Question 1

Which statement is FALSE in regards to the plasma membrane?

Accepted Answer

A)  Glucose cannot easily diffuse across the plasma membrane. 
B)  Protons can easily diffuse across the plasma membrane. 
C)  Oxygen can easily diffuse across the plasma membrane. 
D)  Water can easily diffuse across the plasma membrane. 
E)  Potassium ions cannot easily diffuse across the plasma membrane. 
A)  Glucose cannot easily diffuse across the plasma membrane. 
B)  Protons can easily diffuse across the plasma membrane. 
C)  Oxygen can easily diffuse across the plasma membrane. 
D)  Water can easily diffuse across the plasma membrane. 
E)  Potassium ions cannot easily diffuse across the plasma membrane.

Question 2

_______ motility is used by myxobacteria and some cyanobacteria for smooth movement across a solid surface.

Accepted Answer

The answer of _______ motility is used by myxobacteria and...

Question 3

Which one of the following is NOT a key function of the cytoplasmic membrane?

Accepted Answer

A)  signal transduction 
B)  nutrient transport 
C)  environmental sensing 
D)  protein synthesis 
E)  oxidative electron transport 
A)  signal transduction 
B)  nutrient transport 
C)  environmental sensing 
D)  protein synthesis 
E)  oxidative electron transport

Question 4

Sulfur globules are an example of inclusion bodies that may be found in some bacterial cells.What is their use?

Accepted Answer

A)  They are a carbon source 
B)  They are used for nucleotide synthesis 
C)  As an energy source 
D)  They provide buoyancy 
E)  They assist in membrane synthesis 
A)  They are a carbon source 
B)  They are used for nucleotide synthesis 
C)  As an energy source 
D)  They provide buoyancy 
E)  They assist in membrane synthesis

Question 5

What are short fiber-like structures that protrude from the bacterial surface and are primarily used for attachment called?

Accepted Answer

A)  pili 
B)  flagellin 
C)  porins 
D)  bactoprenol 
E)  lipopolysaccharides 
A)  pili 
B)  flagellin 
C)  porins 
D)  bactoprenol 
E)  lipopolysaccharides

Question 6

Which region contains the chromosome in the bacterial cell?

Accepted Answer

A)  Nucleus 
B)  Nucleoid 
C)  Plasmid 
D)  Plastid 
E)  Prophage 
A)  Nucleus 
B)  Nucleoid 
C)  Plasmid 
D)  Plastid 
E)  Prophage

Question 7

If cells are placed into a hypertonic solution,what reaction would you expect?

Accepted Answer

A)  The cell would lose water. 
B)  The cell would gain water. 
C)  The cell would pump out ions. 
D)  The cell would lyse. 
E)  The cell would increase in size. 
A)  The cell would lose water. 
B)  The cell would gain water. 
C)  The cell would pump out ions. 
D)  The cell would lyse. 
E)  The cell would increase in size.

Question 8

Which compound binds the outer membrane of Gram-negative bacteria to the thin peptidoglycan layer?

Accepted Answer

A)  lipoproteins 
B)  lipoteichoic acid 
C)  porin 
D)  bactoprenol 
E)  polysaccharide 
A)  lipoproteins 
B)  lipoteichoic acid 
C)  porin 
D)  bactoprenol 
E)  polysaccharide

Question 9

Which term describes spherical-shaped bacteria?

Accepted Answer

A)  cocci 
B)  bacilli 
C)  spirilla. 
D)  vibrios. 
E)  pleiomorphs 
A)  cocci 
B)  bacilli 
C)  spirilla. 
D)  vibrios. 
E)  pleiomorphs

Question 10

How are gas vesicles used by bacterial cells?

Accepted Answer

A)  As a source of oxygen 
B)  As a source of nitrogen 
C)  As a source of hydrogen 
D)  For buoyancy 
E)  As an energy source 
A)  As a source of oxygen 
B)  As a source of nitrogen 
C)  As a source of hydrogen 
D)  For buoyancy 
E)  As an energy source

Question 11

Which best describes the chemical structure of the Bacteria domain cytoplasmic membrane ?

Accepted Answer

A)  A bilayer of phospholipids. 
B)  A monolayer of phospholipids. 
C)  A monolayer of phospholipids with sterols. 
D)  A bilayer of phospholipids with sterols. 
E)  A trilayer of phospholipids. 
A)  A bilayer of phospholipids. 
B)  A monolayer of phospholipids. 
C)  A monolayer of phospholipids with sterols. 
D)  A bilayer of phospholipids with sterols. 
E)  A trilayer of phospholipids.

Question 12

Diaminopimelic acid is an amino acid naturally found in peptidoglycan.

Accepted Answer

A) True 
 B)False

Question 13

Describe the process of chemotaxis.

