CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
11th Edition
ISBN: 9780134683461
Author: Urry
Publisher: PEARSON
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Chapter 22.3, Problem 1CC
Explain how the following Statement is inaccurate: "Antibiotics have created drug resistance in MRSA."
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Penicillin was first used in the 1940s to treat gonorrhea infections produced by the bacterium Neisseria gonorrhoeae. In 1984, according to the CDC, fewer than 1% of gonorrhea infections were caused by penicillin-resistant N. gonorrhoeae. By 1990, more than 10% of cases were penicillin resistant and a few years later the level of resistance was 95%.
Explain the various ways this resistance could be spread among the cells. Could this resistance pass to other infectious bacteria from N. gonorrhoeae?
The epidemiological or disease triangle is a model of disease causation that proposes three factors contribute to an outbreak - an agent that causes the disease, a susceptible
host, and an environment that brings the host and agent together. Some general changes within these three factors that may cause an infectious disease to emerge include:
A. changes in populations or behavior of reservoir hosts or intermediate hosts
B. microbial genetic mutation and viral genetic recombination or assortment
C. environmental factors such as an increase in precipitation
D. all of the above
E. none of the above
The epidemiological or disease triangle is a model of disease causation that proposes three factors contribute to an outbreak – an agent that causes the disease, a susceptible host, and an environment that brings the host and agent together. Some general changes within these three factors that may cause an infectious disease to emerge include:
A.
changes in populations or behavior of reservoir hosts or intermediate hosts
B.
microbial genetic mutation and viral genetic recombination or assortment
C.
environmental factors such as an increase in precipitation
D.
all of the above
E.
none of the above
Chapter 22 Solutions
CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
Ch. 22.1 - How did Hutton's and Lyell's ideas influence...Ch. 22.1 - MAKE CONNECTIONS Scientific hypotheses must be...Ch. 22.2 - How does the concept of descent with modification...Ch. 22.2 - WHAT IF? If you discovered a fossil of an extinct...Ch. 22.2 - MAKE CONNECTIONS Review the relationship between...Ch. 22.3 - Explain how the following Statement is inaccurate:...Ch. 22.3 - How does evolution account for (a) the similar...Ch. 22.3 - Prob. 3CCCh. 22 - Why was the age of Barth important for Darwin's...Ch. 22 - Describe how overreproduction and heritable...
Ch. 22 - Summarize the different lines of evidence...Ch. 22 - Level 1: Knowledge/Comprehension 1. Which of the...Ch. 22 - Which of the following observations helped Darwin...Ch. 22 - Prob. 3TYUCh. 22 - Prob. 4TYUCh. 22 - DNA sequences in manv human genes are very similar...Ch. 22 - EVOLUTION CONNECTION Explain why anatomical and...Ch. 22 - SCIENTIFIC INQUIRY DRAW IT Mosquitoes resistant...Ch. 22 - WRITE ABOUT A THEME: INTERACTIONS Write a Short...Ch. 22 - SYNTHESIZE YOUR KNOWLEDGE This honeypot ant (genus...
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