Question 1

Embryonic cells and cancer cells are similar because

Accepted Answer

A)   DNA polymerase is inactive.
B)   telomerase is active.
C)   telomerase is inactive.
D)   RNA polymerase is inactive.
E)   proto-oncogenes are inactive.F) A) and B)
G) A) and C)

Question 2

When during the cell cycle are chromosomes visible?

Accepted Answer

A)   only during interphase
B)   only when they are being copied
C)   during mitosis
D)   only during the G1 phase
E)   Chromosomes are always visible.F) B) and C)
G) C) and D)

Question 3

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

Question 4

Inheritance of mutant forms of some genes may lead to a predisposition to develop cancer. Which of the genes listed below has not been linked to hereditary forms of cancer?

Accepted Answer

A)   BRCA1
B)   RB
C)   RET
D)   RAS
E)   DScamF) A) and E)
G) A) and D)

Question 5

Which of the following represents the phases of mitosis in their proper sequence?

Accepted Answer

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

Question 6

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) All of the above
G) A) and D)

Question 7

The spindle serves two roles in mitotic cell division. These are to separate the

Accepted Answer

A)   sister chromatids and to elongate the cell.
B)   non-sister chromatids and then the homologous chromosomes.
C)   sister chromatids and then the non-sister chromatids.
D)   sister chromatids and then form the cleavage furrow.
E)   homologous chromosomes and then form the cleavage furrow.F) All of the above
G) C) and D)

Question 8

Which lifestyle choice is responsible for 90% of the cases of lung cancer among men?

Accepted Answer

A)   smoking
B)   using tanning beds
C)   excessive alcohol consumption
D)   drug use
E)   using smokeless tobaccoF) A) and B)
G) A) and C)

Question 9

Nuclear division is represented in the figure below by the letter

Accepted Answer

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

Question 10

When a portion of a chromosome breaks off and attaches to a different chromosome, this is called a

Accepted Answer

A)   translocation.
B)   telomerase.
C)   apoptosis event.
D)   suppressor event.
E)   jumping gene.F) B) and C)
G) A) and E)

Question 11

The structures labeled "d" in the following figure are called

Accepted Answer

A)   centromeres.
B)   centrioles.
C)   sister chromatids.
D)   spindles.
E)   non-sister chromatids.F) None of the above
G) All of the above

Question 12

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

Accepted Answer

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

Question 13

Proto-oncogenes function by preventing cells from dividing uncontrollably.

Accepted Answer

A) True 
 B)False

Question 14

Some of the drugs used in chemotherapy work by

Accepted Answer

A)   increasing telomeres.
B)   preventing spindle formation.
C)   producing kinases.
D)   inhibiting cytokinesis.
E)   causing cells to divide quickly.F) A) and E)
G) A) and D)

Question 15

If cancer is discovered at an early stage, which treatment method is most often used?

Accepted Answer

A)   surgery
B)   radiation
C)   chemotherapy
D)   hormonal therapy
E)   drug therapyF) A) and C)
G) A) and B)

Question 16

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) B) and E)
G) B) and C)

Question 17

The figure below shows a cell in the mitotic stage of

Accepted Answer

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

Question 18

Angiogenesis contributes to carcinogenesis because it

Accepted Answer

A)   allows tumor cells to spread to other parts of the body.
B)   causes blood vessels to grow into the tumor.
C)   allows tumor cells to invade underlying tissues.
D)   causes additional mutations to occur in tumor cells.
E)   causes apoptosis in tumor cells.F) C) and E)
G) B) and E)

Question 19

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 loses 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) B) and D)
G) A) and C)

Question 20

Which items in the following pairs are 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 E)

Exam 8: Cellular Reproduction

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

Correct AnswerverifiedShow Answer

Which lifestyle choice is responsible for 90% of the cases of lung cancer among men?

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The figure below shows a cell in the mitotic stage of

Correct AnswerverifiedShow Answer

The spindle serves two roles in mitotic cell division. These are to separate the

Correct AnswerverifiedShow Answer

If cancer is discovered at an early stage, which treatment method is most often used?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Embryonic cells and cancer cells are similar because

Correct AnswerverifiedShow Answer

Nuclear division is represented in the figure below by the letter

Correct AnswerverifiedShow Answer

When a portion of a chromosome breaks off and attaches to a different chromosome, this is called a

Correct AnswerverifiedShow Answer

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

The structures labeled "d" in the following figure are called

Correct AnswerverifiedShow Answer

Some of the drugs used in chemotherapy work by

Correct AnswerverifiedShow Answer

Angiogenesis contributes to carcinogenesis because it

Correct AnswerverifiedShow Answer

Which of the following represents the phases of mitosis in their proper sequence?

Correct AnswerverifiedShow Answer

When during the cell cycle are chromosomes visible?

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

Which items in the following pairs are correctly matched?

Correct AnswerverifiedShow Answer

Proto-oncogenes function by preventing cells from dividing uncontrollably.

Correct AnswerverifiedShow Answer

Inheritance of mutant forms of some genes may lead to a predisposition to develop cancer. Which of the genes listed below has not been linked to hereditary forms of cancer?

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

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

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