Question 1

Which of the following is NOT true concerning mitosis?

Accepted Answer

A)  Plant cells lack centrioles while animal cells do not.
B)  Both plant and animal cells undergo cytokinesis.
C)  Mitosis allows growth and increase in size in both plants and animals.
D)  Animal cells form a cell plate during cytokinesis while plant cells do not.E) B) and D)
F) B) and C)

Question 2

In some organisms,mitosis occurs without cytokinesis.This results in:

Accepted Answer

A)  cell death
B)  a multinucleated cell
C)  cells arrested in the G0 phase
D)  cells with no nucleus
E)  uncontrolled cell divisionF) All of the above
G) A) and E)

Question 3

Which represents the correct sequence of stages in the cell cycle?

Accepted Answer

A)  G1,G2,S,M
B)  G1,G2,M,S
C)  G1,M,G2,S
D)  G1,S,G2,ME) B) and D)
F) B) and C)

Question 4

Which is NOT correctly associated with cancer?

Accepted Answer

A)  Angiogenesis forms new blood vessels and brings nutrients and oxygen to the tumor.
B)  The disorganized mass of cells is encapsulated and does not invade adjacent tissue.
C)  Metastasis establishes new tumors distant from the site of the primary tumor.
D)  Cells have receptors to adhere to basement membranes,then secrete proteinase enzymes to invade underlying tissues.E) A) and C)
F) None of the above

Question 5

Which sequence of stages in mitosis is correct?

Accepted Answer

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

Question 6

What phase of mitosis is pictured?

Accepted Answer

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

Question 7

Which statement below best describes the difference between mitosis and cytokinesis?

Accepted Answer

A)  mitosis is the portion of the cell cycle that divides the nuclear material while cytokinesis divides the cytoplasm
B)  mitosis is the portion of the cell cycle that divides the cytoplasm while cytokinesis divides the nuclear material
C)  mitosis is the portion of the cell cycle that uses a contractile ring to divide the nuclear material while cytokinesis uses the contractile ring to divide the cell membrane
D)  mitosis is the portion of the cell cycle that uses a cell plate to divide the cell membrane in plant cells while cytokinesis uses a contractile ring to divide the cell membrane in animal cellsE) All of the above
F) C) and D)

Question 8

Which of the following statements applies to mitosis but not to cytokinesis?

Accepted Answer

A)  it contains a checkpoint that will evaluate the quality of the cell
B)  requires a large amount of ATP in order for the cellular mechanisms to function
C)  if it is disrupted it can lead to an abnormal cell
D)  it results in two daughter cells that are half the size of the original cellE) None of the above
F) B) and D)

Question 9

The event that signals the start of anaphase is

Accepted Answer

A)  division of the centromeres to separate sister chromatids.
B)  migration of the centrioles to opposite poles of the nuclear space.
C)  a cleavage furrow starts to form.
D)  asters disappear.E) All of the above
F) None of the above

Question 10

are ordinarily held in check by inhibitors.

Accepted Answer

A) True 
 B)False

Question 11

Virtually all specialized cells of multicellular organisms

Accepted Answer

A)  develop through mutation from less specialized cells of the organism.
B)  contain more genetic material than less specialized cells of the same organism.
C)  contain less genetic material than less specialized cells of the same organism.
D)  have the same amount of DNA and the same number of chromosomes as all other cells of the organism and develop from the same basic stem cells.E) B) and D)
F) B) and C)

Question 12

Which statement is NOT true about eukaryotic chromosomes?

Accepted Answer

A)  There is only one chromosome of each type in each body cell.
B)  Chromosomes contain both DNA and associated histones.
C)  Chromosomes condense from chromatin at the start of mitosis.
D)  Chromosomes disperse back into chromatin at the end of mitosis.
E)  Chromosomes are not located within the nuclear envelope during mitosis.F) C) and E)
G) B) and C)

Question 13

What occurs in anaphase?

