Question 1

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 stageF) A) and D)
G) A) and E)

Question 2

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 B)
G) C) and E)

Question 3

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 B)
G) B) and C)

Question 4

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

Accepted Answer

A)   cells that have lost contact inhibition
B)   cells with abnormal nuclei
C)   cells which function normally for tissue they are in
D)   cells that lack differentiation
E)   Cells that have uncontrolled cell divisionF) D) and E)
G) B) and D)

Question 5

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 B)
G) A) and C)

Question 6

A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA nucleus. Those cells would have _____ picograms at the end of the S phase and _____ picograms at the end of G2.

Accepted Answer

A)   8; 8
B)   8; 16
C)   16; 8
D)   16; 16
E)   12; 16F) B) and E)
G) A) and B)

Question 7

Which of the following statements is correct regarding the events of the cell cycle?

Accepted Answer

A)   DNA is duplicated during the G1 and G2 phases.
B)   DNA replicates during cytokinesis.
C)   The M phase is usually the longest phase.
D)   Interphase consists of G1, S, and G2.
E)   The cell stops growing in G2 phase.F) A) and B)
G) B) and E)

Question 8

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 visibleF) None of the above
G) C) and E)

Question 9

The figure below shows a cell in the mitotic stage of ________.

Accepted Answer

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

Question 10

Place the stages of mitosis in the correct order.

Accepted Answer

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

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) A) and E)
G) None of the above

Question 12

The figure below shows a cell in the mitotic stage of ________.

Accepted Answer

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

Question 13

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 D)
G) B) and C)

Question 14

Some multicellular organisms, like the hydra, use asexual reproduction to produce a bud that leads to a new organism. This means that they are using

Accepted Answer

A)   binary fission to create new cells.
B)   using mitotic division to create new cells that become a new organism.
C)   using meiosis to create new cells that become a new organism.
D)   using mitotic division to gametes that give rise to a new organism.
E)   using meiosis I only to give rise to new organisms.F) B) and C)
G) A) and B)

Question 15

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) B) and C)
G) C) and D)

Question 16

Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. Which of the following statements explains why this occurs?

Accepted Answer

A)   The cells become deficient in cyclin.
B)   The petri dish inhibits the cells growth.
C)   Cell division can be inhibited by the proximity of other cells of the same type, a process called contact inhibition.
D)   Most cells grown in petri dishes have gone through apoptosis.
E)   The cells have differentiated into more specialized cells.F) A) and E)
G) C) and E)

Question 17

Susan went to an oncologist because some cancerous cells had been detected within her breast tissue. Which of the following is NOT a warning signal for cancer?

Accepted Answer

A)   The cells in the breast tissue lacked differentiation.
B)   Some cells in the tissue had failed to acquire the specialized structure that the cell should have.
C)   Some cells had abnormally large nuclei.
D)   The cells had an abnormal number of chromosomes.
E)   Some cells were found going through the cell cycle.F) B) and E)
G) C) and D)

Question 18

All of the following statements are true about mitosis except

Accepted Answer

A)   the cells arising from the process are genetically alike.
B)   the process of mitosis is followed by cytokinesis.
C)   spindle fibers are involved in the movement of chromosomes.
D)   both sexually and asexually reproducing organisms utilize the process of mitosis.
E)   the cells arising from the process all have half of the genetic material.F) B) and C)
G) C) and D)

Question 19

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)   both uncontrolled cell division and stimulation of apoptosis occurs.
E)   the regulation of the cell cycle is lost and uncontrolled cell division occurs.F) C) and D)
G) None of the above

Question 20

Cancer is a disorder in which some cells have lost the ability to control their ________.

Accepted Answer

A)   size
B)   spindle fibers
C)   growth rate
D)   surface area
E)   volumeF) A) and B)
G) None of the above

Exam 8: Cellular Reproduction

The figure below shows a cell in the mitotic stage of ________.

Correct AnswerverifiedShow Answer

The figure below shows a cell in the mitotic stage 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

Place the stages of mitosis in the correct order.

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

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

All of the following statements are true about mitosis except

Correct AnswerverifiedShow Answer

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

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

Cancer occurs when

Correct AnswerverifiedShow Answer

Which of the following statements is correct regarding the events of the cell cycle?

Correct AnswerverifiedShow Answer

Some multicellular organisms, like the hydra, use asexual reproduction to produce a bud that leads to a new organism. This means that they are using

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

Cancer is a disorder in which some cells have lost the ability to control their ________.

Correct AnswerverifiedShow Answer

When during the cell cycle are chromosomes visible?

Correct AnswerverifiedShow Answer

Apoptosis ________.

Correct AnswerverifiedShow Answer

Susan went to an oncologist because some cancerous cells had been detected within her breast tissue. Which of the following is NOT a warning signal for cancer?

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 group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA nucleus. Those cells would have _____ picograms at the end of the S phase and _____ picograms at the end of G2.

Correct AnswerverifiedShow Answer

Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. Which of the following statements explains why this occurs?

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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A group of cells is assayed for DNA content immediately following mitosis and is found to have an average of 8 picograms of DNA nucleus. Those cells would have _ picograms at the end of the S phase and _ picograms at the end of G₂.

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