Question 1

Which of the following statements about primary and secondary metabolites is true?

Accepted Answer

A)  Primary metabolites are produced maximally during the lag phase of growth. 
B)  Secondary metabolites are produced maximally during the lag phase of growth. 
C)  Primary metabolites are produced maximally during the log phase of growth. 
D)  Secondary metabolites are produced maximally during the log phase of growth. 
E)  Primary metabolites are produced maximally during the stationary phase of growth. 
A)  Primary metabolites are produced maximally during the lag phase of growth. 
B)  Secondary metabolites are produced maximally during the lag phase of growth. 
C)  Primary metabolites are produced maximally during the log phase of growth. 
D)  Secondary metabolites are produced maximally during the log phase of growth. 
E)  Primary metabolites are produced maximally during the stationary phase of growth. C

Question 2

If bacteria that have undergone strain improvement are introduced into a natural environment:

Accepted Answer

A)  they will usually outcompete and replace naturally occurring, wild-type strains. 
B)  they will usually be outcompeted by naturally occurring wild-type strains. 
C)  they will usually act as predators on naturally occurring wild-type strains. 
D)  they will usually serve as prey for naturally occurring wild-type strains. 
E)  they will usually act as commensals with naturally occurring, wild-type strains. 
A)  they will usually outcompete and replace naturally occurring, wild-type strains. 
B)  they will usually be outcompeted by naturally occurring wild-type strains. 
C)  they will usually act as predators on naturally occurring wild-type strains. 
D)  they will usually serve as prey for naturally occurring wild-type strains. 
E)  they will usually act as commensals with naturally occurring, wild-type strains. B

Question 3

Metabolites are:

Accepted Answer

A)  the substrate that is converted into a useful product by microorganisms. 
B)  an intermediate compound in a biochemical pathway, the final product of which is a useful product. 
C)  the final product in a biochemical pathway. 
D)  either "a" or "c" above 
E)  either "b" or "c" above 
A)  the substrate that is converted into a useful product by microorganisms. 
B)  an intermediate compound in a biochemical pathway, the final product of which is a useful product. 
C)  the final product in a biochemical pathway. 
D)  either "a" or "c" above 
E)  either "b" or "c" above E

Question 4

Microorganisms to be used commercially usually are developed in a series of defined steps. Which of the following has those steps in the correct order?

Accepted Answer

A)  laboratory flask » pilot plant fermentor » laboratory fermentor » industrial fermentor 
B)  laboratory fermentor » laboratory flask » pilot plant fermentor » industrial fermentor 
C)  industrial fermentor » pilot plant fermentor » laboratory fermentor » labortory flask 
D)  laboratory flask » laboratory fermentor » pilot plant fermentor » industrial fermentor 
E)  pilot plant fermentor » labortory flask » industrial fermentor » laboratory fermentor 
A)  laboratory flask » pilot plant fermentor » laboratory fermentor » industrial fermentor 
B)  laboratory fermentor » laboratory flask » pilot plant fermentor » industrial fermentor 
C)  industrial fermentor » pilot plant fermentor » laboratory fermentor » labortory flask 
D)  laboratory flask » laboratory fermentor » pilot plant fermentor » industrial fermentor 
E)  pilot plant fermentor » labortory flask » industrial fermentor » laboratory fermentor

Question 5

Which of the following statements about landfills is true?

Accepted Answer

A)  Decomposition of garbage is slowed by anaerobic conditions. 
B)  Decomposition of garbage is slowed by aerobic conditions. 
C)  Decomposition of garbage is slowed by toxic chemicals, which kill microorganisms. 
D)  Decompostion of garbage is slowed by the release of methane. 
A)  Decomposition of garbage is slowed by anaerobic conditions. 
B)  Decomposition of garbage is slowed by aerobic conditions. 
C)  Decomposition of garbage is slowed by toxic chemicals, which kill microorganisms. 
D)  Decompostion of garbage is slowed by the release of methane.

Question 6

When bacteria are used in wastewater treatment plants to convert hydrogen sulfide into hydrogen sulfate, why are the bacteria grown on biofilms?

Accepted Answer

A)  To protect them from damage to their cell walls caused by the waste water. 
B)  The bacteria that make this conversion can only grow in biofilms. 
C)  The biofilms increase the time during which the bacteria can metabolize the hydrogen sulfide. 
D)  The hydrogen sulfate adheres to the biofilm, reducing the amount of this chemical released in treated water. 
E)  Only bacteria growing in biofilms produce the enzyme necessary to make this conversion. 
A)  To protect them from damage to their cell walls caused by the waste water. 
B)  The bacteria that make this conversion can only grow in biofilms. 
C)  The biofilms increase the time during which the bacteria can metabolize the hydrogen sulfide. 
D)  The hydrogen sulfate adheres to the biofilm, reducing the amount of this chemical released in treated water. 
E)  Only bacteria growing in biofilms produce the enzyme necessary to make this conversion.

Question 7

What exactly is the biopesticide Bt? Why is this product, which kills garden pests, not a danger to humans, pets, or other animals?

Accepted Answer

The biopesticide Bt consist of the endos

Question 8

Which type of organism would be most promising if you were seeking an organism that can digest hydrocarbons, to help clean up oil spills?

