Question 1

A benign growth is harmless.

Accepted Answer

A) True 
 B)False

Question 2

A mutated version of a virus that cannot disable the p53 gene can be used to

Accepted Answer

A)  turn off the host cell's enzymatic activities. 
B)  repair defective genes. 
C)  turn off signal cascades. 
D)  kill cancer cells. 
A)  turn off the host cell's enzymatic activities. 
B)  repair defective genes. 
C)  turn off signal cascades. 
D)  kill cancer cells.

Question 3

Rapid cell proliferation can result from

Accepted Answer

A)  contact inhibition. 
B)  a cell ignoring a negative growth regulator. 
C)  a mutation inhibiting the action of a positive growth regulator. 
D)  the surgical removal of a benign polyp. 
A)  contact inhibition. 
B)  a cell ignoring a negative growth regulator. 
C)  a mutation inhibiting the action of a positive growth regulator. 
D)  the surgical removal of a benign polyp.

Question 4

A virus can insert its genes into the DNA of the host cell, thus ensuring that all daughter cells receive a copy of the viral genes.

Accepted Answer

A) True 
 B)False

Question 5

Cancer-causing genes are known as _______.

Accepted Answer

The answer of Cancer-causing genes are known as _______....

Question 6

For cancer to form in the presence of a tumor suppressor gene, which of the following is necessary?

Accepted Answer

A)  Both copies of the tumor suppressor gene must be inactivated. 
B)  The tumor suppressor gene must be activated. 
C)  One copy of the tumor suppressor gene must be inactivated. 
D)  The tumor suppressor gene is not involved in cancer formation. 
A)  Both copies of the tumor suppressor gene must be inactivated. 
B)  The tumor suppressor gene must be activated. 
C)  One copy of the tumor suppressor gene must be inactivated. 
D)  The tumor suppressor gene is not involved in cancer formation.

Question 7

Normal cell division requires

Accepted Answer

A)  inactivated proto-oncogenes and activated tumor suppressor genes. 
B)  inactivated proto-oncogenes and inactivated tumor suppressor genes. 
C)  activated proto-oncogenes and activated tumor suppressor genes. 
D)  activated proto-oncogenes and inactivated tumor suppressor genes. 
A)  inactivated proto-oncogenes and activated tumor suppressor genes. 
B)  inactivated proto-oncogenes and inactivated tumor suppressor genes. 
C)  activated proto-oncogenes and activated tumor suppressor genes. 
D)  activated proto-oncogenes and inactivated tumor suppressor genes.

Question 8

_______ cancers spread throughout the body, with life-threatening consequences.

Accepted Answer

The answer of _______ cancers spread throughout the body, with...

Question 9

This diagram shows the two states in which the Rb protein is found in the cell.  
In which state would you find the Rb protein in a cell that needs to undergo rapid cell division?

Accepted Answer

A)  State A 
B)  State B 
C)  Neither, Rb is not involved in cell division. 
D)  A portion of the Rb protein in the cell must be in each state. 
A)  State A 
B)  State B 
C)  Neither, Rb is not involved in cell division. 
D)  A portion of the Rb protein in the cell must be in each state.

Question 10

A pesticide was found to cause cancer in laboratory mice. Which of the following would be the most reasonable hypothesis to pursue?

Accepted Answer

A)  The pesticide mutates an oncogene to a proto-oncogene. 
B)  The pesticide mutates both oncogenes to proto-oncogenes. 
C)  The pesticide mutates one oncogene to a proto-oncogene and one tumor suppressor gene to an inactive form. 
D)  The pesticide mutates both tumor suppressor genes to inactive forms. 
A)  The pesticide mutates an oncogene to a proto-oncogene. 
B)  The pesticide mutates both oncogenes to proto-oncogenes. 
C)  The pesticide mutates one oncogene to a proto-oncogene and one tumor suppressor gene to an inactive form. 
D)  The pesticide mutates both tumor suppressor genes to inactive forms.

Question 11

In order to be healthy, an organism must stop all cell division activities.

Accepted Answer

A) True 
 B)False

Question 12

The Rb protein inhibits

Accepted Answer

A)  a gene that promotes cell division. 
B)  a protein that promotes cell division. 
C)  the reproduction of a cancer causing virus. 
D)  a protein that inhibits cell division. 
A)  a gene that promotes cell division. 
B)  a protein that promotes cell division. 
C)  the reproduction of a cancer causing virus. 
D)  a protein that inhibits cell division.

