Question 1

Describe an application of antibiotics other than their usage in clinical or veterinary medicine.

Accepted Answer

The answer of Describe an application of antibiotics other than...

Question 2

Important targets of antibiotics in Bacteria are

Accepted Answer

A)  the cytoplasmic membrane. 
B)  the cell wall. 
C)  DNA replication and transcription elements. 
D)  all of the above. 
A)  the cytoplasmic membrane. 
B)  the cell wall. 
C)  DNA replication and transcription elements. 
D)  all of the above.

Question 3

What are the pros and cons of flash pasteurization compared to bulk pasteurization?

Accepted Answer

Flash pasteurization uses a higher tempe

Question 4

Which of the following antimicrobial treatments is affective only on exposed surfaces?

Accepted Answer

A)  ultraviolet rays 
B)  microwaves 
C)  X- rays and gamma rays 
D)  electrons 
A)  ultraviolet rays 
B)  microwaves 
C)  X- rays and gamma rays 
D)  electrons

Question 5

Which statement is TRUE about heat sterilization?

Accepted Answer

A)  Microbial death is more rapid at an acidic pH. 
B)  The amount of water in a substance is a major factor in heat resistance. 
C)  High concentrations of sugars and salts influence sterilization time. 
D)  All of the above are true. 
A)  Microbial death is more rapid at an acidic pH. 
B)  The amount of water in a substance is a major factor in heat resistance. 
C)  High concentrations of sugars and salts influence sterilization time. 
D)  All of the above are true.

Question 6

Antimicrobial drugs are often grouped according to

Accepted Answer

A)  mechanism of action. 
B)  molecular structure. 
C)  spectrum of antimicrobial activity. 
D)  all of the above. 
A)  mechanism of action. 
B)  molecular structure. 
C)  spectrum of antimicrobial activity. 
D)  all of the above.

Question 7

Antimicrobial activity is measured by determining the smallest amount of agent needed to inhibit the growth of a test organism, a value called the__________ .

Accepted Answer

minimum in

Question 8

Because of their particulate nature, electrons are not considered a form of electromagnetic radiation.

Accepted Answer

A) True 
 B)False

Question 9

The CDC has developed a 12- step prevention program for the prevention of resistance to antimicrobial agents aimed primarily for hospitalized individuals.

Accepted Answer

A) True 
 B)False

Question 10

Endospore heat resistance is determined by the concentration of small acid- soluble proteins (SASPs) and water content of the endospore.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following are classified as electromagnetic radiation?

Accepted Answer

A)  microwaves 
B)  X- rays and gamma rays 
C)  ultraviolet rays 
D)  all of the above 
A)  microwaves 
B)  X- rays and gamma rays 
C)  ultraviolet rays 
D)  all of the above

Question 12

Of all the known antibiotics that have been identified in nature,___________ are clinically useful.

Accepted Answer

A)  18- 20% 
B)  <1% 
C)  8- 10% 
D)  25- 30% 
A)  18- 20% 
B)  <1% 
C)  8- 10% 
D)  25- 30%

Question 13

Describe the autoclave, and explain the roles of time, temperature, and pressure in the functioning of the autoclave.

Accepted Answer

High pressure is used in an autoclave so

Question 14

__________are applied to living tissues;__________ are used on inanimate objects.

Accepted Answer

Antiseptic

Question 15

In practice, sterility is difficult to achieve.

Accepted Answer

A) True 
 B)False

Question 16

The thermal death time is the

Accepted Answer

A)  time required for a tenfold reduction in the population density at a given temperature. 
B)  time it takes to kill all cells at a given temperature. 
C)  measure of the radiation energy output from a source. 
D)  dose of radiation necessary for a tenfold reduction in the numbers of selected microorganisms or biological functions. 
A)  time required for a tenfold reduction in the population density at a given temperature. 
B)  time it takes to kill all cells at a given temperature. 
C)  measure of the radiation energy output from a source. 
D)  dose of radiation necessary for a tenfold reduction in the numbers of selected microorganisms or biological functions.

Question 17

What process must a new drug undergo before it is accepted for the commercial market?

Accepted Answer

A new drug takes 10 to 25 years before i

Question 18

In general, vegetative cells are more heat resistant than bacterial endospores.

Accepted Answer

A) True 
 B)False

Question 19

HEPA filters are an example of__________ filters, which in the home are used to trap allergens, dust, and spores with a filter constructed from a random array of .

Accepted Answer

depth / gl

Question 20

The purpose of decontamination methods is to eliminate microbial growth.

Accepted Answer

A) True 
 B)False

Exam 26: Microbial Growth Control

Describe an application of antibiotics other than their usage in clinical or veterinary medicine.

Important targets of antibiotics in Bacteria are

What are the pros and cons of flash pasteurization compared to bulk pasteurization?

Which of the following antimicrobial treatments is affective only on exposed surfaces?

Which statement is TRUE about heat sterilization?

Antimicrobial drugs are often grouped according to

Antimicrobial activity is measured by determining the smallest amount of agent needed to inhibit the growth of a test organism, a value called the__________ .

Because of their particulate nature, electrons are not considered a form of electromagnetic radiation.

The CDC has developed a 12- step prevention program for the prevention of resistance to antimicrobial agents aimed primarily for hospitalized individuals.

Endospore heat resistance is determined by the concentration of small acid- soluble proteins (SASPs) and water content of the endospore.

Which of the following are classified as electromagnetic radiation?

Of all the known antibiotics that have been identified in nature,___________ are clinically useful.

Describe the autoclave, and explain the roles of time, temperature, and pressure in the functioning of the autoclave.

__________are applied to living tissues;__________ are used on inanimate objects.

In practice, sterility is difficult to achieve.

The thermal death time is the

What process must a new drug undergo before it is accepted for the commercial market?

In general, vegetative cells are more heat resistant than bacterial endospores.

HEPA filters are an example of__________ filters, which in the home are used to trap allergens, dust, and spores with a filter constructed from a random array of .

The purpose of decontamination methods is to eliminate microbial growth.

Microorganisms and Microbiology

A Brief Journey to the Microbial World

Cell Structure and Function in Bacteria and Archaea

Nutrition, Culture, and Metabolism of Microorganisms

Microbial Growth

Molecular Biology of Bacteria

Archael and Eukaryotic Molecular Biology

Regulation of Gene Expression

Viruses and Virology

Genetics of Bacteria and Arachaea

Genetic Engineering

Microbial Genomics

Phototrophy, Chemolithotrophy, and Major Biosyntheses

Catabolism of Organic Compounds

Commercial Products and Biotechnology

Microbial Evolution and Systematics

Bacteria: the Proteobacteria

Other Bacteria

Archaea

Eukaryotic Cell Biology and Eukaryotic Microorganisms

Viral Diversity

Methods in Microbial Ecology

Major Microbial Habitats and Diversity

Nutrient Cycles, Biodegradation, and Bioremediation

Microbial Symbioses

Microbial Interactions With Humans

Immunity and Host Defense

Immune Mechanisms

Molecular Immunology

Diagnostic Microbiology and Immunology

Epidemiology

Person-To-Person Microbial Diseases

Vectorborne and Soilborne Microbial Pathogens

Wastewater Treatment, Water Purification, and Waterborne Microbial Diseases

Food Preservation and Foodborne Microbial Diseases

Filters

are applied to living tissues; are used on inanimate objects.