Question 1

An example of syntrophy is

Accepted Answer

A)  H2 production by one organism linked to H2 consumption by a different organism. 
B)  O2 evolution. 
C)  establishment of the proton motive force. 
D)  ATP production. 
A)  H2 production by one organism linked to H2 consumption by a different organism. 
B)  O2 evolution. 
C)  establishment of the proton motive force. 
D)  ATP production. A

Question 2

Most syntrophic reactions are primary fermentations.

Accepted Answer

A) True 
 B)False  False

Question 3

What group of microorganisms carries out methanogenesis?

Accepted Answer

A)  facultatively aerobic gram- negative Bacteria 
B)  a group of strictly anaerobic Archaea 
C)  gram- positive Bacteria 
D)  a group of strictly anaerobic gram- negative Bacteria 
A)  facultatively aerobic gram- negative Bacteria 
B)  a group of strictly anaerobic Archaea 
C)  gram- positive Bacteria 
D)  a group of strictly anaerobic gram- negative Bacteria B

Question 4

The Entner- Doudoroff pathway is a variant of traditional glycolysis, where

Accepted Answer

A)  both ATP and NADPH yields are double relative to glycolysis. 
B)  ATP yield is double and NADPH yield is half relative to glycolysis. 
C)  both ATP and NADPH yields are half of glycolysis. 
D)  ATP yield is half and NADPH yield is double relative to glycolysis. 
A)  both ATP and NADPH yields are double relative to glycolysis. 
B)  ATP yield is double and NADPH yield is half relative to glycolysis. 
C)  both ATP and NADPH yields are half of glycolysis. 
D)  ATP yield is half and NADPH yield is double relative to glycolysis.

Question 5

Many pseudomonads use __________ for catabolism of sugars.

Accepted Answer

the Entner

Question 6

Some of the most common electron acceptors in anaerobic respiration is/are

Accepted Answer

A)  inorganic acids. 
B)  inorganic nitrogen compounds. 
C)  carbon dioxide. 
D)  inorganic sulfur compounds. 
A)  inorganic acids. 
B)  inorganic nitrogen compounds. 
C)  carbon dioxide. 
D)  inorganic sulfur compounds.

Question 7

The biological production of methane is known as_________.

Accepted Answer

The answer of The biological production of methane is known...

Question 8

All acetogens reduce CO2 to acetate by the

Accepted Answer

A)  hydroxypropionate pathway. 
B)  acetyl- CoA pathway. 
C)  Calvin cycle. 
D)  reverse citric acid cycle. 
A)  hydroxypropionate pathway. 
B)  acetyl- CoA pathway. 
C)  Calvin cycle. 
D)  reverse citric acid cycle.

Question 9

Explain how cell aggregates in marine sediments oxidize methane under anoxic conditions. Also mention what qualitative level of energy this process yields.

Accepted Answer

Methane can become oxidized in the absen

Question 10

Using Desulfovibrio sulfodismutans as an example, explain the form of energy metabolism known as disproportionation.

Accepted Answer

D. sulfodismutans converts thiosulfate (

Question 11

What product is energy conserving during anaerobic fermentation because it allows the organism to make ATP by substrate- level phosphorylation?

Accepted Answer

A)  pyruvate 
B)  acetate 
C)  hydrogen 
D)  glucose 
A)  pyruvate 
B)  acetate 
C)  hydrogen 
D)  glucose

Question 12

A number of bacteria and several molds and yeasts can use hydrocarbons as electron donors to support growth under aerobic conditions.

Accepted Answer

A) True 
 B)False

Question 13

When growing autotrophically from H2, sulfate reducers use the acetyl- CoA pathway that incorporates CO2 into the cell.

Accepted Answer

A) True 
 B)False

Question 14

The fermentation of certain compounds yields insufficient energy to synthesize ATP by substrate- level phosphorylation, yet energy conservation leading to ATP synthesis still occurs.

Accepted Answer

A) True 
 B)False

Question 15

TMAO and DMSO are both organic electron _________that are found in_________ environments.

