Question 1

In the future viruses may cure as well as cause cancer.

Accepted Answer

A) True 
 B)False  True

Question 2

A tumor that has gained the ability to spread throughout the body, generally with life-threatening consequences, is known as a _______ tumor.

Accepted Answer

A)  benign 
B)  polyp 
C)  malignant 
D)  growth-promoting 
A)  benign 
B)  polyp 
C)  malignant 
D)  growth-promoting C

Question 3

If a cell's p53 genes are inactivated, the cell

Accepted Answer

A)  loses control over cell division. 
B)  stops dividing. 
C)  no longer makes proto-oncogenes. 
D)  activates tumor suppressors. 
A)  loses control over cell division. 
B)  stops dividing. 
C)  no longer makes proto-oncogenes. 
D)  activates tumor suppressors. A

Question 4

The mutation of p53 generally results in the formation of a malignant tumor.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is not true of cancer?

Accepted Answer

A)  Cancer involves cell proliferation. 
B)  Cancer can be caused by viruses. 
C)  Cancer results from a balanced production of positive and negative growth regulators. 
D)  Cancer involves the loss of a cell's ability to control cell division. 
A)  Cancer involves cell proliferation. 
B)  Cancer can be caused by viruses. 
C)  Cancer results from a balanced production of positive and negative growth regulators. 
D)  Cancer involves the loss of a cell's ability to control cell division.

Question 6

_______ starts with a single cell that loses its ability to control cell division.

Accepted Answer

The answer of _______ starts with a single cell that...

Question 7

A harmless proliferation of cells in a human colon would be called a(n) ________ polyp.

Accepted Answer

The answer of A harmless proliferation of cells in a...

Question 8

A _______ is a harmless growth that may occur in the colon, for example, without being cancerous.

Accepted Answer

The answer of A _______ is a harmless growth that...

Question 9

Phosphorylation resulting from the influence of a growth factor

Accepted Answer

A)  causes the Rb protein to release its target protein. 
B)  inhibits the target gene of the Rb protein. 
C)  turns the Rb protein into an energy-carrying molecule needed for cell division. 
D)  causes its target protein to become inactive. 
A)  causes the Rb protein to release its target protein. 
B)  inhibits the target gene of the Rb protein. 
C)  turns the Rb protein into an energy-carrying molecule needed for cell division. 
D)  causes its target protein to become inactive.

Question 10

The cancer retinoblastoma occurs as a result of the absence of the _____ gene.

Accepted Answer

The answer of The cancer retinoblastoma occurs as a result...

Question 11

People who quit smoking live longer than those who don't quit smoking.

Accepted Answer

A) True 
 B)False

Question 12

Why was a version of Rous's virus that did not cause cancer important to our understanding of how viruses cause cancer?

Accepted Answer

A)  This discovery showed that viruses do not actually cause cancer. 
B)  The existence of another version of the virus proved that viruses also cause cancer in humans. 
C)  The genes in the newly discovered virus were the first known tumor suppressor genes. 
D)  Comparison of the different versions of the virus indicated which genes in the virus caused cancer. 
A)  This discovery showed that viruses do not actually cause cancer. 
B)  The existence of another version of the virus proved that viruses also cause cancer in humans. 
C)  The genes in the newly discovered virus were the first known tumor suppressor genes. 
D)  Comparison of the different versions of the virus indicated which genes in the virus caused cancer.

Question 13

Which of the following is not likely to cause a cell to become cancerous?

Accepted Answer

A)  mutation 
B)  meiosis 
C)  chemical pollutants 
D)  cigarette smoke 
A)  mutation 
B)  meiosis 
C)  chemical pollutants 
D)  cigarette smoke

Question 14

The addition of a phosphate group to a protein activate the protein by causing it to change its ___________.

Accepted Answer

The answer of The addition of a phosphate group to...

Question 15

If exposure to sunlight causes a mutation in a single proto-oncogene in a diploid cell so that it becomes hyperactive,

Accepted Answer

A)  the remaining un-mutated proto-oncogene will prevent the cell from becoming cancerous. 
B)  tumor suppressor cells will destroy the proteins made from the mutated gene. 
C)  the cell might produce a protein that pushes it into rapid cell division. 
D)  the mutated gene will be inactivated by phosphorylation. 
A)  the remaining un-mutated proto-oncogene will prevent the cell from becoming cancerous. 
B)  tumor suppressor cells will destroy the proteins made from the mutated gene. 
C)  the cell might produce a protein that pushes it into rapid cell division. 
D)  the mutated gene will be inactivated by phosphorylation.

Question 16

Tumor suppressor proteins

Accepted Answer

A)  produce growth factor signal cascades. 
B)  remove growth factors from DNA. 
C)  inactivate components of growth factor signal cascades. 
D)  are produced by growth factors. 
A)  produce growth factor signal cascades. 
B)  remove growth factors from DNA. 
C)  inactivate components of growth factor signal cascades. 
D)  are produced by growth factors.

Question 17

In order for a virus to reproduce, it must insert its DNA into the host cell's genome. How might this cause cancer in the host?

Accepted Answer

A)  The viral DNA could insert a gene that controls cell division into the host's DNA. 
B)  Because the host cell is much smaller than the virus, the host cell must expand until it becomes a tumor large enough to hold the virus. 
C)  The virus could turn off an oncogene. 
D)  Viruses cannot cause cancer. 
A)  The viral DNA could insert a gene that controls cell division into the host's DNA. 
B)  Because the host cell is much smaller than the virus, the host cell must expand until it becomes a tumor large enough to hold the virus. 
C)  The virus could turn off an oncogene. 
D)  Viruses cannot cause cancer.

Question 18

All viruses cause cancer.

Accepted Answer

A) True 
 B)False

Question 19

Normal cellular genes that can be mutated into cancer-causing genes are known as

Accepted Answer

A)  oncogenes. 
B)  growth factors. 
C)  proto-oncogenes. 
D)  viral proteins. 
A)  oncogenes. 
B)  growth factors. 
C)  proto-oncogenes. 
D)  viral proteins.

Question 20

Mutations cause changes in __________ produced by a gene.

Accepted Answer

The answer of Mutations cause changes in __________ produced by...

Exam 40: Cancer: Cell Division Out of Control

In the future viruses may cure as well as cause cancer.

A tumor that has gained the ability to spread throughout the body, generally with life-threatening consequences, is known as a _______ tumor.

If a cell's p53 genes are inactivated, the cell

The mutation of p53 generally results in the formation of a malignant tumor.

Which of the following is not true of cancer?

_______ starts with a single cell that loses its ability to control cell division.

A harmless proliferation of cells in a human colon would be called a(n) ________ polyp.

A _______ is a harmless growth that may occur in the colon, for example, without being cancerous.

Phosphorylation resulting from the influence of a growth factor

The cancer retinoblastoma occurs as a result of the absence of the _____ gene.

People who quit smoking live longer than those who don't quit smoking.

Why was a version of Rous's virus that did not cause cancer important to our understanding of how viruses cause cancer?

Which of the following is not likely to cause a cell to become cancerous?

The addition of a phosphate group to a protein activate the protein by causing it to change its ___________.

If exposure to sunlight causes a mutation in a single proto-oncogene in a diploid cell so that it becomes hyperactive,

Tumor suppressor proteins

In order for a virus to reproduce, it must insert its DNA into the host cell's genome. How might this cause cancer in the host?

All viruses cause cancer.

Normal cellular genes that can be mutated into cancer-causing genes are known as

Mutations cause changes in __________ produced by a gene.

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

Building a Sustainable Society

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