Question 1

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 is pumped continually into a drainage leaching field 
C)  drainage fields last for more than 50 years 
D)  two of the above 
A)  pouring poisons and grease down the drain may kill the tank's beneficial microbes 
B)  sludge is pumped continually into a drainage leaching field 
C)  drainage fields last for more than 50 years 
D)  two of the above

Question 2

Which of the following statements about biogeochemical cycles is true?

Accepted Answer

A)  not all living microbes require carbon 
B)  nitrogen fixing bacteria must be in association with legumes 
C)  Thiobacillus oxidizes hydrogen sulfide to sulfuric acid 
D)  Cyanobacteria are the primary symbiotic nitrogen fixer 
A)  not all living microbes require carbon 
B)  nitrogen fixing bacteria must be in association with legumes 
C)  Thiobacillus oxidizes hydrogen sulfide to sulfuric acid 
D)  Cyanobacteria are the primary symbiotic nitrogen fixer

Question 3

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 4

The most usable form of sulfur by microorganisms and plants is

Accepted Answer

A)  sulfide 
B)  sulfate 
C)  hydrogen sulfide 
D)  sulfhydryl 
A)  sulfide 
B)  sulfate 
C)  hydrogen sulfide 
D)  sulfhydryl

Question 5

Eutrophication leads to

Accepted Answer

A)  a decrease in oxygen 
B)  plants become very dense 
C)  abundant nutrient enrichment 
D)  all of the above 
A)  a decrease in oxygen 
B)  plants become very dense 
C)  abundant nutrient enrichment 
D)  all of the above

Question 6

The trickling filter system employs a bed of rocks that have been coated with

Accepted Answer

A)  Sphaerotilus 
B)  Pseudomonas 
C)  Beggiatoa 
D)  two of the above 
A)  Sphaerotilus 
B)  Pseudomonas 
C)  Beggiatoa 
D)  two of the above

Question 7

Most denitrification is due to

Accepted Answer

A)  Rhizobium 
B)  Azotobacter 
C)  Pseudomonas 
D)  Nitrosomonas 
A)  Rhizobium 
B)  Azotobacter 
C)  Pseudomonas 
D)  Nitrosomonas

Question 8

Nitrogenase is

Accepted Answer

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

Question 9

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 the above 
A)  UV light 
B)  triethylene glycol 
C)  cellulose acetate filters 
D)  all of the above

Question 10

Cytophaga,found in soil,is characterized by

Accepted Answer

A)  being a fungus 
B)  cellulose degradation 
C)  being strictly aerobic 
D)  being a protozoan decomposer 
A)  being a fungus 
B)  cellulose degradation 
C)  being strictly aerobic 
D)  being a protozoan decomposer

Question 11

Tertiary treatment of sewage could include

Accepted Answer

A)  chlorine 
B)  UV light 
C)  ozone 
D)  all of the above 
A)  chlorine 
B)  UV light 
C)  ozone 
D)  all of the above

Question 12

Which of the following statements about ecology is incorrect?

Accepted Answer

A)  biosphere consists of three layers- the hydrosphere, lithosphere and atmosphere 
B)  communities with many populations of organisms are more stable than those with fewer populations 
C)  vegetative cells must have water 
D)  the sun is the ultimate source of energy for all organisms in any ecosystem 
A)  biosphere consists of three layers- the hydrosphere, lithosphere and atmosphere 
B)  communities with many populations of organisms are more stable than those with fewer populations 
C)  vegetative cells must have water 
D)  the sun is the ultimate source of energy for all organisms in any ecosystem

Question 13

A niche includes all of the following except

Accepted Answer

A)  the taxonomy of an organism 
B)  the role an organism plays in the ecosystem 
C)  an organism's use of abiotic factors in its environment 
D)  the interactions an organism has with other organisms 
A)  the taxonomy of an organism 
B)  the role an organism plays in the ecosystem 
C)  an organism's use of abiotic factors in its environment 
D)  the interactions an organism has with other organisms

Which statement about septic tanks is correct?

Which of the following statements about biogeochemical cycles is true?

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

The most usable form of sulfur by microorganisms and plants is

Eutrophication leads to

The trickling filter system employs a bed of rocks that have been coated with

Most denitrification is due to

Nitrogenase is

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

Cytophaga,found in soil,is characterized by

Tertiary treatment of sewage could include

Which of the following statements about ecology is incorrect?

A niche includes all of the following except

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

Immunolgy 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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Exam 25: Environmental Microbiology

Which statement about septic tanks is correct?

Which of the following statements about biogeochemical cycles is true?

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

The most usable form of sulfur by microorganisms and plants is

Eutrophication leads to

The trickling filter system employs a bed of rocks that have been coated with

Most denitrification is due to

Nitrogenase is

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

Cytophaga,found in soil,is characterized by

Tertiary treatment of sewage could include

Which of the following statements about ecology is incorrect?

A niche includes all of the following except

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

Immunolgy 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

Filters