Question 1

Rhizobium and Bradyrhizobium are mixed with peat moss to increase nitrogen fixation.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following microbes produces a natural biopesticide?

Accepted Answer

A)  Saccharomyces cerevisiae 
B)  Thiobacillus ferroxidans 
C)  Lactobacillus buggaricus 
D)  Bacillus thuringiensis 
E)  Penicillium chryssogenum 
A)  Saccharomyces cerevisiae 
B)  Thiobacillus ferroxidans 
C)  Lactobacillus buggaricus 
D)  Bacillus thuringiensis 
E)  Penicillium chryssogenum

Question 3

High- pressure processing of foods such as deli meats and precooked chicken strips targets pathogens such as C. botulinum.

Accepted Answer

A) True 
 B)False

Question 4

If an industrial microbiologist works with Thiobacillus ferrooxidans, he is likely to be involved in copper mining.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following reactions makes wine less acidic?

Accepted Answer

A)  ethanol -acetic acid 
B)  sugar -CO2 + H2O 
C)  carbon dioxide -sucrose 
D)  sugar -ethanol 
E)  malic acid -lactic acid 
A)  ethanol -acetic acid 
B)  sugar -CO2 + H2O 
C)  carbon dioxide -sucrose 
D)  sugar -ethanol 
E)  malic acid -lactic acid

Question 6

Aseptic packaging utilizes which of the following to sterilize laminated paper or plastic prior to filling with food?

Accepted Answer

A)  X rays 
B)  hot hydrogen peroxide solution 
C)  autoclave 
D)  gamma radiation 
E)  hot HCl solution 
A)  X rays 
B)  hot hydrogen peroxide solution 
C)  autoclave 
D)  gamma radiation 
E)  hot HCl solution

Question 7

All of the following are reasons for utilizing algae for biofuel production EXCEPT

Accepted Answer

A)  they can utilize agriculturally poor land. 
B)  they do not take up land needed for food production. 
C)  they produce a nondegradable waste product. 
D)  they produce more energy per acre than corn. 
E)  their main requirement is abundant light. 
A)  they can utilize agriculturally poor land. 
B)  they do not take up land needed for food production. 
C)  they produce a nondegradable waste product. 
D)  they produce more energy per acre than corn. 
E)  their main requirement is abundant light.

Question 8

Industrial canning is achieved using a pressure cooker which operates in a manner similar to an autoclave.

Accepted Answer

A) True 
 B)False

Question 9

Vitamins A, B12, and E are commonly produced by microorganisms.

Accepted Answer

A) True 
 B)False

Question 10

You are growing Bacillus subtilis in a bioreactor and notice that the growth rate has slowed and the pH has decreased. You suspect the bacteria are

Accepted Answer

A)  photosynthesizing. 
B)  using proteins. 
C)  fermenting. 
D)  using the Krebs cycle. 
E)  dead. 
A)  photosynthesizing. 
B)  using proteins. 
C)  fermenting. 
D)  using the Krebs cycle. 
E)  dead.

Question 11

A baker forgets to put yeast in his bread dough. Which of the following do you expect to happen to the bread as a result?

Accepted Answer

A)  The bread will not rise. 
B)  The bread will look normal but will be tough. 
C)  It will take longer to bake. 
D)  Bacterial contaminants will now be able to grow. 
E)  The bread will have a sour taste. 
A)  The bread will not rise. 
B)  The bread will look normal but will be tough. 
C)  It will take longer to bake. 
D)  Bacterial contaminants will now be able to grow. 
E)  The bread will have a sour taste.

Question 12

Microorganisms play an active role in the formation of industrial products. Which of the following is mismatched?

Accepted Answer

A)  Bacillus thuringiensis - insecticide 
B)  algae - citric acid 
C)  Saccharomyces cerevisiae - for fermentation 
D)  Rhizobium - increases nitrogen in the soil 
E)  Penicillium - treatment of disease 
A)  Bacillus thuringiensis - insecticide 
B)  algae - citric acid 
C)  Saccharomyces cerevisiae - for fermentation 
D)  Rhizobium - increases nitrogen in the soil 
E)  Penicillium - treatment of disease

Question 13

All of the following foods are produced using microbial fermentations EXCEPT

Accepted Answer

A)  yogurt. 
B)  ketchup. 
C)  coffee. 
D)  sauerkraut. 
E)  sour cream. 
A)  yogurt. 
B)  ketchup. 
C)  coffee. 
D)  sauerkraut. 
E)  sour cream.

