Question 1

Phytoplankton include:

Accepted Answer

A) cyanobacteria 
B) diatoms 
C) dinoflagellates 
D) all of these choices 
A) cyanobacteria 
B) diatoms 
C) dinoflagellates 
D) all of these choices

Question 2

What is the greenhouse effect? What effect might global warming have on infectious disease?

Accepted Answer

The greenhouse effect is a natural proce

Question 3

Which of the following symptoms is not part of sick building syndrome?

Accepted Answer

A) headache and burning eyes 
B) nosebleeds and skin problems 
C) dizziness and nausea 
D) feeling like there is too much air 
A) headache and burning eyes 
B) nosebleeds and skin problems 
C) dizziness and nausea 
D) feeling like there is too much air

Question 4

Which would not be the habitat for terrestrial species of some microorganisms?

Accepted Answer

A) desert 
B) tundra 
C) tropical rain forest 
D) freshwater lake 
A) desert 
B) tundra 
C) tropical rain forest 
D) freshwater lake

Question 5

What role do microbes play in degradation of plastics?

Accepted Answer

A) Microbes could be used to disintegrate plastics, like soda bottles and disposable diapers. 
B) Bacteria could assist in making biodegradable plastics. 
C) Bacteria could speed up the incineration process. 
D) Two of these choices 
A) Microbes could be used to disintegrate plastics, like soda bottles and disposable diapers. 
B) Bacteria could assist in making biodegradable plastics. 
C) Bacteria could speed up the incineration process. 
D) Two of these choices

Question 6

Denitrification is:

Accepted Answer

A) a process by which nitrates are reduced to nitrous oxide or N₂ 
B) a process by which nitrites are reduced to ammonia 
C) a process by which amino acids are converted to pyruvate 
D) largely due to aerobic environments 
A) a process by which nitrates are reduced to nitrous oxide or N₂ 
B) a process by which nitrites are reduced to ammonia 
C) a process by which amino acids are converted to pyruvate 
D) largely due to aerobic environments

Question 7

Which of the following is used to control the number of microbes in the air?

Accepted Answer

A) UV light 
B) triethylene glycol 
C) cellulose acetate filters 
D) all of these choices 
A) UV light 
B) triethylene glycol 
C) cellulose acetate filters 
D) all of these choices

Question 8

The sulfur cycle is of special importance to:

Accepted Answer

A) terrestrial life 
B) Pseudomonas 
C) proteolytic bacteria 
D) aquatic life 
A) terrestrial life 
B) Pseudomonas 
C) proteolytic bacteria 
D) aquatic life

Question 9

Why are soil microorganisms so important to the nitrogen cycle? Describe the 3 roles bacteria play in the nitrogen cycle.

Accepted Answer

Soil microorganisms are important to the

Question 10

The most problematic yet common form of tertiary treatment of water is:

Accepted Answer

A) chlorine 
B) UV light 
C) ozone 
D) X-rays 
A) chlorine 
B) UV light 
C) ozone 
D) X-rays

Question 11

The mechanism whereby Rhizobium and the legume associate is characterized by all of the following except:

Accepted Answer

A) multiplies in the vicinity of legume roots 
B) bacteria release proteases to digest cell wall 
C) change from free-living to swarmer cells 
D) swarmers invade root hairs to become bacteroids 
A) multiplies in the vicinity of legume roots 
B) bacteria release proteases to digest cell wall 
C) change from free-living to swarmer cells 
D) swarmers invade root hairs to become bacteroids

Question 12

Which is a primary symbiotic nitrogen fixer?

Accepted Answer

A) Azotobacter 
B) Rhizobium 
C) Cyanobacteria 
D) Clostridium 
A) Azotobacter 
B) Rhizobium 
C) Cyanobacteria 
D) Clostridium

Question 13

How does Sphaerotilus interfere with an activated sludge system?

