Question 1

NADH has more reducing power than FADH2, therefore __________.

Accepted Answer

A)  oxidation of NADH will contribute to form a larger $\Delta$p and more ATP 
B)  both FADH2 and NADH can be used by respiratory ETS, but FADH2 will produce a lower ATP yield 
C)  the NADH + H+/NAD+ redox pair has a more negative E°' value than the FAD/FADH2 pair 
D)  all of the above 
E)  none of the above 
A)  oxidation of NADH will contribute to form a larger $\Delta$p and more ATP 
B)  both FADH2 and NADH can be used by respiratory ETS, but FADH2 will produce a lower ATP yield 
C)  the NADH + H+/NAD+ redox pair has a more negative E°' value than the FAD/FADH2 pair 
D)  all of the above 
E)  none of the above

Question 2

Alkaliphiles maintain an inverted pH gradient in which:

Accepted Answer

A)  the pH in their immediate environment is lower than the cytoplasmic pH 
B)  their immediate environment has a pH several units above that of the cytoplasm 
C)  pH in the immediate environment is equal to that of the cytoplasm 
D)  all of the above 
E)  none of the above 
A)  the pH in their immediate environment is lower than the cytoplasmic pH 
B)  their immediate environment has a pH several units above that of the cytoplasm 
C)  pH in the immediate environment is equal to that of the cytoplasm 
D)  all of the above 
E)  none of the above

Question 3

Some pathogenic bacteria use __________ to expel antibiotics from the cell.

Accepted Answer

A)  proton-driven efflux pumps 
B)  sugar or amino acid inward carriers 
C)  heme cofactors 
D)  all of the above 
E)  none of the above 
A)  proton-driven efflux pumps 
B)  sugar or amino acid inward carriers 
C)  heme cofactors 
D)  all of the above 
E)  none of the above

Question 4

Electricity production by metal-reducing bacteria is a possibility. Describe how a metal with multiple redox states can be used to produce an electrical current.

Accepted Answer

Any metal with multiple redox states, su

Question 5

Which of the following is NOT a terminal electron acceptor in anaerobic respirations?

Accepted Answer

A)  nitrate 
B)  nitrite 
C)  sulfate 
D)  carbon dioxide 
E)  hydrogen sulfide 
A)  nitrate 
B)  nitrite 
C)  sulfate 
D)  carbon dioxide 
E)  hydrogen sulfide

Question 6

Explain what kind of reaction bacteriorhodopsin performs and what it accomplishes for the cell. What is the name of the bacteriorhodopsin homologs, in what type of organisms were they identified, and what led to their discovery?

Accepted Answer

Bacteriorhodopsin absorbs light and goes

Question 7

The anammox reaction consists of:

Accepted Answer

A)  reduction of sulfate by ammonia 
B)  reduction of ammonium to form nitrite 
C)  anaerobic ammonium oxidation by nitrite 
D)  reduction of ammonium by oxygen 
E)  the use of ammonium in amino acid biosynthesis 
A)  reduction of sulfate by ammonia 
B)  reduction of ammonium to form nitrite 
C)  anaerobic ammonium oxidation by nitrite 
D)  reduction of ammonium by oxygen 
E)  the use of ammonium in amino acid biosynthesis

Question 8

What membrane system are electron transport systems embedded in?

Accepted Answer

A)  mitochondrial inner membrane 
B)  thylakoids 
C)  the inner membrane of Gram-negative bacteria 
D)  all of the above 
E)  none of the above 
A)  mitochondrial inner membrane 
B)  thylakoids 
C)  the inner membrane of Gram-negative bacteria 
D)  all of the above 
E)  none of the above

Question 9

In cytochromes, the heme group plays a key role in acquiring and transferring electrons with a(n) __________ transition.

Accepted Answer

A)  Mg0/Mg2+ 
B)  S0/S2- 
C)  Cu+/C2+ 
D)  Fe2+/Fe3+ 
E)  none of the above 
A)  Mg0/Mg2+ 
B)  S0/S2- 
C)  Cu+/C2+ 
D)  Fe2+/Fe3+ 
E)  none of the above

Question 10

Electron donors for anaerobic photosystem I in "green sulfur" bacteria include __________.

Accepted Answer

A)  H2S 
B)  organic molecules 
C)  Fe2+ 
D)  all of the above 
E)  none of the above 
A)  H2S 
B)  organic molecules 
C)  Fe2+ 
D)  all of the above 
E)  none of the above

NADH has more reducing power than FADH₂, therefore __________.

Alkaliphiles maintain an inverted pH gradient in which:

Some pathogenic bacteria use __________ to expel antibiotics from the cell.

Electricity production by metal-reducing bacteria is a possibility. Describe how a metal with multiple redox states can be used to produce an electrical current.

Which of the following is NOT a terminal electron acceptor in anaerobic respirations?

Explain what kind of reaction bacteriorhodopsin performs and what it accomplishes for the cell. What is the name of the bacteriorhodopsin homologs, in what type of organisms were they identified, and what led to their discovery?

The anammox reaction consists of:

What membrane system are electron transport systems embedded in?

In cytochromes, the heme group plays a key role in acquiring and transferring electrons with a(n) __________ transition.

Electron donors for anaerobic photosystem I in "green sulfur" bacteria include __________.

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Virus Structure and Function

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Molecular Techniques and Biotechnology

Energetics and Catabolism

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes and the Global Environment

Human Microbiota and Nonspecific Host Defenses

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Chemotherapy

Clinical Microbiology and Epidemiology

Filters

Exam 14: Respiration, Lithotrophy, and Photolysis

NADH has more reducing power than FADH2, therefore __________.

Alkaliphiles maintain an inverted pH gradient in which:

Some pathogenic bacteria use __________ to expel antibiotics from the cell.

Electricity production by metal-reducing bacteria is a possibility. Describe how a metal with multiple redox states can be used to produce an electrical current.

Which of the following is NOT a terminal electron acceptor in anaerobic respirations?

Explain what kind of reaction bacteriorhodopsin performs and what it accomplishes for the cell. What is the name of the bacteriorhodopsin homologs, in what type of organisms were they identified, and what led to their discovery?

The anammox reaction consists of:

What membrane system are electron transport systems embedded in?

In cytochromes, the heme group plays a key role in acquiring and transferring electrons with a(n) __________ transition.

Electron donors for anaerobic photosystem I in "green sulfur" bacteria include __________.

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Virus Structure and Function

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Molecular Techniques and Biotechnology

Energetics and Catabolism

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes and the Global Environment

Human Microbiota and Nonspecific Host Defenses

The Adaptive Immune Response

Microbial Pathogenesis

Microbial Diseases

Antimicrobial Chemotherapy

Clinical Microbiology and Epidemiology

Filters

NADH has more reducing power than FADH₂, therefore __________.