Question 1

During which phase of mitosis are the sister chromatids separated and consequently become daughter chromosomes?

Accepted Answer

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

Question 2

A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA in the nucleus. Those cells would have ________ picograms at the end of the S phase and ________ picograms at the end of G 2.

Accepted Answer

A)   8; 8
B)   8; 16
C)   16; 8
D)   16; 16
E)   12; 16F) A) and B)
G) All of the above

Question 3

Which of the following is characteristic of cancer cells?

Accepted Answer

A)   cells that have lost contact inhibition
B)   cells with abnormal nuclei
C)   cells that lack differentiation
D)   cells that have uncontrolled cell division
E)   All of the above are characteristics of cancer cells.F) A) and C)
G) C) and D)

Question 4

Which items in the following pairs are correctly matched?

Accepted Answer

A)   G 1 phase - DNA replication
B)   G 2 phase - organelle replication
C)   S phase - DNA replication
D)   M phase - cell growth
E)   G 0 phase - cell growthF) A) and C)
G) A) and B)

Question 5

Ben was looking at onion root tip cells under the microscope in biology class. He saw one cell that had two nuclei within it. What stage of the cell cycle was this cell in?

Accepted Answer

A)   anaphase
B)   interphase
C)   metaphase
D)   prophase
E)   telophase/cytokinesisF) A) and B)
G) A) and C)

Question 6

Which of the following is 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)   have abnormal chromosomes
D)   produced by a mutation of a proto-oncogene
E)   All of the above answers are characteristics of cancer cells.F) A) and D)
G) A) and B)

Question 7

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

Question 8

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 C)
G) All of the above

Question 9

Unicellular organisms undergo mitotic division to

Accepted Answer

A)   repair damaged cells.
B)   increase the size of the organism.
C)   produce new organisms.
D)   increase the genetic variability of the population.
E)   produce gametes.F) A) and B)
G) A) and C)

Question 10

Cancer occurs when

Accepted Answer

A)   cells are unable to divide because of a mutation.
B)   faulty spindle fibers are unable to pull chromatids apart.
C)   apoptosis occurs.
D)   the DNA of a cell becomes mutated.
E)   the regulation of the cell cycle is lost and uncontrolled cell division occurs.F) A) and C)
G) C) and D)

Question 11

Which of the following organelles would be abundant and in close proximity to the cell plate in a plant cell undergoing cytokinesis?

Accepted Answer

A)   centrioles
B)   Golgi apparatus
C)   rough endoplasmic reticulum
D)   lysosomes
E)   central vacuoleF) None of the above
G) A) and B)

Question 12

What would occur in a cell if the production of cyclins halted during the cell cycle?

Accepted Answer

A)   the cell would continue to divide indefinitely
B)   organelles would not be duplicated in G 1
C)   the cell would not complete cytokinesis
D)   the cell would enter the G 0 phase
E)   the cell would remain in the G 2 phase and would not enter into mitosisF) A) and D)
G) B) and D)

Question 13

Stem cells that contain telomerase can be found in adults.

Accepted Answer

A) True 
 B)False

Question 14

A translocation may lead to cancer if it

Accepted Answer

A)   disrupts control of expression of genes that regulate the cell cycle.
B)   deletes the telomere of the chromosome.
C)   moves genes from one chromosome to another.
D)   activates tumor suppressor genes.
E)   affects both tumor suppressor and proto-oncogenes.F) None of the above
G) B) and C)

Question 15

Susan was examining a cell under the microscope and noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite poles of the cell. The cell under examination was most likely a(n)

Accepted Answer

A)   animal cell in the M phase of the cell cycle.
B)   dividing bacterial cell.
C)   plant cell undergoing cytokinesis.
D)   animal cell undergoing cytokinesis.
E)   plant cell in the anaphase stage.F) B) and D)
G) A) and E)

Question 16

Translocations can lead to cancer if they disrupt the genes that regulate the cell cycle.

