Question 1

The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______.

Accepted Answer

A)  cells with a true nucleus 
B)  a common ancestral cell 
C)  archaea 
D)  photosynthetic bacteria 
A)  cells with a true nucleus 
B)  a common ancestral cell 
C)  archaea 
D)  photosynthetic bacteria

Question 2

Which of the following are not considered microorganisms?

Accepted Answer

A)  Mosquitoes 
B)  Viruses 
C)  Protozoa 
D)  Bacteria 
E)  Fungi 
A)  Mosquitoes 
B)  Viruses 
C)  Protozoa 
D)  Bacteria 
E)  Fungi

Question 3

The microorganisms that recycle nutrients by breaking down dead matter and wastes are called ______.

Accepted Answer

A)  pathogens 
B)  eukaryotes 
C)  decomposers 
D)  fermenters 
E)  prokaryotes 
A)  pathogens 
B)  eukaryotes 
C)  decomposers 
D)  fermenters 
E)  prokaryotes

Question 4

Which of the following does not indicate microbe involvement in energy and nutrient ﬂow?

Accepted Answer

A)  Thermal hot springs warmed by heat from earth's interior 
B)  Decomposition of dead matter and wastes 
C)  Digestion of complex carbohydrates in animal diets 
D)  Formation of greenhouse gases, CO₂ and methane 
A)  Thermal hot springs warmed by heat from earth's interior 
B)  Decomposition of dead matter and wastes 
C)  Digestion of complex carbohydrates in animal diets 
D)  Formation of greenhouse gases, CO₂ and methane

Question 5

The names of the three proposed domains are: Bacteria, Protista, and Eukarya.

Accepted Answer

A) True 
 B)False

Question 6

The number one worldwide infectious diseases are ______.

Accepted Answer

A)  AIDS-related diseases 
B)  diarrheal diseases 
C)  respiratory diseases 
D)  measles and other rash diseases 
E)  malaria and other protozoan diseases 
A)  AIDS-related diseases 
B)  diarrheal diseases 
C)  respiratory diseases 
D)  measles and other rash diseases 
E)  malaria and other protozoan diseases

Question 7

In which way are archaea and eukaryotes the same?

Accepted Answer

A)  Possess RNA instead of DNA 
B)  Contain mitochondria for energy production 
C)  Have similar ssu rRNA sequences 
D)  Contain membrane-bound organelles 
A)  Possess RNA instead of DNA 
B)  Contain mitochondria for energy production 
C)  Have similar ssu rRNA sequences 
D)  Contain membrane-bound organelles

Question 8

Archaeal cells are about ______ bacterial cells.

Accepted Answer

A)  ten times larger than 
B)  ten times smaller than 
C)  the same size as 
A)  ten times larger than 
B)  ten times smaller than 
C)  the same size as

Question 9

A hypothesis must be tested many times before it can be considered a theory.

Accepted Answer

A) True 
 B)False

Question 10

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that _______.

Accepted Answer

A)  the eukaryotes arose from prokaryotes 
B)  the Archaea are more closely related to bacteria than eukaryotes 
C)  bacteria, archaea, and eukaryotes are not related 
D)  all modern and extinct organisms on earth arose from a common ancestor Refer to "Systems of Presenting a Universal Tree of Life" for a discussion of the ssu rRNAs and their 
A)  the eukaryotes arose from prokaryotes 
B)  the Archaea are more closely related to bacteria than eukaryotes 
C)  bacteria, archaea, and eukaryotes are not related 
D)  all modern and extinct organisms on earth arose from a common ancestor Refer to "Systems of Presenting a Universal Tree of Life" for a discussion of the ssu rRNAs and their

Question 11

The ?rst cells appeared about _____ billion years ago.

Accepted Answer

A)  5 
B)  4 
C)  3.5 
D)  2 
E)  1 
A)  5 
B)  4 
C)  3.5 
D)  2 
E)  1

Question 12

The scienti?c method involves formulating a tentative explanation, called the hypothesis, to account for what has been observed or measured.

Accepted Answer

A) True 
 B)False

Question 13

Sterile is best described as ______.

Accepted Answer

A)  absence of spores 
B)  pathogen-free 
C)  pasteurized 
D)  absence of any life forms and viral particles 
E)  homogenized 
A)  absence of spores 
B)  pathogen-free 
C)  pasteurized 
D)  absence of any life forms and viral particles 
E)  homogenized

Question 14

Disease-causing microorganisms are called ______.

