Question 1

What are the consequences of heat acting as a water pollutant

Accepted Answer

A) causes silting of waterways 
B) reduces light reaching plants in water 
C) increases the salinity and acidity of water 
D) alters habitats and kinds of organisms present 
A) causes silting of waterways 
B) reduces light reaching plants in water 
C) increases the salinity and acidity of water 
D) alters habitats and kinds of organisms present D

Question 2

What results from the biological oxygen demand (BOD)being high and the water becoming anaerobic

Accepted Answer

A) a more efficient decomposition of wastes 
B) increased need for sulfur 
C) decreased need for carbon 
D) death of most members of any ecosystem 
A) a more efficient decomposition of wastes 
B) increased need for sulfur 
C) decreased need for carbon 
D) death of most members of any ecosystem D

Question 3

Tertiary treatment of sewage could include:

Accepted Answer

A) chlorine 
B) UV light 
C) ozone 
D) all of these choices 
A) chlorine 
B) UV light 
C) ozone 
D) all of these choices D

Question 4

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

Accepted Answer

A) photosynthetic bacteria 
B) heterotrophic bacteria 
C) cyanobacteria 
D) protista 
E) two of these choices 
A) photosynthetic bacteria 
B) heterotrophic bacteria 
C) cyanobacteria 
D) protista 
E) two of these choices

Question 5

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 6

The loss of water from pores of plant leaves is called:

Accepted Answer

A) transpiration 
B) respiration 
C) evaporation 
D) two of these choices 
A) transpiration 
B) respiration 
C) evaporation 
D) two of these choices

Question 7

Which of the following statements about soil is false

Accepted Answer

A) anywhere in the soil you can find snottites 
B) viruses can be used for biocontrol of insect pests in soil 
C) humus is the nonliving organic matter in soil 
D) carbon in the soil is continuously recycled 
A) anywhere in the soil you can find snottites 
B) viruses can be used for biocontrol of insect pests in soil 
C) humus is the nonliving organic matter in soil 
D) carbon in the soil is continuously recycled

Question 8

Microbes in the environment can be _____.

Accepted Answer

A) producers 
B) consumers 
C) decomposers 
D) all of these choices 
A) producers 
B) consumers 
C) decomposers 
D) all of these choices

Question 9

Nitrogen-fixing bacteria include:

Accepted Answer

A) Cyanobacteria 
B) Clostridium 
C) Klebsiella 
D) all of these choices 
A) Cyanobacteria 
B) Clostridium 
C) Klebsiella 
D) all of these choices

Question 10

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 11

Which of the following statements about ecology is incorrect

Accepted Answer

A) The 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) The 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 12

Phytoplankton include:

Accepted Answer

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

Question 13

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 14

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 15

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 16

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 17

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 18

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 19

Some microbes can survive drought by forming _____.

Accepted Answer

A) fimbriae 
B) spores 
C) cysts 
D) two of these choices 
A) fimbriae 
B) spores 
C) cysts 
D) two of these choices

Question 20

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

Exam 26: Environmental Microbiology

What are the consequences of heat acting as a water pollutant

What results from the biological oxygen demand (BOD)being high and the water becoming anaerobic

Tertiary treatment of sewage could include:

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

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

The loss of water from pores of plant leaves is called:

Which of the following statements about soil is false

Microbes in the environment can be _____.

Nitrogen-fixing bacteria include:

How do the ONPG and MUG test detect microorganisms in water

Which of the following statements about ecology is incorrect

Phytoplankton include:

Cytophaga,found in soil,is characterized by _____.

Nitrification is characterized by all of the following EXCEPT:

What role do microbes play in degradation of plastics

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

Denitrification is:

Which term has been INCORRECTLY matched

Some microbes can survive drought by forming _____.

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

Scope and History of Microbiology

The Microbiome

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

Basic Principles of Adaptive Immunity and Immunization

Immune Disorders

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 Diseases

Diseases of the Nervous System

Applied Microbiology

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