Accepted Answer

Chemotaxis is the process by which cells

Question 14

Which of these enzymes is produced by many animals for the hydrolysis of the glycan chain in peptidoglycan?

Accepted Answer

A)  lysozyme 
B)  ligase 
C)  lipase 
D)  aminidase 
E)  amylase 
A)  lysozyme 
B)  ligase 
C)  lipase 
D)  aminidase 
E)  amylase

Question 15

Protein channels in the outer membrane of Gram-negative bacteria that allow the diffusion of small molecules (600 daltons or less)across the membrane into the periplasmic space are called ____.

Accepted Answer

The answer of Protein channels in the outer membrane of...

Question 16

The movement of a bacterial cell toward a chemical attractant is called ________.

Accepted Answer

The answer of The movement of a bacterial cell toward...

Question 17

Which term describes straight,rod-shaped bacteria?

Accepted Answer

A)  cocci 
B)  bacilli 
C)  spirilla. 
D)  vibrios. 
E)  pleiomorphs 
A)  cocci 
B)  bacilli 
C)  spirilla. 
D)  vibrios. 
E)  pleiomorphs

Question 18

Which is the major component of the cell wall of microbes in the Bacteria domain?

Accepted Answer

A)  cellulose 
B)  chitin 
C)  protein 
D)  polysaccharide 
E)  peptidoglycan 
A)  cellulose 
B)  chitin 
C)  protein 
D)  polysaccharide 
E)  peptidoglycan

Question 19

What protein plays an important role in determining cell shape by directing cell wall synthesis in non-spherical bacteria?

Accepted Answer

A)  FtsZ 
B)  MreB 
C)  ParM 
D)  FlaA 
E)  PepZ 
A)  FtsZ 
B)  MreB 
C)  ParM 
D)  FlaA 
E)  PepZ

Question 20

Which of these is included in the Gram-negative cell envelope?

Accepted Answer

A)  peptidoglycan, LPS, and lipoteichoic acids. 
B)  peptidoglycan, teichoic acids, and lipoteichoic acids. 
C)  peptidoglycan, LPS, and teichoic acids. 
D)  peptidoglycan, LPS, and a large periplasmic space. 
E)  teichoic acids, lipoteichoic acids, and a large periplasmic space. 
A)  peptidoglycan, LPS, and lipoteichoic acids. 
B)  peptidoglycan, teichoic acids, and lipoteichoic acids. 
C)  peptidoglycan, LPS, and teichoic acids. 
D)  peptidoglycan, LPS, and a large periplasmic space. 
E)  teichoic acids, lipoteichoic acids, and a large periplasmic space.

Exam 2: Bacteria

Which statement is FALSE in regards to the plasma membrane?

_______ motility is used by myxobacteria and some cyanobacteria for smooth movement across a solid surface.

Which one of the following is NOT a key function of the cytoplasmic membrane?

Sulfur globules are an example of inclusion bodies that may be found in some bacterial cells.What is their use?

What are short fiber-like structures that protrude from the bacterial surface and are primarily used for attachment called?

Which region contains the chromosome in the bacterial cell?

If cells are placed into a hypertonic solution,what reaction would you expect?

Which compound binds the outer membrane of Gram-negative bacteria to the thin peptidoglycan layer?

Which term describes spherical-shaped bacteria?

How are gas vesicles used by bacterial cells?

Which best describes the chemical structure of the Bacteria domain cytoplasmic membrane ?

Diaminopimelic acid is an amino acid naturally found in peptidoglycan.

Describe the process of chemotaxis.

Which of these enzymes is produced by many animals for the hydrolysis of the glycan chain in peptidoglycan?

Protein channels in the outer membrane of Gram-negative bacteria that allow the diffusion of small molecules (600 daltons or less)across the membrane into the periplasmic space are called ____.

The movement of a bacterial cell toward a chemical attractant is called ________.

Which term describes straight,rod-shaped bacteria?

Which is the major component of the cell wall of microbes in the Bacteria domain?

What protein plays an important role in determining cell shape by directing cell wall synthesis in non-spherical bacteria?

Which of these is included in the Gram-negative cell envelope?

The Microbial World

Eukaryal Microbes

Archaea

Viruses

Cultivating Microorganisms

DNA Replication and Gene Expression

Viral Replication Strategies

Bacterial Genetic Analysis

Microbial Genomics

Regulation of Gene Expression

Microbial Biotechnology

Metabolism

Biogeochemical Cycles

Microbial Ecosystems

The Microbiology of Food and Water

Microbial Symbionts

Introduction to Infectious Diseases

Innate Host Defenses Against Microbial Invasion

Adaptive Immunity

Survival in the Host

Viral Pathogenesis

Eukaryal Microbe Pathogenesis

Control of Infectious Diseases

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