Question 1

Some elongated fimbria are important in transferring DNA between bacteria. 
____________________

Accepted Answer

A) True 
 B)False

Question 2

Figure 25-1   In the accompanying figure, what would structure A be made up as a gram-negative bacterium?

Accepted Answer

A)  cellulose 
B)  plasmids 
C)  spirochetes 
D)  peptidoglycan 
E)  monosaccharides 
A)  cellulose 
B)  plasmids 
C)  spirochetes 
D)  peptidoglycan 
E)  monosaccharides

Question 3

A bacterium that uses the oxidation of inorganic compounds to provide energy for manufacturing nutritious organic compounds is a:

Accepted Answer

A)  parasite. 
B)  pathogen. 
C)  saprotroph. 
D)  chemoautotroph. 
E)  photoautotroph. 
A)  parasite. 
B)  pathogen. 
C)  saprotroph. 
D)  chemoautotroph. 
E)  photoautotroph.

Question 4

How do bacteria move?

Accepted Answer

A)  By means of pili 
B)  By means of cilia 
C)  By means of fimbriae 
D)  By means of a rotating flagella 
E)  Bacteria are incapable of locomotion. 
A)  By means of pili 
B)  By means of cilia 
C)  By means of fimbriae 
D)  By means of a rotating flagella 
E)  Bacteria are incapable of locomotion.

Question 5

What are Koch's postulates?

Accepted Answer

A)  A set of rules on how to treat a disease 
B)  A set of theories that explains how a bacteria can cause a disease 
C)  A set of rules that provide a classification system of disease-causing bacteria 
D)  A set of guidelines to follow in order to isolate a particular bacteria from an infected organism 
E)  A set of guidelines to demonstrate that a specific pathogen causes specific disease symptoms 
A)  A set of rules on how to treat a disease 
B)  A set of theories that explains how a bacteria can cause a disease 
C)  A set of rules that provide a classification system of disease-causing bacteria 
D)  A set of guidelines to follow in order to isolate a particular bacteria from an infected organism 
E)  A set of guidelines to demonstrate that a specific pathogen causes specific disease symptoms

Question 6

Plasmids of bacteria often have genes involved in:

Accepted Answer

A)  motility. 
B)  reproduction. 
C)  viral resistance. 
D)  photosynthesis. 
E)  antibiotic resistance. 
A)  motility. 
B)  reproduction. 
C)  viral resistance. 
D)  photosynthesis. 
E)  antibiotic resistance.

Question 7

What is the purpose of sex pili?

Accepted Answer

A)  To transmit DNA between bacteria 
B)  To transmit RNA between bacteria 
C)  To transmit enzymes between bacteria 
D)  To transmit chemical signals between bacteria 
E)  To transmit zygotes or sperm between bacteria 
A)  To transmit DNA between bacteria 
B)  To transmit RNA between bacteria 
C)  To transmit enzymes between bacteria 
D)  To transmit chemical signals between bacteria 
E)  To transmit zygotes or sperm between bacteria

Question 8

Gram-negative cell walls have an outer membrane that contains lipids and peptidoglycans . ____________________

Accepted Answer

A) True 
 B)False

Question 9

Bacterial plasmids often have genes that code for genetic exchange or antibiotic resistance. 
____________________

Accepted Answer

A) True 
 B)False

Question 10

Which statement about bacteria is FALSE?

Accepted Answer

A)  Some bacteria can photosynthesize. 
B)  Bacteria are important decomposers. 
C)  A small percentage of bacteria are pathogenic. 
D)  Bacteria are not cellular and are sometimes not classified as life forms. 
E)  Bacteria convert atmospheric nitrogen into ammonia and then nitrates that can be used by plants. 
A)  Some bacteria can photosynthesize. 
B)  Bacteria are important decomposers. 
C)  A small percentage of bacteria are pathogenic. 
D)  Bacteria are not cellular and are sometimes not classified as life forms. 
E)  Bacteria convert atmospheric nitrogen into ammonia and then nitrates that can be used by plants.

Question 11

Which Archaea have the ability to carry out a form of the Calvin cycle, capturing sunlight with bacteriorhodopsin?

Accepted Answer

A)  extreme thermophiles 
B)  extreme halophiles 
C)  Nanoarchaeota 
D)  Korarchaeota 
E)  Euryarchaeota 
A)  extreme thermophiles 
B)  extreme halophiles 
C)  Nanoarchaeota 
D)  Korarchaeota 
E)  Euryarchaeota

Question 12

Prokaryotes have a(n) nucleus that contains DNA. 
____________________

Accepted Answer

A) True 
 B)False

Question 13

Most bacterial cells can keep from bursting in a hypotonic environment because of:

Accepted Answer

A)  a stiff capsule. 
B)  a rigid cell wall. 
C)  a tough cell membrane. 
D)  an efficient water pump. 
E)  pumping large quantities of salts into the cell. 
A)  a stiff capsule. 
B)  a rigid cell wall. 
C)  a tough cell membrane. 
D)  an efficient water pump. 
E)  pumping large quantities of salts into the cell.