Question 13

Which of the following statements about viruses is false?

Accepted Answer

A)  Viruses can cause cancer. 
B)  Viruses can be used to destroy cancer cells. 
C)  Viruses do not contain a nucleic acid. 
D)  Viruses take over a cell's machinery in order to reproduce. 
A)  Viruses can cause cancer. 
B)  Viruses can be used to destroy cancer cells. 
C)  Viruses do not contain a nucleic acid. 
D)  Viruses take over a cell's machinery in order to reproduce.

Question 14

One or two mutations are often the cause of cancer.

Accepted Answer

A) True 
 B)False

Question 15

Adducts are most likely to lead to cancer in cells

Accepted Answer

A)  that have a long cell cycle. 
B)  that have a short cell cycle. 
C)  in G0. 
D)  undergoing meiosis. 
A)  that have a long cell cycle. 
B)  that have a short cell cycle. 
C)  in G0. 
D)  undergoing meiosis.

Question 16

Examine the graph below.  
This graph shows that

Accepted Answer

A)  people over the age of 45 are more likely to smoke cigarettes than those between 18 and 24 years of age. 
B)  nonstudents are more likely to use most forms of tobacco than college students. 
C)  students enrolled in college part time are unlikely to smoke cigars. 
D)  college students who use tobacco are more likely to get cancer. 
A)  people over the age of 45 are more likely to smoke cigarettes than those between 18 and 24 years of age. 
B)  nonstudents are more likely to use most forms of tobacco than college students. 
C)  students enrolled in college part time are unlikely to smoke cigars. 
D)  college students who use tobacco are more likely to get cancer.

Question 17

The p53 protein is critical to the regulation of the cell cycle because it

Accepted Answer

A)  halts cell division when necessary, allowing the cell to repair damaged DNA 
B)  causes cells with heavily damaged, un-repairable DNA to commit "suicide." 
C)  prevents the cell from dividing at inappropriate times 
D)  all of the above 
A)  halts cell division when necessary, allowing the cell to repair damaged DNA 
B)  causes cells with heavily damaged, un-repairable DNA to commit "suicide." 
C)  prevents the cell from dividing at inappropriate times 
D)  all of the above

Question 18

Cancer-causing chemicals increase the risk of cancer by promoting _______ in the DNA, causing changes in the DNA base sequences.

Accepted Answer

The answer of Cancer-causing chemicals increase the risk of cancer...

Question 19

An overactive viral protein _______ can turn on signal cascades in a host, thus leading to cancer.

Accepted Answer

The answer of An overactive viral protein _______ can turn...

Question 20

Peyton Rous's experiments with chicken tumors led to the discovery that

Accepted Answer

A)  chickens are immune to cancer. 
B)  cancer cannot be transferred from one chicken to another. 
C)  bacteria can cause cancer. 
D)  viruses can cause cancer. 
A)  chickens are immune to cancer. 
B)  cancer cannot be transferred from one chicken to another. 
C)  bacteria can cause cancer. 
D)  viruses can cause cancer.

Exam 40: Cancer: Cell Division Out of Control

A benign growth is harmless.

A mutated version of a virus that cannot disable the p53 gene can be used to

Rapid cell proliferation can result from

A virus can insert its genes into the DNA of the host cell, thus ensuring that all daughter cells receive a copy of the viral genes.

Cancer-causing genes are known as _______.

For cancer to form in the presence of a tumor suppressor gene, which of the following is necessary?

Normal cell division requires

_______ cancers spread throughout the body, with life-threatening consequences.

This diagram shows the two states in which the Rb protein is found in the cell. In which state would you find the Rb protein in a cell that needs to undergo rapid cell division?

A pesticide was found to cause cancer in laboratory mice. Which of the following would be the most reasonable hypothesis to pursue?

In order to be healthy, an organism must stop all cell division activities.

The Rb protein inhibits

Which of the following statements about viruses is false?

One or two mutations are often the cause of cancer.

Adducts are most likely to lead to cancer in cells

Examine the graph below. This graph shows that

The p53 protein is critical to the regulation of the cell cycle because it

Cancer-causing chemicals increase the risk of cancer by promoting _______ in the DNA, causing changes in the DNA base sequences.

An overactive viral protein _______ can turn on signal cascades in a host, thus leading to cancer.

Peyton Rous's experiments with chicken tumors led to the discovery that

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

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