Question 1

The nodules in the figure are

Accepted Answer

A)  intended to hold pathogenic bacteria. 
B)  intended to exchange genetic material between the plant and the bacteria. 
C)  carrying on photosynthesis. 
D)  protecting the plant from viroids. 
E)  converting nitrogen gas to a form usable by plants. 
A)  intended to hold pathogenic bacteria. 
B)  intended to exchange genetic material between the plant and the bacteria. 
C)  carrying on photosynthesis. 
D)  protecting the plant from viroids. 
E)  converting nitrogen gas to a form usable by plants.

Question 2

Which of the following is within the size range of a typical prokaryote?

Accepted Answer

A)  A cell 100 micrometers in diameter 
B)  A cell 700 micrometers long 
C)  A cell the size of the period at the end of a sentence 
D)  A cell 2 micrometers in diameter 
E)  A cell 25 micrometers in diameter 
A)  A cell 100 micrometers in diameter 
B)  A cell 700 micrometers long 
C)  A cell the size of the period at the end of a sentence 
D)  A cell 2 micrometers in diameter 
E)  A cell 25 micrometers in diameter

Question 3

How do members of Archaea differ from the Bacteria?

Accepted Answer

Bacterial cell walls contain p

Question 4

Through which process do bacteria recycle nutrients in the environment?

Accepted Answer

A)  Decomposition 
B)  Conjugation 
C)  Binary fission 
D)  Photosynthesis 
E)  Endospore formation 
A)  Decomposition 
B)  Conjugation 
C)  Binary fission 
D)  Photosynthesis 
E)  Endospore formation

Question 5

Which structure enables a bacterium to survive and infect a host even after a long period of desiccation?

Accepted Answer

A)  Slime layer 
B)  Pili 
C)  Capsule 
D)  Protein coat 
E)  Endospore 
A)  Slime layer 
B)  Pili 
C)  Capsule 
D)  Protein coat 
E)  Endospore

Question 6

How do the flagella of bacteria differ from the flagella of archaea?

Accepted Answer

A)  Bacterial flagella occur at only one end of the cell. 
B)  The flagella of archaea are scattered over the cell surface. 
C)  Bacterial flagella are used for reproduction. 
D)  Bacterial flagella cannot rotate. 
E)  Archaeal flagella are thinner than bacterial flagella. 
A)  Bacterial flagella occur at only one end of the cell. 
B)  The flagella of archaea are scattered over the cell surface. 
C)  Bacterial flagella are used for reproduction. 
D)  Bacterial flagella cannot rotate. 
E)  Archaeal flagella are thinner than bacterial flagella.

Question 7

Bacteria lack membrane- bound organelles.

Accepted Answer

A) True 
 B)False

Question 8

The corkscrew- shaped bacterium is vectored by ticks into humans and eventually may cause nervous system issues.

Accepted Answer

A)  Clostridium tetani 
B)  Borrelia burgdorferi 
C)  Clostridium botulium 
D)  Yersinia pestis 
E)  Escherichia coli 
A)  Clostridium tetani 
B)  Borrelia burgdorferi 
C)  Clostridium botulium 
D)  Yersinia pestis 
E)  Escherichia coli

Question 9

Are viruses alive or not? Explain your reasoning.

Accepted Answer

Viruses are simply genetic material (DNA

Question 10

Which of the following is the dreaded "black death" bacterium?

Accepted Answer

A)  Streptococcus 
B)  Clostridium 
C)  Borrelia burgdorferi 
D)  Yersinia pestis 
E)  Escherichia coli 
A)  Streptococcus 
B)  Clostridium 
C)  Borrelia burgdorferi 
D)  Yersinia pestis 
E)  Escherichia coli

Question 11

Cyanobacteria obtain energy through .

Accepted Answer

The answer of Cyanobacteria obtain energy through ....

Question 12

The cause of tetanus is

Accepted Answer

A)  Clostridium tetani. 
B)  Campylobacter. 
C)  Escherichia coli. 
D)  Streptococcus pneumoniae. 
E)  Borrelia burgdorferi. 
A)  Clostridium tetani. 
B)  Campylobacter. 
C)  Escherichia coli. 
D)  Streptococcus pneumoniae. 
E)  Borrelia burgdorferi.

Question 13

Legumes obtain a useful form of _ from bacteria that live in root nodules.

Accepted Answer

A)  hydrogen 
B)  carbon 
C)  oxygen 
D)  nitrogen 
E)  sulfur 
A)  hydrogen 
B)  carbon 
C)  oxygen 
D)  nitrogen 
E)  sulfur

Question 14

The use of bacteria to break down pollutants is referred to as

Accepted Answer

A)  bioremediation. 
B)  biosynthesis. 
C)  binary fission. 
D)  nitrogen- fixation. 
E)  biofixation. 
A)  bioremediation. 
B)  biosynthesis. 
C)  binary fission. 
D)  nitrogen- fixation. 
E)  biofixation.

Question 15

Which of the following consists of a protein coat surrounding a molecule of genetic material?

Accepted Answer

A)  Protists 
B)  Viruses 
C)  Bacteria 
D)  Prions 
E)  Archaea 
A)  Protists 
B)  Viruses 
C)  Bacteria 
D)  Prions 
E)  Archaea

Question 16

Smallpox is caused by infected rats.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following causes AIDS (acquired immune deficiency syndrome)?

Accepted Answer

A)  A virus 
B)  A viroid 
C)  A prion 
D)  A bacterium 
E)  An archaea 
A)  A virus 
B)  A viroid 
C)  A prion 
D)  A bacterium 
E)  An archaea

Question 18

In their relationships with humans, are most species of bacteria beneficial, harmful, or no noticeable purpose?

Accepted Answer

The vast majority of prokaryot

Question 19

While examining a hot spring, you find something you haven't seen before. It has a cell membrane, but the cell wall lacks peptidoglycan. It contains both DNA and RNA. The DNA is circular. It would be classified as a(n)

Accepted Answer

A)  prion. 
B)  archaea. 
C)  bacterium. 
D)  fungus. 
E)  virus. 
A)  prion. 
B)  archaea. 
C)  bacterium. 
D)  fungus. 
E)  virus.

Question 20

Bacteria are able to increase their genetic variability by reproducing sexually.

Accepted Answer

A) True 
 B)False

Exam 20: The Diversity of Prokaryotes and Viruses

The nodules in the figure are

Which of the following is within the size range of a typical prokaryote?

How do members of Archaea differ from the Bacteria?

Through which process do bacteria recycle nutrients in the environment?

Which structure enables a bacterium to survive and infect a host even after a long period of desiccation?

How do the flagella of bacteria differ from the flagella of archaea?

Bacteria lack membrane- bound organelles.

The corkscrew- shaped bacterium is vectored by ticks into humans and eventually may cause nervous system issues.

Are viruses alive or not? Explain your reasoning.

Which of the following is the dreaded "black death" bacterium?

Cyanobacteria obtain energy through .

The cause of tetanus is

Legumes obtain a useful form of _ from bacteria that live in root nodules.

The use of bacteria to break down pollutants is referred to as

Which of the following consists of a protein coat surrounding a molecule of genetic material?

Smallpox is caused by infected rats.

Which of the following causes AIDS (acquired immune deficiency syndrome)?

In their relationships with humans, are most species of bacteria beneficial, harmful, or no noticeable purpose?

While examining a hot spring, you find something you haven't seen before. It has a cell membrane, but the cell wall lacks peptidoglycan. It contains both DNA and RNA. The DNA is circular. It would be classified as a(n)

Bacteria are able to increase their genetic variability by reproducing sexually.

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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