Question 1

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 2

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.

Question 3

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 
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

Question 4

A ___________ is a form of consumer that actively seeks out and ingests live prey.

Accepted Answer

The answer of A ___________ is a form of consumer...

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

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 7

The terrestrial realm of the biosphere is distributed into particular climatic regions called

Accepted Answer

A) niches. 
B) habitats. 
C) populations. 
D) communities. 
E) biomes. 
A) niches. 
B) habitats. 
C) populations. 
D) communities. 
E) biomes.

Question 8

A food web is generally simpler to visualize than a food chain.

Accepted Answer

A) True 
 B)False

Question 9

Nutrient deficient ecosystems are called ___________.

Accepted Answer

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

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

Bioremediation is the use of microorgani

Question 12

Living or dead organisms that occupy an organism's habitat are called biotic factors.

Accepted Answer

A) True 
 B)False

Question 13

Some bacteria, such as Desulfovibrio, are able to reduce sulfates to hydrogen sulfide as the final step in the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

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

Question 15

Which of the following is a nitrifying microbe?

Accepted Answer

A) Nitrosospira 
B) Nitrosobacter 
C) Nitrosococcus 
D) Nitrosomonas 
E) All of the above. 
A) Nitrosospira 
B) Nitrosobacter 
C) Nitrosococcus 
D) Nitrosomonas 
E) All of the above.

Question 16

The primary role of producers is to recycle nutrients in an ecosystem.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is incorrect about water?

Accepted Answer

A) When a water quality test is negative for coliforms, it is considered fit for human consumption. 
B) There is no acceptable level for fecal coliforms, enterococci, viruses, or pathogenic protozoans in drinking water. 
C) The (Most Probable Number) MPN specifically detects fecal coliforms. 
D) The membrane filter method is a widely used rapid method to test large quantities of water for quality. 
E) Finding coliforms in high numbers indicates fecal contamination of the water. 
A) When a water quality test is negative for coliforms, it is considered fit for human consumption. 
B) There is no acceptable level for fecal coliforms, enterococci, viruses, or pathogenic protozoans in drinking water. 
C) The (Most Probable Number) MPN specifically detects fecal coliforms. 
D) The membrane filter method is a widely used rapid method to test large quantities of water for quality. 
E) Finding coliforms in high numbers indicates fecal contamination of the water.

Question 18

Which of the following is not a greenhouse gas?

Accepted Answer

A) Carbon dioxide (CO2) 
B) Sulfur dioxide (SO2) 
C) Methane (CH4) 
D) Ammonia (NH4) 
E) All of these are green house gasses. 
A) Carbon dioxide (CO2) 
B) Sulfur dioxide (SO2) 
C) Methane (CH4) 
D) Ammonia (NH4) 
E) All of these are green house gasses.

Question 19

The conversion of gaseous nitrogen (N2) to the ammonium ion (NH4+) occurs 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 20

Eutrophication

Accepted Answer

A) encourages heavy surface algal blooms. 
B) can block the O2 supply to the lake. 
C) occurs when there are excess nutrients in aquatic ecosystems. 
D) causes massive die-off of fish and invertebrates. 
E) All of the choices are correct. 
A) encourages heavy surface algal blooms. 
B) can block the O2 supply to the lake. 
C) occurs when there are excess nutrients in aquatic ecosystems. 
D) causes massive die-off of fish and invertebrates. 
E) All of the choices are correct.

Exam 26: Environmental Microbiology

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

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

Which of the following are sources of greenhouse gases?

A ___________ is a form of consumer that actively seeks out and ingests live prey.

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

Which organism is a nitrogen fixing symbiont of legumes?

The terrestrial realm of the biosphere is distributed into particular climatic regions called

A food web is generally simpler to visualize than a food chain.

Nutrient deficient ecosystems are called ___________.

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

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

Living or dead organisms that occupy an organism's habitat are called biotic factors.

Some bacteria, such as Desulfovibrio, are able to reduce sulfates to hydrogen sulfide as the final step in the electron transport chain.

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

Which of the following is a nitrifying microbe?

The primary role of producers is to recycle nutrients in an ecosystem.

Which of the following is incorrect about water?

Which of the following is not a greenhouse gas?

The conversion of gaseous nitrogen (N2) to the ammonium ion (NH4+) occurs during

Eutrophication

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

An Introduction to 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, Disease, and Epidemiology

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 gaseous nitrogen (N₂) to the ammonium ion (NH₄⁺) occurs during