Question 1

Why are antibiotics often added to animal feed?

Accepted Answer

A)  to reduce disease transmission among domestic animals 
B)  to increase the growth rate of domestic animals 
C)  to reduce the likelihood of drug resistance 
D)  All of the above are correct. 
E)  Both "a" and "b" are correct. 
A)  to reduce disease transmission among domestic animals 
B)  to increase the growth rate of domestic animals 
C)  to reduce the likelihood of drug resistance 
D)  All of the above are correct. 
E)  Both "a" and "b" are correct. E

Question 2

What are some of the problems associated with the development of antiviral drugs?

Accepted Answer

A problem in the development of antiviral drugs is that viral replication is tied so intimately to the host. Because they use the host's replicative machinery to replicate, viruses offer fewer unique targets for antiviral drugs than other microorganisms do. Additionally, when viruses are outside the host cell, they are metabolically inactive, meaning there are few if any viral processes to attack with drugs. As a further complication, since viruses only replicate inside host cells, any effective antiviral drug must be able to penetrate host cells without harming them.

Question 3

Which of the following would be most appropriate to reduce microorganisms in a wound?

Accepted Answer

A)  an antiseptic 
B)  a disinfectant 
C)  UV Radiation 
D)  alcohol 
E)  any sterilization technique 
A)  an antiseptic 
B)  a disinfectant 
C)  UV Radiation 
D)  alcohol 
E)  any sterilization technique A

Question 4

If the number of microorganisms must be reduced in a beverage that cannot be subjected to high temperatures, ________ would be an effective control method.

Accepted Answer

A)  pasteurization 
B)  autoclaving 
C)  filtration 
D)  the addition of heavy metals 
A)  pasteurization 
B)  autoclaving 
C)  filtration 
D)  the addition of heavy metals

Question 5

Which of the following statements is true?

Accepted Answer

A)  Selective toxicity is harder to achieve when developing drugs against eukaryotic pathogens than it is against bacteria. 
B)  Compared to antibiotics, antifungal drugs usually have limited side effects. 
C)  To date, drug resistance has not been a problem with antimalarial drugs. 
D)  Drugs against eukaryotic pathogens generally act by interfering with ribosomes. 
E)  An advantage of most drugs against eukaryotic pathogens is that they tend to be extremely narrow spectrum. 
A)  Selective toxicity is harder to achieve when developing drugs against eukaryotic pathogens than it is against bacteria. 
B)  Compared to antibiotics, antifungal drugs usually have limited side effects. 
C)  To date, drug resistance has not been a problem with antimalarial drugs. 
D)  Drugs against eukaryotic pathogens generally act by interfering with ribosomes. 
E)  An advantage of most drugs against eukaryotic pathogens is that they tend to be extremely narrow spectrum.

Question 6

In which of the following situations might a bacteriostatic drug be preferable to a bactericidal drug?

Accepted Answer

A)  when a patient is infected with an unknown pathogen 
B)  when the patient is immunocompromised 
C)  when antibiotics are being used prophylactically 
D)  when an infection is in a well-oxygenated region of the body 
E)  when Gram-negative bacteria have infected an ordinarily sterile region of the body 
A)  when a patient is infected with an unknown pathogen 
B)  when the patient is immunocompromised 
C)  when antibiotics are being used prophylactically 
D)  when an infection is in a well-oxygenated region of the body 
E)  when Gram-negative bacteria have infected an ordinarily sterile region of the body

Question 7

In which of the following situations might a broad spectrum drug be preferable to a narrow spectrum drug?

Accepted Answer

A)  when the patient is infected with an unknown pathogen 
B)  when the patient is immunocompromised 
C)  when Gram-negative bacteria have infected an ordinarily sterile region of the body 
D)  in a well-oxygenated region of the body 
E)  when the patient is in danger of going into shock from endotoxin poisoning 
A)  when the patient is infected with an unknown pathogen 
B)  when the patient is immunocompromised 
C)  when Gram-negative bacteria have infected an ordinarily sterile region of the body 
D)  in a well-oxygenated region of the body 
E)  when the patient is in danger of going into shock from endotoxin poisoning

Question 8

Sulfa drugs:

Accepted Answer

A)  act by interfering with cell wall synthesis. 
B)  bind to and interfere with bacterial ribosomes. 
C)  interfere with bacterial DNA replicaton. 
D)  interfere with the activity of a bacterial enzyme. 
E)  disrupt the production of mycolic acids by acid-fast bacteria. 
A)  act by interfering with cell wall synthesis. 
B)  bind to and interfere with bacterial ribosomes. 
C)  interfere with bacterial DNA replicaton. 
D)  interfere with the activity of a bacterial enzyme. 
E)  disrupt the production of mycolic acids by acid-fast bacteria.

