Question 1

Specific membrane components, particularly ________, determine which substances are transported across the membrane.

Accepted Answer

A)  phospholipids 
B)  proteins 
C)  ions 
D)  polysaccharides 
E)  leaflets 
A)  phospholipids 
B)  proteins 
C)  ions 
D)  polysaccharides 
E)  leaflets

Question 2

One similarity between a Gram-negative cell envelope and that of mycobacteria is that mycobacteria have

Accepted Answer

A)  lipid A. 
B)  teichoic acids. 
C)  a porin. 
D)  S-layers. 
E)  ampicillin. 
A)  lipid A. 
B)  teichoic acids. 
C)  a porin. 
D)  S-layers. 
E)  ampicillin.

Question 3

Which of the following statements about the prokaryotic flagella is INCORRECT?

Accepted Answer

A)  It is driven by the cell's transmembrane proton current. 
B)  It is embedded in the layers of the cell envelope. 
C)  It is observed by electron microscopy. 
D)  It moves with a whiplike motion. 
E)  It is used for chemotaxis. 
A)  It is driven by the cell's transmembrane proton current. 
B)  It is embedded in the layers of the cell envelope. 
C)  It is observed by electron microscopy. 
D)  It moves with a whiplike motion. 
E)  It is used for chemotaxis.

Question 4

Describe the types of molecules that can move through a membrane via passive diffusion.

Accepted Answer

Small uncharged molecules such

Question 5

The structure shown below is found in the ________ of some bacteria and the larger molecules are connected by the ________ cross-link shown at the arrow.

Accepted Answer

A)  cell wall; sugar 
B)  cell membrane; peptide 
C)  cell membrane; sugar 
D)  cell wall; peptide 
E)  nucleoid membrane; peptide 
A)  cell wall; sugar 
B)  cell membrane; peptide 
C)  cell membrane; sugar 
D)  cell wall; peptide 
E)  nucleoid membrane; peptide

Question 6

Which is NOT a component of a Gram-negative bacterium's wall?

Accepted Answer

A)  peptidoglycan 
B)  teichoic acid 
C)  N-acetylmuramic acid 
D)  diaminopimelic acid 
E)  MurNac 
A)  peptidoglycan 
B)  teichoic acid 
C)  N-acetylmuramic acid 
D)  diaminopimelic acid 
E)  MurNac

Question 7

Which of the following is true of Fts proteins?

Accepted Answer

A)  They form a ring in the area where cell division will occur. 
B)  They aid in DNA replication. 
C)  They are involved in peptidoglycan synthesis. 
D)  They are involved in making proteins. 
E)  They are important in transcription. 
A)  They form a ring in the area where cell division will occur. 
B)  They aid in DNA replication. 
C)  They are involved in peptidoglycan synthesis. 
D)  They are involved in making proteins. 
E)  They are important in transcription.

Question 8

The partition that results from the inward growth of the cell envelope from opposite directions is known as the

Accepted Answer

A)  divisome. 
B)  septum. 
C)  wall. 
D)  colony. 
E)  Z-ring. 
A)  divisome. 
B)  septum. 
C)  wall. 
D)  colony. 
E)  Z-ring.

Question 9

Which name refers to having flagella attached at one or both ends of the cell?

Accepted Answer

A)  peritrichous 
B)  lophotrichous 
C)  monotrichous 
D)  bitrichous 
E)  flagellated 
A)  peritrichous 
B)  lophotrichous 
C)  monotrichous 
D)  bitrichous 
E)  flagellated

Question 10

Light is harvested by protein complexes called

Accepted Answer

A)  thylakoids. 
B)  carboxysomes. 
C)  gas vesicles. 
D)  storage granules. 
E)  magnetosomes. 
A)  thylakoids. 
B)  carboxysomes. 
C)  gas vesicles. 
D)  storage granules. 
E)  magnetosomes.

Question 11

The bacterial flagellum is a helical protein filament whose ________ motor moves the cell in search of a more favorable environment.

Accepted Answer

A)  shaking 
B)  vibrating 
C)  wavelike 
D)  whiplike 
E)  propeller-like 
A)  shaking 
B)  vibrating 
C)  wavelike 
D)  whiplike 
E)  propeller-like

Question 12

Polar aging of symmetrical bacteria such as E. coli plays a role in stress responses in which of the following ways?

Accepted Answer

A)  Antibiotics only affect older poles of stressed cells. 
B)  Alternators and accelerators are better at responding to stress. 
C)  Proteins damaged by stresses accumulate at old poles, thereby allowing new poles to continue growing. 
D)  Newer poles are more resistant to acidity and heat. 
E)  Newer poles produce flagella and can swim away from stress. 
A)  Antibiotics only affect older poles of stressed cells. 
B)  Alternators and accelerators are better at responding to stress. 
C)  Proteins damaged by stresses accumulate at old poles, thereby allowing new poles to continue growing. 
D)  Newer poles are more resistant to acidity and heat. 
E)  Newer poles produce flagella and can swim away from stress.

Specific membrane components, particularly ________, determine which substances are transported across the membrane.

One similarity between a Gram-negative cell envelope and that of mycobacteria is that mycobacteria have

Which of the following statements about the prokaryotic flagella is INCORRECT?

Describe the types of molecules that can move through a membrane via passive diffusion.

The structure shown below is found in the of some bacteria and the larger molecules are connected by the cross-link shown at the arrow.

Which is NOT a component of a Gram-negative bacterium's wall?

Which of the following is true of Fts proteins?

The partition that results from the inward growth of the cell envelope from opposite directions is known as the

Which name refers to having flagella attached at one or both ends of the cell?

Light is harvested by protein complexes called

The bacterial flagellum is a helical protein filament whose ________ motor moves the cell in search of a more favorable environment.

Polar aging of symmetrical bacteria such as E. coli plays a role in stress responses in which of the following ways?

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes in Global Elemental Cycles

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

Exam 3: Cell Structure and Function

Specific membrane components, particularly ________, determine which substances are transported across the membrane.

One similarity between a Gram-negative cell envelope and that of mycobacteria is that mycobacteria have

Which of the following statements about the prokaryotic flagella is INCORRECT?

Describe the types of molecules that can move through a membrane via passive diffusion.

The structure shown below is found in the ________ of some bacteria and the larger molecules are connected by the ________ cross-link shown at the arrow.

Which is NOT a component of a Gram-negative bacterium's wall?

Which of the following is true of Fts proteins?

The partition that results from the inward growth of the cell envelope from opposite directions is known as the

Which name refers to having flagella attached at one or both ends of the cell?

Light is harvested by protein complexes called

The bacterial flagellum is a helical protein filament whose ________ motor moves the cell in search of a more favorable environment.

Polar aging of symmetrical bacteria such as E. coli plays a role in stress responses in which of the following ways?

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes in Global Elemental Cycles

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

The structure shown below is found in the of some bacteria and the larger molecules are connected by the cross-link shown at the arrow.