Question 14

What process does yeast use to produce ethanol for automobile fuel from corn?

Accepted Answer

A)  oxidation 
B)  fermentation 
C)  photosynthesis 
D)  anaerobic respiration 
E)  the Krebs cycle 
A)  oxidation 
B)  fermentation 
C)  photosynthesis 
D)  anaerobic respiration 
E)  the Krebs cycle

Question 15

The production of vinegar relies on the microbial oxidation of ethanol to acetic acid.

Accepted Answer

A) True 
 B)False

Question 16

Figure 28.1
  
-In Figure 28.1, assume the cells are your desired product and you want to maintain a continuous culture. When would you harvest cells to maximize your yield?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
A)  a 
B)  b 
C)  c 
D)  d

Question 17

Figure 28.1
  
-In Figure 28.1, assume the cells are producing penicillin which is collected during the idiophase. When would you be able to collect the penicillin?

Accepted Answer

A)  a 
B)  b 
C)  c 
D)  d 
A)  a 
B)  b 
C)  c 
D)  d

Question 18

All of the following are uses for radiation EXCEPT

Accepted Answer

A)  sterilizing spices. 
B)  inactivation of Trichinella larvae. 
C)  heating cold food. 
D)  prevention of sprouting. 
E)  killing of insect eggs and larva. 
A)  sterilizing spices. 
B)  inactivation of Trichinella larvae. 
C)  heating cold food. 
D)  prevention of sprouting. 
E)  killing of insect eggs and larva.

Question 19

Which of the following microorganisms is usually used in the fermentation of alcoholic beverages?

Accepted Answer

A)  Rhizopus 
B)  Penicillium 
C)  Propionobacterium 
D)  Lactobacillus 
E)  Saccharomyces 
A)  Rhizopus 
B)  Penicillium 
C)  Propionobacterium 
D)  Lactobacillus 
E)  Saccharomyces

Question 20

Commercial sterilization differs from complete sterilization in that commercial sterilization

Accepted Answer

A)  employs a higher temperature. 
B)  kills only bacteria. 
C)  may result in the survival of thermophiles. 
D)  may result in the survival of fungal spores. 
E)  kills all microorganisms. 
A)  employs a higher temperature. 
B)  kills only bacteria. 
C)  may result in the survival of thermophiles. 
D)  may result in the survival of fungal spores. 
E)  kills all microorganisms.

Exam 28: Applied and Industrial Microbiology

Rhizobium and Bradyrhizobium are mixed with peat moss to increase nitrogen fixation.

Which of the following microbes produces a natural biopesticide?

High- pressure processing of foods such as deli meats and precooked chicken strips targets pathogens such as C. botulinum.

If an industrial microbiologist works with Thiobacillus ferrooxidans, he is likely to be involved in copper mining.

Which of the following reactions makes wine less acidic?

Aseptic packaging utilizes which of the following to sterilize laminated paper or plastic prior to filling with food?

All of the following are reasons for utilizing algae for biofuel production EXCEPT

Industrial canning is achieved using a pressure cooker which operates in a manner similar to an autoclave.

Vitamins A, B12, and E are commonly produced by microorganisms.

You are growing Bacillus subtilis in a bioreactor and notice that the growth rate has slowed and the pH has decreased. You suspect the bacteria are

A baker forgets to put yeast in his bread dough. Which of the following do you expect to happen to the bread as a result?

Microorganisms play an active role in the formation of industrial products. Which of the following is mismatched?

All of the following foods are produced using microbial fermentations EXCEPT

What process does yeast use to produce ethanol for automobile fuel from corn?

The production of vinegar relies on the microbial oxidation of ethanol to acetic acid.

Figure 28.1 -In Figure 28.1, assume the cells are your desired product and you want to maintain a continuous culture. When would you harvest cells to maximize your yield?

Figure 28.1 -In Figure 28.1, assume the cells are producing penicillin which is collected during the idiophase. When would you be able to collect the penicillin?

All of the following are uses for radiation EXCEPT

Which of the following microorganisms is usually used in the fermentation of alcoholic beverages?

Commercial sterilization differs from complete sterilization in that commercial sterilization

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Recombinant Dna

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

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Vitamins A, B₁₂, and E are commonly produced by microorganisms.