Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
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Chapter 20, Problem 2CT
Summary Introduction
To review:
The change in the appearance of the zones of inhibition of the different antimicrobials if the medication concentrations in the strips were slightly decreased.
Introduction:
MIC is defined as the minimum inhibitory concentration. E-test is a process by which MIC can be determined for an antimicrobial agent. It is determined by reading the number where the growth of the microorganisms intersects the strips. A teardrop-shaped zone of inhibition is noted due to the gradient of concentration of the antimicrobials. A slight decrease in the concentration of antimicrobials will produce a narrower teardrop shaped zone of inhibition as compared to the one given in Figure 20.12.
In Figure 20.12, the image of an E-test is given showing the MIC determination. It shows the multiple strips containing a gradient of concentrations of antimicrobials. The MIC is shown by reading the number where the growth intersects the strip.
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Chapter 20 Solutions
Nester's Microbiology: A Human Perspective
Ch. 20 - Describe the difference between the terms...Ch. 20 -
2. Define therapeutic index and explain its...Ch. 20 -
3. Explain how penicillin-binding proteins (PBPs)...Ch. 20 - Name three classes of antimicrobial medications...Ch. 20 - Explain the roles of the first-line drugs versus...Ch. 20 -
6. Compare and contrast the method for...Ch. 20 - Name three targets that can be altered...Ch. 20 - What is MRSA? Why is it significant?Ch. 20 - Prob. 9SACh. 20 -
10. Explain the difference between the mechanism...
Ch. 20 - Which of the following targets would you expect to...Ch. 20 -
2. Penicillin has been modified to make...Ch. 20 -
3. Which of the following is the target of...Ch. 20 -
4. Which of the following statements is false?
a)...Ch. 20 - Prob. 5MCCh. 20 - Prob. 6MCCh. 20 - Prob. 7MCCh. 20 - Prob. 8MCCh. 20 - Prob. 9MCCh. 20 - Prob. 10MCCh. 20 - Prob. 1ACh. 20 - Prob. 2ACh. 20 - Prob. 1CTCh. 20 - Prob. 2CT
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