Question 1

Which of the following are roles played by microbes in aquatic ecosystems?

Accepted Answer

A) producers 
B) primary consumers 
C) decomposers 
D) mineralizers 
E) All of these choices are correct. 
A) producers 
B) primary consumers 
C) decomposers 
D) mineralizers 
E) All of these choices are correct.

Question 2

Mycorrhizae are the mutualistic partnership between fungi and the roots of certain plants.

Accepted Answer

A) True 
 B)False

Question 3

Thiobacillus thiooxidans is found in an environmental sample.Which of the following should then apply to this sample?

Accepted Answer

A) The sample contains lithotrophs. 
B) The sample is very acidic. 
C) The sample contains microbes that oxidize sulfur to sulfates. 
D) All of these choices are correct. 
A) The sample contains lithotrophs. 
B) The sample is very acidic. 
C) The sample contains microbes that oxidize sulfur to sulfates. 
D) All of these choices are correct.

Question 4

Potable water is

Accepted Answer

A) contaminated. 
B) polluted. 
C) safe to drink. 
D) foul testing. 
A) contaminated. 
B) polluted. 
C) safe to drink. 
D) foul testing.

Question 5

The oxidation of ammonia (NH4+) to nitrate (NO3 ) is called

Accepted Answer

A) ammonification. 
B) nitrogen fixation. 
C) photosynthesis. 
D) nitrification. 
E) denitrification. 
A) ammonification. 
B) nitrogen fixation. 
C) photosynthesis. 
D) nitrification. 
E) denitrification.

Question 6

In a large body of standing water, which area exists between the hypolimnion and the epilimnion?

Accepted Answer

A) thermocline 
B) photic 
C) limnetic 
D) littoral 
E) profundal 
A) thermocline 
B) photic 
C) limnetic 
D) littoral 
E) profundal

Question 7

Discuss and give several examples of the use of microbes in bioremediation.

Accepted Answer

Bioremediation is the use of microorgani

Question 8

Which organism is a nitrogen-fixing symbiont of legumes?

Accepted Answer

A) Rhizobium 
B) Nitrobacter 
C) Pseudomonas 
D) Nostoc 
E) Azotobacter 
A) Rhizobium 
B) Nitrobacter 
C) Pseudomonas 
D) Nostoc 
E) Azotobacter

Question 9

The conversion of nitrate (NO3 ) to nitrogen gas (N2) is called

Accepted Answer

A) ammonification. 
B) nitrogen fixation. 
C) photosynthesis. 
D) nitrification. 
E) denitrification. 
A) ammonification. 
B) nitrogen fixation. 
C) photosynthesis. 
D) nitrification. 
E) denitrification.

Question 10

Consider a pond on your college campus.All of the organisms that live in the pond, including bacteria, protozoa, algae, plants and animals, represent a/an

Accepted Answer

A) ecosystem. 
B) population. 
C) niche. 
D) community. 
E) habitat. 
A) ecosystem. 
B) population. 
C) niche. 
D) community. 
E) habitat.

Question 11

Differentiate between the following terms and provide an example for each: mutualism, communalism, synergism, parasitism.

Accepted Answer

Mutualism is a type of symbiotic relatio

Question 12

The energy of photons is converted into chemical energy during

Accepted Answer

A) ammonification. 
B) nitrogen fixation. 
C) photosynthesis. 
D) nitrification. 
E) denitrification. 
A) ammonification. 
B) nitrogen fixation. 
C) photosynthesis. 
D) nitrification. 
E) denitrification.

Question 13

The slowly decaying organic litter from plant and animal tissues that is found in the soil is called _____.

Accepted Answer

The answer of The slowly decaying organic litter from plant...

Question 14

What is the source of CO2 released into the atmosphere?

Accepted Answer

A) respiration 
B) anaerobic microbial activity 
C) fuel combustion 
D) volcanic activity 
E) All of these choices are correct. 
A) respiration 
B) anaerobic microbial activity 
C) fuel combustion 
D) volcanic activity 
E) All of these choices are correct.

Question 15

An _____ is a region where the river meets the sea.

Accepted Answer

The answer of An _____ is a region where the...

Question 16

Which of the following are sources of greenhouse gases?

Accepted Answer

A) gastrointestinal tract of ruminants 
B) combustion of fossil fuels 
C) burning forests to clear agricultural land 
D) decaying vegetation in swamps 
E) All of these choices are correct. 
A) gastrointestinal tract of ruminants 
B) combustion of fossil fuels 
C) burning forests to clear agricultural land 
D) decaying vegetation in swamps 
E) All of these choices are correct.

Question 17

Nutrient deficient ecosystems are called ___________.

Accepted Answer

The answer of Nutrient deficient ecosystems are called ___________....

Question 18

The science called microbial _____ studies interactions between microbes and their environment and how those interactions affect the Earth.

Accepted Answer

The answer of The science called microbial _____ studies interactions...

Question 19

In a synergistic relationship, the action of one microbe favorably affects another, but the first microbe receives no benefit.

Accepted Answer

A) True 
 B)False

Question 20

The sediment in a lake, composed of organic debris and mud, is termed the

Accepted Answer

A) photic zone. 
B) benthic zone. 
C) profundal zone. 
D) littoral zone. 
E) limnetic zone. 
A) photic zone. 
B) benthic zone. 
C) profundal zone. 
D) littoral zone. 
E) limnetic zone.

Exam 26: Environmental Microbiology

Which of the following are roles played by microbes in aquatic ecosystems?

Mycorrhizae are the mutualistic partnership between fungi and the roots of certain plants.

Thiobacillus thiooxidans is found in an environmental sample.Which of the following should then apply to this sample?

Potable water is

The oxidation of ammonia (NH4+) to nitrate (NO3 ) is called

In a large body of standing water, which area exists between the hypolimnion and the epilimnion?

Discuss and give several examples of the use of microbes in bioremediation.

Which organism is a nitrogen-fixing symbiont of legumes?

The conversion of nitrate (NO3 ) to nitrogen gas (N2) is called

Consider a pond on your college campus.All of the organisms that live in the pond, including bacteria, protozoa, algae, plants and animals, represent a/an

Differentiate between the following terms and provide an example for each: mutualism, communalism, synergism, parasitism.

The energy of photons is converted into chemical energy during

The slowly decaying organic litter from plant and animal tissues that is found in the soil is called _____.

What is the source of CO2 released into the atmosphere?

An _____ is a region where the river meets the sea.

Which of the following are sources of greenhouse gases?

Nutrient deficient ecosystems are called ___________.

The science called microbial _____ studies interactions between microbes and their environment and how those interactions affect the Earth.

In a synergistic relationship, the action of one microbe favorably affects another, but the first microbe receives no benefit.

The sediment in a lake, composed of organic debris and mud, is termed the

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host--The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Fungi of Medical Importance

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Applied and Industrial Microbiology

Filters

The oxidation of ammonia (NH₄⁺) to nitrate (NO₃ ) is called

The conversion of nitrate (NO₃ ) to nitrogen gas (N₂) is called

What is the source of CO₂ released into the atmosphere?