Question 14

How do some bacteria respond to adverse environmental conditions?

Accepted Answer

A)  Bacteria shrink in size. 
B)  Bacteria form endospores. 
C)  Bacteria release exotoxins. 
D)  Bacteria develops a cyst and fills it with fluid. 
E)  Bacteria build up more protein in their capsules. 
A)  Bacteria shrink in size. 
B)  Bacteria form endospores. 
C)  Bacteria release exotoxins. 
D)  Bacteria develops a cyst and fills it with fluid. 
E)  Bacteria build up more protein in their capsules.

Question 15

Which statement about biofilms is FALSE?

Accepted Answer

A)  Biofilms are formed by bacteria living in a watery environment. 
B)  Biofilms enable bacteria to attach to solid surfaces. 
C)  Biofilm may develop on surgical implants. 
D)  Biofilms are usually less than 2 μ m thick. 
E)  An example of biofilm is dental plaque. 
A)  Biofilms are formed by bacteria living in a watery environment. 
B)  Biofilms enable bacteria to attach to solid surfaces. 
C)  Biofilm may develop on surgical implants. 
D)  Biofilms are usually less than 2 μ m thick. 
E)  An example of biofilm is dental plaque.

Question 16

____ is a form of genetic exchange in bacteria that involves contact between two cells.

Accepted Answer

A)  Transformation 
B)  Transduction 
C)  Binary fission 
D)  Conjugation 
E)  Budding 
A)  Transformation 
B)  Transduction 
C)  Binary fission 
D)  Conjugation 
E)  Budding

Question 17

Which disease is caused by an exotoxin released by the gram-positive, endospore-forming bacteria, often because food was not heated sufficiently to kill the endospores?

Accepted Answer

A)  cholera 
B)  botulism 
C)  diphtheria 
D)  salmonella 
E)  travelers' diarrhea 
A)  cholera 
B)  botulism 
C)  diphtheria 
D)  salmonella 
E)  travelers' diarrhea

Question 18

What are the four Koch's postulates in identifying pathogens that cause a particular disease?

Accepted Answer

(1 the pathogen must be present in every

Question 19

Streptococci, the bacteria responsible for strep throat infections, is classified within which group of Bacteria?

Accepted Answer

A)  spirochetes 
B)  cyanobacteria 
C)  alpha proteobacteria 
D)  epsilon proteobacteria 
E)  gram-negative bacteria 
A)  spirochetes 
B)  cyanobacteria 
C)  alpha proteobacteria 
D)  epsilon proteobacteria 
E)  gram-negative bacteria

Question 20

Gram-positive bacteria would stain ____ in a gram stain because of a thick layer of ____ in their cell walls.

Accepted Answer

A)  green; cellulose 
B)  red; polysaccharides 
C)  green; peptidoglycan 
D)  purple; peptidoglycan 
E)  purple; polysaccharides 
A)  green; cellulose 
B)  red; polysaccharides 
C)  green; peptidoglycan 
D)  purple; peptidoglycan 
E)  purple; polysaccharides

Exam 25: Bacteria and Archaea

Some elongated fimbria are important in transferring DNA between bacteria. ____________________

Figure 25-1 In the accompanying figure, what would structure A be made up as a gram-negative bacterium?

A bacterium that uses the oxidation of inorganic compounds to provide energy for manufacturing nutritious organic compounds is a:

How do bacteria move?

What are Koch's postulates?

Plasmids of bacteria often have genes involved in:

What is the purpose of sex pili?

Gram-negative cell walls have an outer membrane that contains lipids and peptidoglycans . ____________________

Bacterial plasmids often have genes that code for genetic exchange or antibiotic resistance. ____________________

Which statement about bacteria is FALSE?

Which Archaea have the ability to carry out a form of the Calvin cycle, capturing sunlight with bacteriorhodopsin?

Prokaryotes have a(n) nucleus that contains DNA. ____________________

Most bacterial cells can keep from bursting in a hypotonic environment because of:

How do some bacteria respond to adverse environmental conditions?

Which statement about biofilms is FALSE?

____ is a form of genetic exchange in bacteria that involves contact between two cells.

Which disease is caused by an exotoxin released by the gram-positive, endospore-forming bacteria, often because food was not heated sufficiently to kill the endospores?

What are the four Koch's postulates in identifying pathogens that cause a particular disease?

Streptococci, the bacteria responsible for strep throat infections, is classified within which group of Bacteria?

Gram-positive bacteria would stain ____ in a gram stain because of a thick layer of ____ in their cell walls.

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

Gram-positive bacteria would stain in a gram stain because of a thick layer of in their cell walls.