Question 1

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) All of the above
G) B) and C)

Question 2

A proto-oncogene differs from a tumor suppressor gene because a proto-oncogene

Accepted Answer

A)   may cause cancer if mutated, whereas a tumor suppressor gene cannot.
B)   stimulates mitosis in a normal cell, whereas a tumor suppressor gene inhibits mitosis.
C)   only activates enzymes in a cell that allow metastasis.
D)   inhibits the cell cycle, whereas a tumor suppressor accelerates the cell cycle.
E)   promotes meiosis, whereas a tumor suppressor gene promotes mitosis.F) None of the above
G) B) and C)

Question 3

If cells in the process of dividing are subjected to colchicines,a drug that interferes with the functioning of the spindle fibers,at which stage will mitosis be arrested?

Accepted Answer

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

Question 4

The structure labeled "c" in the following figure is called the

Accepted Answer

A)   centromere.
B)   centriole.
C)   sister chromatid.
D)   spindle.
E)   non-sister chromatid.F) D) and E)
G) All of the above

Question 5

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

Question 6

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

Question 7

In order for a person to develop properly their cells must eventually go through apoptosis?

Accepted Answer

A) True 
 B)False

Question 8

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

Question 9

Which cancer therapy can lead to side effects such as nausea and hair loss?

Accepted Answer

A)   chemotherapy
B)   surgery
C)   hormonal therapy
D)   drug therapy
E)   All of these can lead to nausea and hair loss.F) A) and C)
G) C) and D)

Question 10

If tumor cells have a faulty,non-functional proteinase,they will be unable to undergo which of the following processes?

Accepted Answer

A)   mitosis
B)   mutations
C)   metastasis
D)   apoptosis
E)   angiogenesisF) A) and B)
G) C) and D)

Exam 8: Cellular Reproduction

If tumor cells have a faulty,non-functional proteinase,they will be unable to undergo which of the following processes?

Correct Answer
verified

If cells in the process of dividing are subjected to colchicines,a drug that interferes with the functioning of the spindle fibers,at which stage will mitosis be arrested?

Correct Answer
verified

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 Answer
verified

A proto-oncogene differs from a tumor suppressor gene because a proto-oncogene

Correct Answer
verified

The structure labeled "c" in the following figure is called the

Correct Answer
verified

Which cancer therapy can lead to side effects such as nausea and hair loss?

Correct Answer
verified

In order for a person to develop properly their cells must eventually go through apoptosis?

Correct Answer
verified

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

Correct Answer
verified

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 Answer
verified

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 Answer
verified

Exam 8: Cellular Reproduction

If tumor cells have a faulty,non-functional proteinase,they will be unable to undergo which of the following processes?

Correct AnswerverifiedShow Answer

If cells in the process of dividing are subjected to colchicines,a drug that interferes with the functioning of the spindle fibers,at which stage will mitosis be arrested?

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

A proto-oncogene differs from a tumor suppressor gene because a proto-oncogene

Correct AnswerverifiedShow Answer

The structure labeled "c" in the following figure is called the

Correct AnswerverifiedShow Answer

Which cancer therapy can lead to side effects such as nausea and hair loss?

Correct AnswerverifiedShow Answer

In order for a person to develop properly their cells must eventually go through apoptosis?

Correct AnswerverifiedShow Answer

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

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

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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 Answer
verified

Correct Answer
verified