Accepted Answer

A) by coating rocks with a slimy film and decomposing organic matter 
B) by removing flocculating substances 
C) by proliferating and allowing floating matter to carry contaminants into sewage effluent 
D) by converting nitrates to nitrogen gas and blocking the nitrogen stripping tank 
A) by coating rocks with a slimy film and decomposing organic matter 
B) by removing flocculating substances 
C) by proliferating and allowing floating matter to carry contaminants into sewage effluent 
D) by converting nitrates to nitrogen gas and blocking the nitrogen stripping tank

Question 14

The indicator organism for human pathogens in a water supply is:

Accepted Answer

A) Escherichia coli 
B) Salmonella typhi 
C) Poliovirus 
D) Staphylococcus aureus 
A) Escherichia coli 
B) Salmonella typhi 
C) Poliovirus 
D) Staphylococcus aureus

Question 15

Molds in soil serve to:

Accepted Answer

A) aid in decomposition 
B) aid in nitrogen-fixation 
C) form a network with mycelia 
D) two of these choices 
A) aid in decomposition 
B) aid in nitrogen-fixation 
C) form a network with mycelia 
D) two of these choices

Question 16

Which statement about septic tanks is correct?

Accepted Answer

A) Pouring poisons and grease down the drain may kill the tank's beneficial microbes. 
B) Sludge moves continually into a drainage leaching field. 
C) Drainage fields last for more than 50 years. 
D) Two of these choices 
A) Pouring poisons and grease down the drain may kill the tank's beneficial microbes. 
B) Sludge moves continually into a drainage leaching field. 
C) Drainage fields last for more than 50 years. 
D) Two of these choices

Question 17

Nitrogenase is:

Accepted Answer

A) oxygen sensitive 
B) only produced by Rhizobium 
C) a N₂ fixing enzyme 
D) two of these choices 
A) oxygen sensitive 
B) only produced by Rhizobium 
C) a N₂ fixing enzyme 
D) two of these choices

Question 18

The predominant genus of microbe found in ambient air is _____.

Accepted Answer

A) Cladosporium 
B) Bacillus 
C) Staphylococcus 
D) Candida 
A) Cladosporium 
B) Bacillus 
C) Staphylococcus 
D) Candida

Question 19

In the phosphorous cycle,inorganic phosphates are converted to _____,a water-soluble nutrient used by both plants and microorganisms.

Accepted Answer

A) phosphorous 
B) hydrophosphates 
C) orthophosphate 
D) betaphosphate 
A) phosphorous 
B) hydrophosphates 
C) orthophosphate 
D) betaphosphate

Question 20

Sulfur oxidation is carried out by _____.

Accepted Answer

A) Thiobacillus 
B) Desulfovibrio 
C) Desulfomonas 
D) Desulfotomaculum 
A) Thiobacillus 
B) Desulfovibrio 
C) Desulfomonas 
D) Desulfotomaculum

Exam 25: Environmental Microbiology

Phytoplankton include:

What is the greenhouse effect? What effect might global warming have on infectious disease?

Which of the following symptoms is not part of sick building syndrome?

Which would not be the habitat for terrestrial species of some microorganisms?

What role do microbes play in degradation of plastics?

Denitrification is:

Which of the following is used to control the number of microbes in the air?

The sulfur cycle is of special importance to:

Why are soil microorganisms so important to the nitrogen cycle? Describe the 3 roles bacteria play in the nitrogen cycle.

The most problematic yet common form of tertiary treatment of water is:

The mechanism whereby Rhizobium and the legume associate is characterized by all of the following except:

Which is a primary symbiotic nitrogen fixer?

How does Sphaerotilus interfere with an activated sludge system?

The indicator organism for human pathogens in a water supply is:

Molds in soil serve to:

Which statement about septic tanks is correct?

Nitrogenase is:

The predominant genus of microbe found in ambient air is _____.

In the phosphorous cycle,inorganic phosphates are converted to _____,a water-soluble nutrient used by both plants and microorganisms.

Sulfur oxidation is carried out by _____.

Scope and History of Microbiology

Fundamentals of Chemistry

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunology Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Applied Microbiology

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