Question 1

Can you determine both MIC and MBC from an E-test? Explain.

Accepted Answer

No, the E-test is primarily used to dete

Question 2

A drug that inhibits mitosis,such as griseofulvin,would be more effective against

Accepted Answer

A) gram-positive bacteria. 
B) gram-negative bacteria. 
C) fungi. 
D) wall-less bacteria. 
E) mycobacteria. 
A) gram-positive bacteria. 
B) gram-negative bacteria. 
C) fungi. 
D) wall-less bacteria. 
E) mycobacteria.

Question 3

Use of antibiotics in animal feed leads to antibiotic-resistant bacteria because

Accepted Answer

A) bacteria from other animals replace those killed by the antibiotics. 
B) the few surviving bacteria that are affected by the antibiotics develop immunity to the antibiotics,which they pass on to their progeny. 
C) the antibiotics cause new mutations to occur in the surviving bacteria,which results in resistance to antibiotics. 
D) the antibiotics kill susceptible bacteria,but the few that are naturally resistant live and reproduce,and their progeny repopulate the host animal. 
E) the antibiotics persist in soil and water. 
A) bacteria from other animals replace those killed by the antibiotics. 
B) the few surviving bacteria that are affected by the antibiotics develop immunity to the antibiotics,which they pass on to their progeny. 
C) the antibiotics cause new mutations to occur in the surviving bacteria,which results in resistance to antibiotics. 
D) the antibiotics kill susceptible bacteria,but the few that are naturally resistant live and reproduce,and their progeny repopulate the host animal. 
E) the antibiotics persist in soil and water.

Question 4

To date,most of our natural antibiotics have been found to be produced by members of what genus?

Accepted Answer

A) Streptomyces 
B) Bacillus 
C) Penicillium 
D) Paenibacillus 
E) Cephalosporium 
A) Streptomyces 
B) Bacillus 
C) Penicillium 
D) Paenibacillus 
E) Cephalosporium

Question 5

Table 20.2
The following results were obtained from a disk-diffusion test for microbial susceptibility to antibiotics.Staphylococcus aureus was the test organism.
 $$\begin{array} { | c | c | } 
\hline \text { Antibiotic } & \text { Zone of Inhibition } \
\hline \text { A } & 3 \mathrm {~mm} \
\hline \text { B } & 7 \mathrm {~mm} \
\hline \text { C } & 0 \mathrm {~mm} \
\hline \text { D } & 10 \mathrm {~mm} \
\hline
\end{array}$$
-In Table 20.2,the antibiotic that exhibited bactericidal action was

Accepted Answer

A) A. 
B) B. 
C) C. 
D) D. 
E) The answer cannot be determined based on the information provided. 
A) A. 
B) B. 
C) C. 
D) D. 
E) The answer cannot be determined based on the information provided.

Can you determine both MIC and MBC from an E-test? Explain.

A drug that inhibits mitosis,such as griseofulvin,would be more effective against

Use of antibiotics in animal feed leads to antibiotic-resistant bacteria because

To date,most of our natural antibiotics have been found to be produced by members of what genus?

Table 20.2 The following results were obtained from a disk-diffusion test for microbial susceptibility to antibiotics.Staphylococcus aureus was the test organism. Antibiotic Zone of Inhibition A 3 B 7 C 0 D 10 -In Table 20.2,the antibiotic that exhibited bactericidal action was

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

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

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

Applied and Industrial Microbiology

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Exam 20: Antimicrobial Drugs

Can you determine both MIC and MBC from an E-test? Explain.

A drug that inhibits mitosis,such as griseofulvin,would be more effective against

Use of antibiotics in animal feed leads to antibiotic-resistant bacteria because

To date,most of our natural antibiotics have been found to be produced by members of what genus?

Table 20.2 The following results were obtained from a disk-diffusion test for microbial susceptibility to antibiotics.Staphylococcus aureus was the test organism. Antibiotic Zone of Inhibition A 3 B 7 C 0 D 10 -In Table 20.2,the antibiotic that exhibited bactericidal action was

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

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

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

Applied and Industrial Microbiology

Filters