Accepted Answer

The answer of TMAO and DMSO are both organic electron...

Question 16

Oxygenases are enzymes that catalyze incorporation of oxygen atoms from O2 into organic compounds.

Accepted Answer

A) True 
 B)False

Question 17

Beta oxidation involves the

Accepted Answer

A)  synthesis of a series of two- carbon compounds. 
B)  splitting of hexoses into two- carbon units. 
C)  production of disaccharides. 
D)  cleaving of two- carbon units from fatty acid chains. 
A)  synthesis of a series of two- carbon compounds. 
B)  splitting of hexoses into two- carbon units. 
C)  production of disaccharides. 
D)  cleaving of two- carbon units from fatty acid chains.

Question 18

Explain how human health can be influenced by the presence or absence of Oxalobacter formigenes.

Accepted Answer

An accumulation of calcium oxa

Question 19

In fermentation, ATP is typically synthesized by substrate- level phosphorylation.

Accepted Answer

A) True 
 B)False

Question 20

When adequate supplies of electron acceptors are not available in anoxic microbial environments, organic compounds will be catabolized by_________ .

Accepted Answer

The answer of When adequate supplies of electron acceptors are...

Exam 14: Catabolism of Organic Compounds

An example of syntrophy is

Most syntrophic reactions are primary fermentations.

What group of microorganisms carries out methanogenesis?

The Entner- Doudoroff pathway is a variant of traditional glycolysis, where

Many pseudomonads use __________ for catabolism of sugars.

Some of the most common electron acceptors in anaerobic respiration is/are

The biological production of methane is known as_________.

All acetogens reduce CO2 to acetate by the

Explain how cell aggregates in marine sediments oxidize methane under anoxic conditions. Also mention what qualitative level of energy this process yields.

Using Desulfovibrio sulfodismutans as an example, explain the form of energy metabolism known as disproportionation.

What product is energy conserving during anaerobic fermentation because it allows the organism to make ATP by substrate- level phosphorylation?

A number of bacteria and several molds and yeasts can use hydrocarbons as electron donors to support growth under aerobic conditions.

When growing autotrophically from H2, sulfate reducers use the acetyl- CoA pathway that incorporates CO2 into the cell.

The fermentation of certain compounds yields insufficient energy to synthesize ATP by substrate- level phosphorylation, yet energy conservation leading to ATP synthesis still occurs.

TMAO and DMSO are both organic electron _________that are found in_________ environments.

Oxygenases are enzymes that catalyze incorporation of oxygen atoms from O2 into organic compounds.

Beta oxidation involves the

Explain how human health can be influenced by the presence or absence of Oxalobacter formigenes.

In fermentation, ATP is typically synthesized by substrate- level phosphorylation.

When adequate supplies of electron acceptors are not available in anoxic microbial environments, organic compounds will be catabolized by_________ .

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Cell Structure and Function in Bacteria and Archaea

Nutrition, Culture, and Metabolism of Microorganisms

Microbial Growth

Molecular Biology of Bacteria

Archael and Eukaryotic Molecular Biology

Regulation of Gene Expression

Viruses and Virology

Genetics of Bacteria and Arachaea

Genetic Engineering

Microbial Genomics

Phototrophy, Chemolithotrophy, and Major Biosyntheses

Commercial Products and Biotechnology

Microbial Evolution and Systematics

Bacteria: the Proteobacteria

Other Bacteria

Archaea

Eukaryotic Cell Biology and Eukaryotic Microorganisms

Viral Diversity

Methods in Microbial Ecology

Major Microbial Habitats and Diversity

Nutrient Cycles, Biodegradation, and Bioremediation

Microbial Symbioses

Microbial Growth Control

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology and Immunology

Epidemiology

Person-To-Person Microbial Diseases

Vectorborne and Soilborne Microbial Pathogens

Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

Food Preservation and Foodborne Microbial Diseases

Filters

All acetogens reduce CO₂ to acetate by the

TMAO and DMSO are both organic electron _that are found in_ environments.