EBK BIOLOGY:SCIENCE F/LIFE
6th Edition
ISBN: 9780134819167
Author: BELK
Publisher: PEARSON
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Chapter 12, Problem 10LTB
Summary Introduction
Introduction:
Natural selection is a natural process which favors the survival of the fittest. It is a slow and long process with increased chances of survival. Natural selection is controlled by nature and involves all types of organisms. Selection of the trait depends on adaptability and the entire population of the species is transformed. Antibiotics are the drugs that kill microbes including the bacteria. Antibiotics are effective in controlling the infections in patients through their immune system.
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Some bacteria produce the enzyme penicillinase, which breaks the beta-lactam ring in the penicillin molecule and converts it into penicilloic acid, which is harmless to bacteria. This is an example of which of the following mechanisms of antibiotic resistance?
which option below is the answer?
Destruction or inactivation of the antibiotic by the microbe
Preventing penetration to the target site within the microbe
Alteration of the drug’s target site(s) within the microbe
None of the other four answers are correct
Rapid ejection (pumping) of the drug out of the microbial cell
What are three public health measures that could reduce the probability that bacteria will develop resistance to antibiotics? Be specific in your description, and remember to include evidence to support your answer.
The clear zone around an antibiotic disk
Multiple Choice
is a plaque indicating the bacteria got killed
is a zone of inhibition
is a zone of inhibition indicating resistance of microbes
is a zone of inhibition indicating susceptibility of microbes
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