Question 1

Not all stem cells can generate all body cell types, only those described as ____________________ have this ability.

Accepted Answer

The answer of Not all stem cells can generate all...

Question 2

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 3

Cigarette smoking is the leading cause of cancer deaths in the United States.

Accepted Answer

A) True 
 B)False

Question 4

A variety of progressive stages characterize human embryogenesis, but the process always begins with the formation of a zygote.

Accepted Answer

A) True 
 B)False

Question 5

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 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 to reproduce.

Question 6

Multipotency and unipotency can be a characteristic of some adult stem cell lines and develop when specific genes are deleted in the differentiation process.

Accepted Answer

A) True 
 B)False

Question 7

A ____________________ is a segment of DNA that encodes for a distinct inherited characteristic.

Accepted Answer

The answer of A ____________________ is a segment of DNA...

Question 8

Which of the following is not true of cell division?

Accepted Answer

A) A cell has no control over how often it divides. 
B) Negative growth regulators are used to halt cell division. 
C) Numerous cellular proteins are affected by cell division signals. 
D) Uncontrolled cell division can cause cancer. 
A) A cell has no control over how often it divides. 
B) Negative growth regulators are used to halt cell division. 
C) Numerous cellular proteins are affected by cell division signals. 
D) Uncontrolled cell division can cause cancer.

Question 9

Adult and embryonic stem cells share many similarities, but only ____________________ stem cells can give rise to all of the 220 cell types that occur in the human body.

Accepted Answer

The answer of Adult and embryonic stem cells share many...

Question 10

Cancer in humans is caused

Accepted Answer

A) only by environmental factors. 
B) only by genetic factors. 
C) by neither environmental nor genetic factors. 
D) by both environmental and genetic factors. 
A) only by environmental factors. 
B) only by genetic factors. 
C) by neither environmental nor genetic factors. 
D) by both environmental and genetic factors.

Question 11

The proteins synthesized from proto-oncogenes, which often participate in signal cascades, are typically active

Accepted Answer

A) only in Golgi bodies. 
B) only on the cell's surface. 
C) only in the cell's nucleus. 
D) throughout the cell. 
A) only in Golgi bodies. 
B) only on the cell's surface. 
C) only in the cell's nucleus. 
D) throughout the cell.

Question 12

In the 1960s, biologists successfully manipulated a cell from the leaf of a carrot to grow to become a fully complete carrot plant. What term best describes the growth potential of that manipulated cell?

Accepted Answer

A) totipotent 
B) pleuripotent 
C) unipotent 
D) multipotent 
A) totipotent 
B) pleuripotent 
C) unipotent 
D) multipotent

Question 13

A cure for cancer would stop all cell division in an organism.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

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

Question 15

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

Question 16

Human males continuously produce sperm and remain fertile throughout their lives; this ability is most likely the result of

Accepted Answer

A) large quantities of immature sperm cells produced and stored in the testes early in life that gradually mature. 
B) a hormonally based signal transduction pathway that converts testicular tissue into iPSCs. 
C) the activity of multipotent stem cells in the testes. 
D) the conversion of surplus cell types, like red blood cells, into sperm. 
A) large quantities of immature sperm cells produced and stored in the testes early in life that gradually mature. 
B) a hormonally based signal transduction pathway that converts testicular tissue into iPSCs. 
C) the activity of multipotent stem cells in the testes. 
D) the conversion of surplus cell types, like red blood cells, into sperm.

Question 17

____________________ cancers spread throughout the body with life-threatening consequences.

Accepted Answer

The answer of ____________________ cancers spread throughout the body with...

Question 18

Chemical manipulation in some instances can activate totipotency, but to recover a naturally totipotent cell, researchers need access to cells from the _____ days following fertilization.

Accepted Answer

A) gastrula, a structure developing within 14 
B) blastula, a structure developing within 8-10 
C) blastocyst, a structure developing within 5-7 
D) morula, a structure developing within 3-4 
A) gastrula, a structure developing within 14 
B) blastula, a structure developing within 8-10 
C) blastocyst, a structure developing within 5-7 
D) morula, a structure developing within 3-4

Question 19

Although expensive, many health experts are in favor of extending free vaccinations for human papilloma virus (HPV)to males even though HPV infection is more inconvenient than life threatening. How might society benefit if both males and females receive free vaccinations?

Accepted Answer

A) Because the disease is sexually transmitted, fewer infected males will reduce the rate of transmission to their unvaccinated partners. 
B) Epidemiological studies have shown that the most effective way to eliminate an infectious disease is to remove any reservoirs from which it can infect unvaccinated hosts. 
C) It is a commonly experienced infection with health care costs that greatly exceed the cost of vaccination. 
D) all of the above 
A) Because the disease is sexually transmitted, fewer infected males will reduce the rate of transmission to their unvaccinated partners. 
B) Epidemiological studies have shown that the most effective way to eliminate an infectious disease is to remove any reservoirs from which it can infect unvaccinated hosts. 
C) It is a commonly experienced infection with health care costs that greatly exceed the cost of vaccination. 
D) all of the above

Question 20

In the illustration below, which letter correctly identifies the inner cell mass?

Accepted Answer

A) A 
B) B 
C) C 
D) The inner cell mass is not labeled in this illustration. 
A) A 
B) B 
C) C 
D) The inner cell mass is not labeled in this illustration.

Exam 11: Stem Cells, Cancer, and Human Health

Not all stem cells can generate all body cell types, only those described as ____________________ have this ability.

Normal cell division requires

Cigarette smoking is the leading cause of cancer deaths in the United States.

A variety of progressive stages characterize human embryogenesis, but the process always begins with the formation of a zygote.

Which of the following statements about viruses is false?

Multipotency and unipotency can be a characteristic of some adult stem cell lines and develop when specific genes are deleted in the differentiation process.

A ____________________ is a segment of DNA that encodes for a distinct inherited characteristic.

Which of the following is not true of cell division?

Adult and embryonic stem cells share many similarities, but only ____________________ stem cells can give rise to all of the 220 cell types that occur in the human body.

Cancer in humans is caused

The proteins synthesized from proto-oncogenes, which often participate in signal cascades, are typically active

In the 1960s, biologists successfully manipulated a cell from the leaf of a carrot to grow to become a fully complete carrot plant. What term best describes the growth potential of that manipulated cell?

A cure for cancer would stop all cell division in an organism.

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

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

Human males continuously produce sperm and remain fertile throughout their lives; this ability is most likely the result of

____________________ cancers spread throughout the body with life-threatening consequences.

Chemical manipulation in some instances can activate totipotency, but to recover a naturally totipotent cell, researchers need access to cells from the _____ days following fertilization.

Although expensive, many health experts are in favor of extending free vaccinations for human papilloma virus (HPV)to males even though HPV infection is more inconvenient than life threatening. How might society benefit if both males and females receive free vaccinations?

In the illustration below, which letter correctly identifies the inner cell mass?

The Nature of Science and the Characteristics of Life

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

Dna and Genes

From Gene to Protein

Dna Technology

How Evolution Works

Evolution of Populations

Speciation and the Origins of Biological Diversity

The Evolutionary History of Life

The Biosphere

Growth of Populations

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons, Muscles, and Movement

Defenses Against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

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