Accepted Answer

A)  Centrioles move to opposite poles.
B)  Chromosomes move to opposite poles.
C)  Chromosomes line up along the equator of the dividing cell.
D)  The nuclear envelope disappears.
E)  The nuclear envelope is constructed.F) None of the above
G) C) and D)

Question 14

What is the result of a cell not meeting the criteria to pass the G1 checkpoint?

Accepted Answer

A)  The cell cycle halts.
B)  The cell may enter the G0 stage.
C)  The cell may undergo apoptosis.
D)  All of the above.
E)  None of the above.F) B) and C)
G) A) and B)

Question 15

During which stage of the cell cycle is cell growth and replication of organelles most significant?

Accepted Answer

A)  M phase
B)  G1 phase
C)  G2 phase
D)  S phase
E)  G0 phaseF) C) and D)
G) A) and D)

Question 16

Apoptosis refers to cell death and

Accepted Answer

A)  is always biologically detrimental to an organism.
B)  is merely the accumulation of genetic errors.
C)  is any failure of the genetic machinery to work properly.
D)  is a failure in the translation or transcription mechanism.
E)  can be programmed and is essential to normal development.F) C) and E)
G) A) and E)

Question 17

Viruses and chemical exposure can cause mutations in proto-oncogenes which can lead to cancer.

Accepted Answer

A) True 
 B)False

Question 18

Which stage is most associated with a cell that is unable to divide again,such as a muscle or nerve cell?

Accepted Answer

A)  M phase
B)  G1 phase
C)  G2 phase
D)  S phase
E)  G0 phaseF) C) and D)
G) A) and E)

Question 19

Although cancer may originate in many regions of the body,many patients die from cancerous growth in the lungs,lymph glands,or liver.This is most readily explained as

Accepted Answer

A)  spreading of cancer by angiogenesis.
B)  metastasis occurring more commonly in organs that have a filter effect.
C)  proteinase enzymes making cancer particularly damaging to these tissues.
D)  growth anywhere but in these organs is called benign.
E)  due to these organs simply being more susceptible to cancer.F) A) and B)
G) B) and E)

Question 20

Which of the following is NOT true about cancer cells?

Accepted Answer

A)  They never fully differentiate.
B)  They exhibit contact inhibition.
C)  They exhibit uncontrolled growth.
D)  They exhibit disorganized growth.
E)  They may undergo metastasis.F) A) and B)
G) None of the above

Exam 9: The Cell Cycle and Cellular Reproduction

Viruses and chemical exposure can cause mutations in proto-oncogenes which can lead to cancer.

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During which stage of the cell cycle is cell growth and replication of organelles most significant?

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Virtually all specialized cells of multicellular organisms

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Which represents the correct sequence of stages in the cell cycle?

Correct AnswerverifiedShow Answer

Which of the following is NOT true about cancer cells?

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What phase of mitosis is pictured?

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Which is NOT correctly associated with cancer?

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Which stage is most associated with a cell that is unable to divide again,such as a muscle or nerve cell?

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Which statement is NOT true about eukaryotic chromosomes?

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What occurs in anaphase?

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In some organisms,mitosis occurs without cytokinesis.This results in:

Correct AnswerverifiedShow Answer

Which sequence of stages in mitosis is correct?

Correct AnswerverifiedShow Answer

Apoptosis refers to cell death and

Correct AnswerverifiedShow Answer

Although cancer may originate in many regions of the body,many patients die from cancerous growth in the lungs,lymph glands,or liver.This is most readily explained as

Correct AnswerverifiedShow Answer

What is the result of a cell not meeting the criteria to pass the G1 checkpoint?

Correct AnswerverifiedShow Answer

Which of the following is NOT true concerning mitosis?

Correct AnswerverifiedShow Answer

are ordinarily held in check by inhibitors.

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The event that signals the start of anaphase is

Correct AnswerverifiedShow Answer

Which statement below best describes the difference between mitosis and cytokinesis?

Correct AnswerverifiedShow Answer

Which of the following statements applies to mitosis but not to cytokinesis?

Correct AnswerverifiedShow Answer

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What is the result of a cell not meeting the criteria to pass the G₁ checkpoint?

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