Accepted Answer

A)  decomposers 
B)  fermenters 
C)  eukaryotes 
D)  bacteria 
E)  pathogens 
A)  decomposers 
B)  fermenters 
C)  eukaryotes 
D)  bacteria 
E)  pathogens

Question 15

When assigning a scientiﬁc name to an organism, _______.

Accepted Answer

A)  both genus and species names are capitalized 
B)  both genus and species names are italicized or underlined 
C)  the species name is capitalized 
D)  the species name is placed ﬁrst 
E)  the species name can be abbreviated 
A)  both genus and species names are capitalized 
B)  both genus and species names are italicized or underlined 
C)  the species name is capitalized 
D)  the species name is placed ﬁrst 
E)  the species name can be abbreviated

Question 16

A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on _______.

Accepted Answer

A)  recombinant DNA 
B)  bioremediation 
C)  nomenclature 
D)  determining if that species is the cause of a new disease 
E)  determining evolutionary relatedness 
A)  recombinant DNA 
B)  bioremediation 
C)  nomenclature 
D)  determining if that species is the cause of a new disease 
E)  determining evolutionary relatedness

Question 17

Eukaryotic cells are larger than bacterial or archaeal cells; all cells are larger than macromolecules. Where do viruses ﬁt on this scale?

Accepted Answer

A)  Viruses are smaller than eukaryotic cells, but larger than bacterial or archaeal cells. 
B)  Viruses are larger than eukaryotic cells. 
C)  Viruses are smaller than macromolecules. 
D)  Viruses are smaller than bacterial or archaeal cells, but larger than macromolecules. 
A)  Viruses are smaller than eukaryotic cells, but larger than bacterial or archaeal cells. 
B)  Viruses are larger than eukaryotic cells. 
C)  Viruses are smaller than macromolecules. 
D)  Viruses are smaller than bacterial or archaeal cells, but larger than macromolecules.

Question 18

The scientiﬁc method includes all of the following except ______.

Accepted Answer

A)  publication 
B)  experimentation 
C)  observation 
D)  hypothesis 
A)  publication 
B)  experimentation 
C)  observation 
D)  hypothesis

Question 19

Which of the following is a taxon that contains all the other taxa listed?

Accepted Answer

A)  Kingdom 
B)  Family 
C)  Genus 
D)  Species 
E)  Phylum 
A)  Kingdom 
B)  Family 
C)  Genus 
D)  Species 
E)  Phylum

Exam 1: The Main Themes of Microbiology

The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______.

Which of the following are not considered microorganisms?

The microorganisms that recycle nutrients by breaking down dead matter and wastes are called ______.

Which of the following does not indicate microbe involvement in energy and nutrient ﬂow?

The names of the three proposed domains are: Bacteria, Protista, and Eukarya.

The number one worldwide infectious diseases are ______.

In which way are archaea and eukaryotes the same?

Archaeal cells are about ______ bacterial cells.

A hypothesis must be tested many times before it can be considered a theory.

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that _______.

The ?rst cells appeared about _____ billion years ago.

The scienti?c method involves formulating a tentative explanation, called the hypothesis, to account for what has been observed or measured.

Sterile is best described as ______.

Disease-causing microorganisms are called ______.

When assigning a scientiﬁc name to an organism, _______.

A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on _______.

Eukaryotic cells are larger than bacterial or archaeal cells; all cells are larger than macromolecules. Where do viruses ﬁt on this scale?

The scientiﬁc method includes all of the following except ______.

Which of the following is a taxon that contains all the other taxa listed?

The Chemistry of Biology

Tools of the Laboratory: Methods for the Culturing of Microscopic Analysis of Microorganisms

Bacteria and Archaea

Eukaryotic Cells and Microorganisms

Viruses and Prions

Microbial Nutrition and Growth

Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Analysis and Genetic Engineering

Physical and Chemical Control of Microbes

Antimicrobial Treatment

Microbe-Human Interactions: Health and Disease

Host Defenses I: Overview and Nonspecific Defenses

Host Defenses Ii: Specific Immunity and Immunization

Disorders in Immunity

Diagnosing Infections

Infectious Diseases Affecting the Skin and Eyes

Infectious Diseases Affecting the Nervous System

Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Infectious Diseases Affecting the Respiratory System

Infectious Diseases Affecting the Gastrointestinal Tract

Infectious Diseases Affecting the Genitourinary System

Microbes and the Environment

Applied Microbiology and Food and Water Safety

Filters