NESTER'S MICROBIOLOGY-CONNECT >CUSTOM<
9th Edition
ISBN: 9781265432287
Author: Anderson
Publisher: MCG CUSTOM
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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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19. On the diagram below
a. Label the three pictures as: DNA; polypeptide; or RNA.
b. Label the arrows as: translation or transcription/RNA processing.
c. Add the following details to the diagram.
Promoter region
TATA box
Transcription start site
Transcription terminator
Intron (A,B,C,D)
Exons (1,2,3,4,5)
Splice sites
5' cap
5' UTR (untranslated region)
3' poly A tail
3' UTR (untranslated region)
Translational start (AUG)
Translational stop (UGA, UAG, or UAA)
N and C ends of polypeptide
0000
Match the letter labels in the figure below to the terms. Some letter
labels are not used.
MNNNNNNIN
M
C
B
A
M
D
F
E
H
K
G
8
Chapter 20 Solutions
NESTER'S MICROBIOLOGY-CONNECT >CUSTOM<
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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