer

Refer to the figure below.Differentiated cells,such as nerve cells,would be in which of the following stages of the cell cycle?

Correct AnswerverifiedShow Answer

While Jeff was looking under the microscope at cells in different stages of mitosis he commented on the fact that many cells were in the same stage.If you were looking under the compound light microscope at an onion root tip,what stage would the majority of the cells be in the cell cycle?

Correct AnswerverifiedShow Answer

During which stage of the cell cycle do the chromosomes duplicate?

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Which of the following is not a characteristic of cancer cells?

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A tumor suppressor gene undergoes a mutation that causes it to lose its normal function.What would be the most likely result of this mutation?

Correct AnswerverifiedShow Answer

Which is NOT a correct association?

Correct AnswerverifiedShow Answer

Cancer will occur if one copy of a mutant tumor suppressor gene is inherited.

Correct AnswerverifiedShow Answer

Cytokinesis usually,but not always,follows mitosis.If a cell undergoes mitosis and not cytokinesis,this would result in

Correct AnswerverifiedShow Answer

Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus.The measure of DNA levels ranged from three to six picograms per nucleus.One nucleus had five picograms of DNA.What stage of the cell cycle was the nucleus in?

Correct AnswerverifiedShow Answer

The drug chloral hydrate prevents elongation of microtubules by preventing the addition of new subunits to the growing end.During which stage of mitosis would chloral hydrate be most harmful?

Correct AnswerverifiedShow Answer

Multicellular organisms undergo mitotic cell division to

Correct AnswerverifiedShow Answer

Nuclear division is represented in the figure below by the letter

Correct AnswerverifiedShow Answer

Apoptosis occurs when

Correct AnswerverifiedShow Answer

Rebecca found out that she has a mass of dividing cells called a tumor in her ovaries.She has had tests and is returning to the doctor.What would the best results the doctor could tell her be?

Correct AnswerverifiedShow Answer

A protein that promotes apoptosis would be considered a(n)

Correct AnswerverifiedShow Answer

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Cells that do not receive the correct signals to move from G₁ into S phase will enter G₀ and therefore will

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