Question 1

Species of Bacillus produce bacitracin and the polymyxin drugs.

Accepted Answer

A) True 
 B)False  True

Question 2

The use of vaginal inserts of Lactobacillus to restore a healthy acidic environment is an example of

Accepted Answer

A) prebiotics. 
B) probiotics. 
C) lantibiotics. 
D) phytobiotics. 
E) riboswitches. 
A) prebiotics. 
B) probiotics. 
C) lantibiotics. 
D) phytobiotics. 
E) riboswitches. B

Question 3

Each of the following is a mechanism for drug resistance transfer between microorganisms except

Accepted Answer

A) transposons. 
B) R-plasmids. 
C) conjugation. 
D) mutation. 
A) transposons. 
B) R-plasmids. 
C) conjugation. 
D) mutation. D

Question 4

Penicillins and cephalosporins

Accepted Answer

A) interfere with elongation of peptidoglycan. 
B) are metabolic analogs of PABA and block folic acid synthesis. 
C) attach to the 30S ribosomal subunit and disrupt protein synthesis. 
D) damage cell membranes. 
E) block peptidases that cross-link glycan molecules. 
A) interfere with elongation of peptidoglycan. 
B) are metabolic analogs of PABA and block folic acid synthesis. 
C) attach to the 30S ribosomal subunit and disrupt protein synthesis. 
D) damage cell membranes. 
E) block peptidases that cross-link glycan molecules.

Question 5

Which of the following is not a drug group used to treat fungal infections?

Accepted Answer

A) quinolones 
B) macrolide polyene antibiotics 
C) griseofulvin 
D) synthetic azoles 
E) flucytosine 
A) quinolones 
B) macrolide polyene antibiotics 
C) griseofulvin 
D) synthetic azoles 
E) flucytosine

Question 6

You have given a dosage of an antibiotic to a patient for his infection,but the patient is not getting any better.The MIC tests shows that the drug that you prescribed,at the dosage that was given,should work against this particular strain of bacterium.What do you think might be the problem?

Accepted Answer

A) The drug might be broken down in the patient's body before it can have its full effect on the bacterium. 
B) The patient is resistant to the drug. 
C) The bacterium is immune to the chemical effects of the drug. 
D) The drug was improperly made at the pharmaceutical company,so is no longer effective. 
A) The drug might be broken down in the patient's body before it can have its full effect on the bacterium. 
B) The patient is resistant to the drug. 
C) The bacterium is immune to the chemical effects of the drug. 
D) The drug was improperly made at the pharmaceutical company,so is no longer effective.

Question 7

All of the following pertain to fluoroquinolones except

Accepted Answer

A) broad spectrum. 
B) include ciprofloxacin and levofloxacin. 
C) are nephrotoxic. 
D) used to treat respiratory,urinary,and sexually transmitted infections. 
E) readily absorbed from intestines. 
A) broad spectrum. 
B) include ciprofloxacin and levofloxacin. 
C) are nephrotoxic. 
D) used to treat respiratory,urinary,and sexually transmitted infections. 
E) readily absorbed from intestines.

Question 8

A chemical that inhibits beta-lactamase enzymes is

Accepted Answer

A) synercid. 
B) penicillinase. 
C) aztreonam. 
D) clavulanic acid. 
E) imipenem. 
A) synercid. 
B) penicillinase. 
C) aztreonam. 
D) clavulanic acid. 
E) imipenem.

Question 9

The use of antibiotics in cattle feed leads to the development of antibiotic-resistant bacteria.

Accepted Answer

A) True 
 B)False

Question 10

The MIC is the smallest concentration of an antimicrobial required to inhibit the growth of the microbe.

Accepted Answer

A) True 
 B)False

Question 11

Ampicillin,amoxicillin,mezlocillin,and penicillin G all have

Accepted Answer

A) a beta-lactam ring. 
B) resistance to the action of penicillinase. 
C) a semisynthetic nature. 
D) an expanded spectrum of activity. 
A) a beta-lactam ring. 
B) resistance to the action of penicillinase. 
C) a semisynthetic nature. 
D) an expanded spectrum of activity.

Question 12

Antiviral drugs that target reverse transcriptase would be used to treat infections caused by:

Accepted Answer

A) influenza A virus. 
B) HIV. 
C) herpes zoster virus. 
D) respiratory syncytial virus. 
E) hepatitis C virus. 
A) influenza A virus. 
B) HIV. 
C) herpes zoster virus. 
D) respiratory syncytial virus. 
E) hepatitis C virus.

Question 13

What antibiotic is mixed with neomycin and polymyxin to make an antibiotic ointment (Neosporin)for superficial skin infections?

Accepted Answer

A) vancomycin 
B) bacitracin 
C) chloramphenicol 
D) streptomycin 
E) clindamycin 
A) vancomycin 
B) bacitracin 
C) chloramphenicol 
D) streptomycin 
E) clindamycin

Question 14

Which of the following is not a therapeutic benefit of interferon?

