Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 27, Problem 7RQ
Summary Introduction
To review:
The mechanism for the synthesis of peptide antibiotics.
Introduction:
There are various types of antibiotics that are associated with the inhibition and termination of the growth of various biotic agents. Antibiotics are widely used for the treatment of various diseases. The functioning methodology of each type of antibiotic may vary from one another.
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Why are b- lactam antibiotics only bactericidal to growing bacteria?
What is meant by ‘narrow spectrum antibiotics’?
10) If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-
resistance genes, what would happen in environments that lack antibiotics?
A) These genes would be maintained in case the antibiotics appear.
B) These bacteria would be outcompeted and replaced by bacteria that have lost these genes.
C) These bacteria would try to make the cost worthwhile by locating and migrating to
microenvironments where traces of antibiotics are present.
D) The number of genes conveying antibiotic resistance would increase in these bacteria.
11) When nonrandom mating occurs in a population so that individuals prefer to mate with similar
individuals, allele frequencies should
A) remain the same, but homozygotes will be overrepresented in the population.
B) remain the same, but heterozygotes will be overrepresented in the population.
C) change and heterozygotes will be overrepresented in the population.
D) change and homozygotes will be overrepresented in the…
Chapter 27 Solutions
Microbiology: An Evolving Science (Fourth Edition)
Ch. 27.1 - Prob. 1TQCh. 27.1 - Prob. 2TQCh. 27.1 - Prob. 3TQCh. 27.1 - Prob. 4TQCh. 27.2 - Prob. 1TQCh. 27.2 - Prob. 2TQCh. 27.2 - Prob. 3TQCh. 27.3 - Prob. 1TQCh. 27.3 - Prob. 2TQCh. 27.3 - Prob. 3TQ
Ch. 27.3 - Prob. 4TQCh. 27.4 - Prob. 1TQCh. 27 - Prob. 1RQCh. 27 - Prob. 2RQCh. 27 - Prob. 3RQCh. 27 - Prob. 4RQCh. 27 - Prob. 5RQCh. 27 - Prob. 6RQCh. 27 - Prob. 7RQCh. 27 - Prob. 8RQCh. 27 - Prob. 9RQCh. 27 - Prob. 10RQCh. 27 - Prob. 11RQCh. 27 - Prob. 12RQCh. 27 - Prob. 13RQCh. 27 - Prob. 14RQCh. 27 - Prob. 15RQCh. 27 - Prob. 16RQCh. 27 - Prob. 17RQCh. 27 - Prob. 1TQCh. 27 - Prob. 2TQCh. 27 - Prob. 3TQCh. 27 - Prob. 4TQ
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- Antibotic/drug resistance in bacteria results from mutations induced by the anitbiotic which enhance fitness of the bacteria ensuring their survival. a) True b) Falsearrow_forwardWhat is a relevant biological process that can be used to briefly explain or illustrate the risks associated with antibiotics?arrow_forwardWhat is the origin of antibiotics? What is the history of antibiotics?arrow_forward
- 1) What is NDM-1? How can NDM-1 spread to different types of bacteria? 2) Why are Gram negative bacteria so much harder to treat with antibiotics? 3) What is KPC? Where does it live?arrow_forwardWhich of the following is TRUE when one assay bacteriophage titers? You should: a) first mix the phages with a live bacterial culture and then pour the mixture on the agar plate b) directly add the phage dilution onto the surface of an agar plate c) add tryptic soy broth to the phage dilution and incubate overnight d) incubate a phage solution with live bacterial cells for several minutes. You must add soft agar to the mixture before pouring the content on the agar platearrow_forwardWhat is the major source of antibiotics and what appears to be thenatural function of antibiotics in microbes that produce them?arrow_forward
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