Question 1

Microbes in the environment can be

Accepted Answer

A)  producers 
B)  consumers 
C)  decomposers 
D)  all of the above 
A)  producers 
B)  consumers 
C)  decomposers 
D)  all of the above

Question 2

Soil contains human pathogens,for instance

Accepted Answer

A)  Clostridium tetani 
B)  Bacillus anthracis 
C)  Clostridium perfringens 
D)  all of the above 
A)  Clostridium tetani 
B)  Bacillus anthracis 
C)  Clostridium perfringens 
D)  all of the above

Question 3

Which of the following statements about extreme environments is incorrect?

Accepted Answer

A)  hydrothermal vents can reach temperatures up to 350° C 
B)  hydrothermal fluids contain mixed communities of eubacteria and archaea 
C)  bacteria involved in anaerobic oxidation of methane are rare in samples 
D)  in different zones of a chimney wall there are different communities of microbes 
A)  hydrothermal vents can reach temperatures up to 350° C 
B)  hydrothermal fluids contain mixed communities of eubacteria and archaea 
C)  bacteria involved in anaerobic oxidation of methane are rare in samples 
D)  in different zones of a chimney wall there are different communities of microbes

Question 4

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 5

How do the ONPG and MUG test detect microorganisms in water?

Accepted Answer

A)  color is changed by enzymes secreted by coliform bacteria 
B)  gas production in cultures of lactose broth 
C)  observing dark colonies of coliform organisms on EMB-lactose agar 
D)  colonies forming on surface of a sterile absorbent pad 
A)  color is changed by enzymes secreted by coliform bacteria 
B)  gas production in cultures of lactose broth 
C)  observing dark colonies of coliform organisms on EMB-lactose agar 
D)  colonies forming on surface of a sterile absorbent pad

Question 6

Nitrification is characterized by all of the following except

Accepted Answer

A)  carried out by autotrophic bacteria 
B)  supplies plants with a usable nitrogen source 
C)  produces ammonia 
D)  nitrogen is oxidized in both of the two steps 
A)  carried out by autotrophic bacteria 
B)  supplies plants with a usable nitrogen source 
C)  produces ammonia 
D)  nitrogen is oxidized in both of the two steps

Question 7

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 in the floating matter that contaminates the 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 in the floating matter that contaminates the effluent 
D)  by converting nitrates to nitrogen gas and blocking the nitrogen stripping tank

Question 8

Which term is matched with its definition?

Accepted Answer

A)  biotic factors - interaction of organisms with other organisms 
B)  ecology - all organisms in a given area with abiotic and biotic factors 
C)  ecosystem - organisms that are always found in a given environment 
D)  niche - recycling of life-essential elements and water 
A)  biotic factors - interaction of organisms with other organisms 
B)  ecology - all organisms in a given area with abiotic and biotic factors 
C)  ecosystem - organisms that are always found in a given environment 
D)  niche - recycling of life-essential elements and water

Question 9

Phytoplankton include

Accepted Answer

A)  cyanobacterteria 
B)  diatoms 
C)  dinoflagellates 
D)  all of the above 
A)  cyanobacterteria 
B)  diatoms 
C)  dinoflagellates 
D)  all of the above

Question 10

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 11

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 12

Which bacteria is found in the desert and is an oil eating bacteria?

Accepted Answer

A)  Halobacterium 
B)  Desulfurovibrio 
C)  Thiobacillus 
D)  Arthrobacter 
A)  Halobacterium 
B)  Desulfurovibrio 
C)  Thiobacillus 
D)  Arthrobacter

Question 13

The primary producers in the ocean are

Accepted Answer

A)  bacteria 
B)  viruses 
C)  phytoplankton 
D)  two of the above 
A)  bacteria 
B)  viruses 
C)  phytoplankton 
D)  two of the above

Question 14

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 15

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

Accepted Answer

During the nitrogen cycle,nitrogen is br

Question 16

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 17

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

Accepted Answer

Carbon dioxide generated from coal and o

Question 18

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 the above 
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 the above

Question 19

Which term has been incorrectly matched?

Accepted Answer

A)  biogeochemical cycles - recycling of life-essential elements and water 
B)  nitrogenase - functional nitrogen-fixing enzyme 
C)  swarmer cells - organisms that can invade waterlogged soils 
D)  nitrate - form of nitrogen most usable in plant metabolism 
A)  biogeochemical cycles - recycling of life-essential elements and water 
B)  nitrogenase - functional nitrogen-fixing enzyme 
C)  swarmer cells - organisms that can invade waterlogged soils 
D)  nitrate - form of nitrogen most usable in plant metabolism

Question 20

Which of the following microbes is not a producer in the environment?

Accepted Answer

A)  photosynthetic bacteria 
B)  heterotrophic bacteria 
C)  cyanobacteria 
D)  protista 
A)  photosynthetic bacteria 
B)  heterotrophic bacteria 
C)  cyanobacteria 
D)  protista

Exam 25: Environmental Microbiology

Microbes in the environment can be

Soil contains human pathogens,for instance

Which of the following statements about extreme environments is incorrect?

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

How do the ONPG and MUG test detect microorganisms in water?

Nitrification is characterized by all of the following except

How does Sphaerotilus interfere with an activated sludge system?

Which term is matched with its definition?

Phytoplankton include

Which is a primary symbiotic nitrogen fixer?

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

Which bacteria is found in the desert and is an oil eating bacteria?

The primary producers in the ocean are

The predominant genus of microbe found in ambient air is

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

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

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

What role do microbes play in degradation of plastics

Which term has been incorrectly matched?

Which of the following microbes is not a producer in the environment?

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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