Accepted Answer

A)  a nonfastidious organism 
B)  a fastidious organism 
C)  an obligate anaerobe 
D)  an extreme thermophile 
E)  an acidophile 
A)  a nonfastidious organism 
B)  a fastidious organism 
C)  an obligate anaerobe 
D)  an extreme thermophile 
E)  an acidophile

Question 9

Some bacteria release electrons, which can then be bound to an electrode, generating electricity. This process may be used:

Accepted Answer

A)  to produce cellulosic ethanol. 
B)  to produce biodegradable plastics. 
C)  to create microbial fuel cells. 
D)  to separate valuable minerals from rock deposits. 
E)  as a biologically produced hydrocarbon. 
A)  to produce cellulosic ethanol. 
B)  to produce biodegradable plastics. 
C)  to create microbial fuel cells. 
D)  to separate valuable minerals from rock deposits. 
E)  as a biologically produced hydrocarbon.

Question 10

The easiest step when it comes to developing a new antibiotic is:

Accepted Answer

A)  finding a microorganism that produces an antibiotic. 
B)  determining the optimum growth conditions for the microorganism in question. 
C)  the scale-up process. 
D)  improving the bacterial strain so that commercially valuable quantities of the antibiotic are produced. 
A)  finding a microorganism that produces an antibiotic. 
B)  determining the optimum growth conditions for the microorganism in question. 
C)  the scale-up process. 
D)  improving the bacterial strain so that commercially valuable quantities of the antibiotic are produced.

Question 11

Which of the following is an example of an extremozyme?

Accepted Answer

A)  a microorganism that is isolated from a very hot, thermal pool of water 
B)  the Taq polymerase, isolated from Thermus aquaticus, which is used in PCR 
C)  a cellulase enzyme, which can digest cellulose, used in a stain remover 
D)  a biopesticide used to control insect pests in the garden 
E)  a microorganism used in nanotechnology 
A)  a microorganism that is isolated from a very hot, thermal pool of water 
B)  the Taq polymerase, isolated from Thermus aquaticus, which is used in PCR 
C)  a cellulase enzyme, which can digest cellulose, used in a stain remover 
D)  a biopesticide used to control insect pests in the garden 
E)  a microorganism used in nanotechnology

Question 12

In what way does metabolite production by a microorganism often depend on other microorganisms that may be found in the same environment?

Accepted Answer

Microorganisms in the environment often

Question 13

Why does compost tend to heat up over time? Why is it beneficial to periodically turn the compost?

Accepted Answer

Aerobes, because of their more efficient

Which of the following statements about primary and secondary metabolites is true?

If bacteria that have undergone strain improvement are introduced into a natural environment:

Metabolites are:

Microorganisms to be used commercially usually are developed in a series of defined steps. Which of the following has those steps in the correct order?

Which of the following statements about landfills is true?

When bacteria are used in wastewater treatment plants to convert hydrogen sulfide into hydrogen sulfate, why are the bacteria grown on biofilms?

What exactly is the biopesticide Bt? Why is this product, which kills garden pests, not a danger to humans, pets, or other animals?

Which type of organism would be most promising if you were seeking an organism that can digest hydrocarbons, to help clean up oil spills?

Some bacteria release electrons, which can then be bound to an electrode, generating electricity. This process may be used:

The easiest step when it comes to developing a new antibiotic is:

Which of the following is an example of an extremozyme?

In what way does metabolite production by a microorganism often depend on other microorganisms that may be found in the same environment?

Why does compost tend to heat up over time? Why is it beneficial to periodically turn the compost?

Living in a Microbial World

The Chemistry of Life

The Cell: Where Life Begins

A Field Guide to the Microorganisms

The Microbiology of History and the History of Microbiology

Microbial Genetics

Metabolism and Growth

Microbial Evolution: the Origin and Diversity of Life

An Ecologists Guide to Microbiology

The Nature of Disease: a Pathogens Perspective

Host Defense

Control of Microbial Growth

Epidemiology: Who, What, When, Where, and Why

The Future Is Here: Microorganisms and Biotechnology

Guess Whos Coming to Dinner: Microorganisms and Food

Filters

Exam 16: Better Living With Microorganisms: Industrial and Applied Microbiology

Which of the following statements about primary and secondary metabolites is true?

If bacteria that have undergone strain improvement are introduced into a natural environment:

Metabolites are:

Microorganisms to be used commercially usually are developed in a series of defined steps. Which of the following has those steps in the correct order?

Which of the following statements about landfills is true?

When bacteria are used in wastewater treatment plants to convert hydrogen sulfide into hydrogen sulfate, why are the bacteria grown on biofilms?

What exactly is the biopesticide Bt? Why is this product, which kills garden pests, not a danger to humans, pets, or other animals?

Which type of organism would be most promising if you were seeking an organism that can digest hydrocarbons, to help clean up oil spills?

Some bacteria release electrons, which can then be bound to an electrode, generating electricity. This process may be used:

The easiest step when it comes to developing a new antibiotic is:

Which of the following is an example of an extremozyme?

In what way does metabolite production by a microorganism often depend on other microorganisms that may be found in the same environment?

Why does compost tend to heat up over time? Why is it beneficial to periodically turn the compost?

Living in a Microbial World

The Chemistry of Life

The Cell: Where Life Begins

A Field Guide to the Microorganisms

The Microbiology of History and the History of Microbiology

Microbial Genetics

Metabolism and Growth

Microbial Evolution: the Origin and Diversity of Life

An Ecologists Guide to Microbiology

The Nature of Disease: a Pathogens Perspective

Host Defense

Control of Microbial Growth

Epidemiology: Who, What, When, Where, and Why

The Future Is Here: Microorganisms and Biotechnology

Guess Whos Coming to Dinner: Microorganisms and Food

Filters