Accepted Answer

A) True 
 B)False

Question 17

How do the daughter cells at the end of mitosis and cytokinesis compare to their parent cell when it was in G 1 of the cell cycle?

Accepted Answer

A)   The daughter cells have half the amount of cytoplasm and half the amount of DNA.
B)   The daughter cells have half the number of chromosomes and half the amount of DNA.
C)   The daughter cells have the same number of chromosomes and half the amount of DNA.
D)   The daughter cells have the same number of chromosomes and the same amount of DNA.
E)   The daughter cells have the same number of chromosomes and twice the amount of DNA.F) B) and C)
G) All of the above

Question 18

Apoptosis

Accepted Answer

A)   is a process that repairs damaged DNA.
B)   occurs as telomeres increase in length.
C)   can be used to remove damaged or malfunctioning cells.
D)   increases the number of somatic cells.
E)   increases the number of gamete cells.F) A) and E)
G) B) and D)

Question 19

Cells that do not receive the correct signals to move from G 1 into S phase will enter G 0 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) D) and E)
G) B) and C)

Question 20

Plant cells and animal cells differ in cytokinesis because

Accepted Answer

A)   plant cells need to build a cell wall, while animal cells do not.
B)   animal cells need to build a cell wall, while plant cells do not.
C)   animal cells need to build a cell membrane, while plant cells do not.
D)   animal cells are living, while plant cells are not.
E)   plant cells divide by mitosis, while animal cells divide by meiosis.F) C) and D)
G) B) and C)

Exam 8: Cellular Reproduction

A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA in the nucleus. Those cells would have ________ picograms at the end of the S phase and ________ picograms at the end of G 2.

Correct AnswerverifiedShow Answer

Cancer occurs when

Correct AnswerverifiedShow Answer

Unicellular organisms undergo mitotic division to

Correct AnswerverifiedShow Answer

Stem cells that contain telomerase can be found in adults.

Correct AnswerverifiedShow Answer

How do the daughter cells at the end of mitosis and cytokinesis compare to their parent cell when it was in G 1 of the cell cycle?

Correct AnswerverifiedShow Answer

What would occur in a cell if the production of cyclins halted during the cell cycle?

Correct AnswerverifiedShow Answer

Which items in the following pairs are correctly matched?

Correct AnswerverifiedShow Answer

Cells that do not receive the correct signals to move from G 1 into S phase will enter G 0 and therefore will

Correct AnswerverifiedShow Answer

Ben was looking at onion root tip cells under the microscope in biology class. He saw one cell that had two nuclei within it. What stage of the cell cycle was this cell in?

Correct AnswerverifiedShow Answer

Apoptosis

Correct AnswerverifiedShow Answer

Translocations can lead to cancer if they disrupt the genes that regulate the cell cycle.

Correct AnswerverifiedShow Answer

Which of the following is characteristic of cancer cells?

Correct AnswerverifiedShow Answer

Which of the following is a characteristic of cancer cells?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following organelles would be abundant and in close proximity to the cell plate in a plant cell undergoing cytokinesis?

Correct AnswerverifiedShow Answer

Susan was examining a cell under the microscope and noticed the formation of a cell plate in the midline of the cell and the formation of nuclei at opposite poles of the cell. The cell under examination was most likely a(n)

Correct AnswerverifiedShow Answer

A translocation may lead to cancer if it

Correct AnswerverifiedShow Answer

Plant cells and animal cells differ in cytokinesis because

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

During which phase of mitosis are the sister chromatids separated and consequently become daughter chromosomes?

Correct AnswerverifiedShow Answer

A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA in the nucleus. Those cells would have picograms at the end of the S phase and picograms at the end of G ₂.

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How do the daughter cells at the end of mitosis and cytokinesis compare to their parent cell when it was in G ₁ of the cell cycle?

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Cells that do not receive the correct signals to move from G ₁ into S phase will enter G ₀ and therefore will

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