Accepted Answer

A) reduces healing time 
B) increases white blood cell count 
C) prevents or reduces some cold symptoms 
D) slows progress of some cancers 
E) treats hepatitis C 
A) reduces healing time 
B) increases white blood cell count 
C) prevents or reduces some cold symptoms 
D) slows progress of some cancers 
E) treats hepatitis C

Question 15

Which antibiotic is used to treat MRSA and VRE infections?

Accepted Answer

A) synercid 
B) clindamycin 
C) linezolid 
D) azithromycin 
E) clarithromycin 
A) synercid 
B) clindamycin 
C) linezolid 
D) azithromycin 
E) clarithromycin

Question 16

Resistance genes can be transferred to other bacterial cells during transformation,transduction,and conjugation.

Accepted Answer

A) True 
 B)False

Question 17

Drug susceptibility testing determines

Accepted Answer

A) the patient's response to various antimicrobials. 
B) the pathogen's response to various antimicrobials. 
C) if normal biota will be affected by antimicrobials. 
D) if the drug is increasing to toxic levels in a patient. 
A) the patient's response to various antimicrobials. 
B) the pathogen's response to various antimicrobials. 
C) if normal biota will be affected by antimicrobials. 
D) if the drug is increasing to toxic levels in a patient.

Question 18

Antibiotics are derived from all of the following except

Accepted Answer

A) Penicillium. 
B) Bacillus. 
C) Staphylococcus. 
D) Streptomyces. 
E) Cephalosporium. 
A) Penicillium. 
B) Bacillus. 
C) Staphylococcus. 
D) Streptomyces. 
E) Cephalosporium.

Question 19

All _____ consist of a thiazolidine ring,a beta-lactam ring,and an R group.

Accepted Answer

A) penicillins 
B) tetracyclines 
C) macrolides 
D) cephalosporins 
E) aminoglycosides 
A) penicillins 
B) tetracyclines 
C) macrolides 
D) cephalosporins 
E) aminoglycosides

Question 20

Antimicrobial drugs that inhibit folic acid synthesis work with no side effects because mammals must get folic acid from their diet.

Accepted Answer

A) True 
 B)False

Exam 12: Drugs, Microbes, host-The Elements of Chemotherapy

Species of Bacillus produce bacitracin and the polymyxin drugs.

The use of vaginal inserts of Lactobacillus to restore a healthy acidic environment is an example of

Each of the following is a mechanism for drug resistance transfer between microorganisms except

Penicillins and cephalosporins

Which of the following is not a drug group used to treat fungal infections?

You have given a dosage of an antibiotic to a patient for his infection,but the patient is not getting any better.The MIC tests shows that the drug that you prescribed,at the dosage that was given,should work against this particular strain of bacterium.What do you think might be the problem?

All of the following pertain to fluoroquinolones except

A chemical that inhibits beta-lactamase enzymes is

The use of antibiotics in cattle feed leads to the development of antibiotic-resistant bacteria.

The MIC is the smallest concentration of an antimicrobial required to inhibit the growth of the microbe.

Ampicillin,amoxicillin,mezlocillin,and penicillin G all have

Antiviral drugs that target reverse transcriptase would be used to treat infections caused by:

What antibiotic is mixed with neomycin and polymyxin to make an antibiotic ointment (Neosporin)for superficial skin infections?

Which of the following is not a therapeutic benefit of interferon?

Which antibiotic is used to treat MRSA and VRE infections?

Resistance genes can be transferred to other bacterial cells during transformation,transduction,and conjugation.

Drug susceptibility testing determines

Antibiotics are derived from all of the following except

All _____ consist of a thiazolidine ring,a beta-lactam ring,and an R group.

Antimicrobial drugs that inhibit folic acid synthesis work with no side effects because mammals must get folic acid from their diet.

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods for the Culturing of Microscopic Analysis of Microorganisms

Prokaryotic Profiles: The Bacteria and Archaea

Eukaryotic Cells and Microorganisms

An Introduction to the Viruses

Microbial Nutrition, Ecology, and Growth

Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering and Recombinant Dna

Physical and Chemical Control of Microbes

Microbe-Human Interactions: Infection and Disease

Host Defenses I: Overview and Nonspecific Defenses

Host Defenses II: Specific Immunity and Immunization

Disorders in Immunity

Diagnosing Infections

Infectious Diseases Affecting the Skin and Eyes

Infectious Diseases Affecting the Nervous System

Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Infectious Diseases Affecting the Respiratory System

Infectious Diseases Affecting the Gastrointestinal Tract

Infectious Diseases Affecting the Genitourinary System

Microbes and the Environment

Applied Microbiology and Food and Water Safety

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