Question 9

What is a nosocomial infection?

Accepted Answer

A)  an infection contracted at one's place of work, or at school 
B)  an infection contracted from an animal 
C)  an infection contracted from improperly prepared food 
D)  an infection contracted during a stay in the hospital 
E)  an infection that a health care worker contracts from a patient 
A)  an infection contracted at one's place of work, or at school 
B)  an infection contracted from an animal 
C)  an infection contracted from improperly prepared food 
D)  an infection contracted during a stay in the hospital 
E)  an infection that a health care worker contracts from a patient

Question 10

Pasteurization:

Accepted Answer

A)  is a technique used to sterilize liquids. 
B)  relies on high temperature and high pressure to kill microorganisms. 
C)  can be considered to be a bacteriotatic control measure. 
D)  selectively kills thermophiles in liquids. 
E)  selectively kills mesophiles in liquids. 
A)  is a technique used to sterilize liquids. 
B)  relies on high temperature and high pressure to kill microorganisms. 
C)  can be considered to be a bacteriotatic control measure. 
D)  selectively kills thermophiles in liquids. 
E)  selectively kills mesophiles in liquids.

Question 11

In what situations would UV radiation be an appropriate method for microbial control?

Accepted Answer

UV radiation is used most frequently to

Question 12

Which of the following most accurately describes the activity of acyclovir?

Accepted Answer

A)  It prevents uncoating by viral particles. 
B)  It is phosphorylated by a viral enzyme, producing a false nucleotide, which is then incorporated into replicating viral DNA. 
C)  It prevents the release of newly replicated influenza viral particles from an infected cell. 
D)  It interferes with the activity of the viral enzyme reverse transcriptase. 
E)  It binds to and inhibits the viral protease enzyme, which cleaves large viral proteins into the smaller proteins needed for viral assembly. 
A)  It prevents uncoating by viral particles. 
B)  It is phosphorylated by a viral enzyme, producing a false nucleotide, which is then incorporated into replicating viral DNA. 
C)  It prevents the release of newly replicated influenza viral particles from an infected cell. 
D)  It interferes with the activity of the viral enzyme reverse transcriptase. 
E)  It binds to and inhibits the viral protease enzyme, which cleaves large viral proteins into the smaller proteins needed for viral assembly.

Question 13

How does stopping an antibiotic prescription prematurely contribute to the development of drug resistance?

Accepted Answer

When a prescription is completed, the en

Why are antibiotics often added to animal feed?

What are some of the problems associated with the development of antiviral drugs?

Which of the following would be most appropriate to reduce microorganisms in a wound?

If the number of microorganisms must be reduced in a beverage that cannot be subjected to high temperatures, ________ would be an effective control method.

Which of the following statements is true?

In which of the following situations might a bacteriostatic drug be preferable to a bactericidal drug?

In which of the following situations might a broad spectrum drug be preferable to a narrow spectrum drug?

Sulfa drugs:

What is a nosocomial infection?

Pasteurization:

In what situations would UV radiation be an appropriate method for microbial control?

Which of the following most accurately describes the activity of acyclovir?

How does stopping an antibiotic prescription prematurely contribute to the development of drug resistance?

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

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

The Future Is Here: Microorganisms and Biotechnology

Guess Whos Coming to Dinner: Microorganisms and Food

Better Living With Microorganisms: Industrial and Applied Microbiology

Filters

Exam 12: Control of Microbial Growth

Why are antibiotics often added to animal feed?

What are some of the problems associated with the development of antiviral drugs?

Which of the following would be most appropriate to reduce microorganisms in a wound?

If the number of microorganisms must be reduced in a beverage that cannot be subjected to high temperatures, ________ would be an effective control method.

Which of the following statements is true?

In which of the following situations might a bacteriostatic drug be preferable to a bactericidal drug?

In which of the following situations might a broad spectrum drug be preferable to a narrow spectrum drug?

Sulfa drugs:

What is a nosocomial infection?

Pasteurization:

In what situations would UV radiation be an appropriate method for microbial control?

Which of the following most accurately describes the activity of acyclovir?

How does stopping an antibiotic prescription prematurely contribute to the development of drug resistance?

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

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

The Future Is Here: Microorganisms and Biotechnology

Guess Whos Coming to Dinner: Microorganisms and Food

Better Living With Microorganisms: Industrial and Applied Microbiology

Filters