MCB 2010 Exam 2 Questions with Complete Solutions 100% Solved| Grade A+
Which of the following is NOT a consideration for disinfectant use? brand of disinfectant
The ________ test was approved by the European Union to determine the capacity of a
chemical to inhibit bacterial growth. Kelsey-Sykes Capacity
Which of the following microorganisms are MOST resistant to antimicrobial agents?
myobacteria, prions
Which of the following is an example of a chemotherapeutic agent? sulfanilamide
Most antibiotics come from what source? bacteria
Who was the FIRST person to envision the use of chemicals to selectively kill pathogens without
harming the patient? Paul Ehrlich
Which of the following was the FIRST antimicrobial agent used to safely treat a wide array of
bacterial infections? sulfanilamide
All of the following are sources of antibiotics EXCEPT Staphylococcus species.
The property of a chemical agent to be more inhibitory for a pathogen than for the pathogen's
host is referred to as selective toxicity.
Which of the following BEST describes why it is difficult to develop antiviral drugs? Viruses
are hard to target because they use the host cell's enzymes and ribosomes to metabolize and
replicate.
, The mechanism of ________ is to inhibit the formation of the peptidoglycan layer in the
bacterial cell wall.
- penicillin
- cephalosporin
- beta-lactams all of the above
Which of the following BEST describes the mechanism of action of aminoglycoside
antimicrobials? They inhibit protein synthesis by targeting the 30S ribosome.
Oxazolidinones work to stop protein synthesis.
Which of the following does NOT describe the ideal antimicrobial agent? active in the body
for an extended period of time
What is one DISADVANTAGE associated with the use of broad-spectrum antibiotics? They
kill normal microbiota.
Why can the zones of inhibition for different antimicrobials NOT be compared against one
another for interpreting the results of a diffusion susceptibility test? differences in the rates
of diffusion of antimicrobials
What is the minimum inhibitory concentration (MIC)? the smallest amount of drug that will
inhibit the growth and reproduction of a pathogen
Which term best describes an agent that kills microbes, as opposed to temporarily inhibiting
their growth and reproduction? bactericidal
Why should tetracycline NOT be prescribed to pregnant women?
Which of the following is NOT a consideration for disinfectant use? brand of disinfectant
The ________ test was approved by the European Union to determine the capacity of a
chemical to inhibit bacterial growth. Kelsey-Sykes Capacity
Which of the following microorganisms are MOST resistant to antimicrobial agents?
myobacteria, prions
Which of the following is an example of a chemotherapeutic agent? sulfanilamide
Most antibiotics come from what source? bacteria
Who was the FIRST person to envision the use of chemicals to selectively kill pathogens without
harming the patient? Paul Ehrlich
Which of the following was the FIRST antimicrobial agent used to safely treat a wide array of
bacterial infections? sulfanilamide
All of the following are sources of antibiotics EXCEPT Staphylococcus species.
The property of a chemical agent to be more inhibitory for a pathogen than for the pathogen's
host is referred to as selective toxicity.
Which of the following BEST describes why it is difficult to develop antiviral drugs? Viruses
are hard to target because they use the host cell's enzymes and ribosomes to metabolize and
replicate.
, The mechanism of ________ is to inhibit the formation of the peptidoglycan layer in the
bacterial cell wall.
- penicillin
- cephalosporin
- beta-lactams all of the above
Which of the following BEST describes the mechanism of action of aminoglycoside
antimicrobials? They inhibit protein synthesis by targeting the 30S ribosome.
Oxazolidinones work to stop protein synthesis.
Which of the following does NOT describe the ideal antimicrobial agent? active in the body
for an extended period of time
What is one DISADVANTAGE associated with the use of broad-spectrum antibiotics? They
kill normal microbiota.
Why can the zones of inhibition for different antimicrobials NOT be compared against one
another for interpreting the results of a diffusion susceptibility test? differences in the rates
of diffusion of antimicrobials
What is the minimum inhibitory concentration (MIC)? the smallest amount of drug that will
inhibit the growth and reproduction of a pathogen
Which term best describes an agent that kills microbes, as opposed to temporarily inhibiting
their growth and reproduction? bactericidal
Why should tetracycline NOT be prescribed to pregnant women?
