Question 1

Using microbes to break down or remove toxic wastes in water and soil is called

Accepted Answer

A) decomposition. 
B) synergism. 
C) mineralization. 
D) bioremediation. 
E) recycling. 
A) decomposition. 
B) synergism. 
C) mineralization. 
D) bioremediation. 
E) recycling. D

Question 2

An example of a primary consumer would be a

Accepted Answer

A) dog. 
B) cow. 
C) tiger. 
D) mushroom. 
E) None of the above. 
A) dog. 
B) cow. 
C) tiger. 
D) mushroom. 
E) None of the above. B

Question 3

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 the above. 
A) Respiration 
B) Anaerobic microbial activity 
C) Fuel combustion 
D) Volcanic activity 
E) All of the above. E

Question 4

Carbon dioxide, sulfur dioxide, methane, and nitrous oxide are believed to be _____ gases that could disrupt the temperature balance of the earth.

Accepted Answer

The answer of Carbon dioxide, sulfur dioxide, methane, and nitrous...

Question 5

Which of the following regions includes the seashore?

Accepted Answer

A) Littoral zone 
B) Limnetic zone 
C) Photic zone 
D) Benthic zone 
E) Estuary zone 
A) Littoral zone 
B) Limnetic zone 
C) Photic zone 
D) Benthic zone 
E) Estuary zone

Question 6

The niche of an organism includes all of the following, except

Accepted Answer

A) Nutritional intake 
B) Position in the community structure 
C) Rate of population growth 
D) Number of offspring it produces 
E) All of the above. 
A) Nutritional intake 
B) Position in the community structure 
C) Rate of population growth 
D) Number of offspring it produces 
E) All of the above.

Question 7

Bacteria can function in all the following roles in an ecosystem, except as a

Accepted Answer

A) primary producer. 
B) consumer. 
C) decomposer. 
D) parasite. 
E) Bacteria can function in all the roles listed. 
A) primary producer. 
B) consumer. 
C) decomposer. 
D) parasite. 
E) Bacteria can function in all the roles listed.

Question 8

Analysis of a water sample by a series of presumptive, confirmatory, and completed tests that help establish an estimate of coliform numbers in the water is called

Accepted Answer

A) membrane filter method. 
B) most probable number (MPN) procedure. 
C) standard plate count. 
D) coliform determination test. 
E) None of the choices are correct. 
A) membrane filter method. 
B) most probable number (MPN) procedure. 
C) standard plate count. 
D) coliform determination test. 
E) None of the choices are correct.

Question 9

Which of the following can carry out denitrification to completion?

Accepted Answer

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

Question 10

Which of the following is not correct about nitrogen fixation?

Accepted Answer

A) Some nitrogen-fixing bacteria live free. 
B) Some nitrogen-fixing bacteria live in a symbiotic relationship with plants. 
C) Nitrogen-fixation is an aerobic process. 
D) The primary product of nitrogen fixation is ammonium ion, NH4+. 
E) Legumes are plants that are able to fix nitrogen. 
A) Some nitrogen-fixing bacteria live free. 
B) Some nitrogen-fixing bacteria live in a symbiotic relationship with plants. 
C) Nitrogen-fixation is an aerobic process. 
D) The primary product of nitrogen fixation is ammonium ion, NH4+. 
E) Legumes are plants that are able to fix nitrogen.

Question 11

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

Accepted Answer

Bioremediation is the use of microorgani

Question 12

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 13

Which trophic level forms the base of a food chain?

Accepted Answer

A) primary consumers 
B) quarternary consumers 
C) secondary consumers 
D) primary producers 
E) tertiary consumers 
A) primary consumers 
B) quarternary consumers 
C) secondary consumers 
D) primary producers 
E) tertiary consumers

Question 14

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 15

Indicator bacteria are

Accepted Answer

A) coliforms. 
B) gram-negative rods. 
C) evidence of fecal contamination. 
D) used in water quality tests. 
E) All of the choices are correct. 
A) coliforms. 
B) gram-negative rods. 
C) evidence of fecal contamination. 
D) used in water quality tests. 
E) All of the choices are correct.

Question 16

The overall role that a species serves in a community is its

Accepted Answer

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

Question 17

Why do all living things need phosphorus?

Accepted Answer

A) For energy. 
B) It is part of nucleic acids. 
C) It is needed for lipid synthesis. 
D) It is needed for creating the bonds that stabilize proteins. 
E) All of the above. 
A) For energy. 
B) It is part of nucleic acids. 
C) It is needed for lipid synthesis. 
D) It is needed for creating the bonds that stabilize proteins. 
E) All of the above.

Question 18

Which is mismatched?

Accepted Answer

A) parasitism - one organism benefits and the other receives no benefit 
B) competition - one organism gives off substances that inhibit or kill other organisms 
C) predator - seeks out and ingests live prey 
D) scavengers - feed on live to dead cells and wastes 
E) omnivores - feed on plants and flesh 
A) parasitism - one organism benefits and the other receives no benefit 
B) competition - one organism gives off substances that inhibit or kill other organisms 
C) predator - seeks out and ingests live prey 
D) scavengers - feed on live to dead cells and wastes 
E) omnivores - feed on plants and flesh

Question 19

Potable water is

Accepted Answer

A) contaminated. 
B) polluted. 
C) safe to drink. 
D) foul testing. 
E) None of the choices are correct. 
A) contaminated. 
B) polluted. 
C) safe to drink. 
D) foul testing. 
E) None of the choices are correct.

Question 20

The combustion of fossil fuels, such as coal, oil, and gas, have contributed to the steady increase in atmosphere CO2 gas over the last 25 years.

Accepted Answer

A) True 
 B)False

Exam 26: Environmental Microbiology

Using microbes to break down or remove toxic wastes in water and soil is called

An example of a primary consumer would be a

What is the source of CO2 released into the atmosphere?

Carbon dioxide, sulfur dioxide, methane, and nitrous oxide are believed to be _____ gases that could disrupt the temperature balance of the earth.

Which of the following regions includes the seashore?

The niche of an organism includes all of the following, except

Bacteria can function in all the following roles in an ecosystem, except as a

Analysis of a water sample by a series of presumptive, confirmatory, and completed tests that help establish an estimate of coliform numbers in the water is called

Which of the following can carry out denitrification to completion?

Which of the following is not correct about nitrogen fixation?

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

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

Which trophic level forms the base of a food chain?

Which of the following is incorrect about water?

Indicator bacteria are

The overall role that a species serves in a community is its

Why do all living things need phosphorus?

Which is mismatched?

Potable water is

The combustion of fossil fuels, such as coal, oil, and gas, have contributed to the steady increase in atmosphere CO2 gas over the last 25 years.

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

What is the source of CO₂ released into the atmosphere?

The combustion of fossil fuels, such as coal, oil, and gas, have contributed to the steady increase in atmosphere CO₂ gas over the last 25 years.