Microbiology: An Introduction Plus Mastering Microbiology with Pearson eText -- Access Card Package (13th Edition) (What's New in Microbiology)
13th Edition
ISBN: 9780134688640
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 5MCQ
The ID50 for Campylobacter sp. is 500 cells; the ID50 for Cryptosporidium sp. is 100 cells. Which of the following statements is false?
- a. Both microbes are pathogens.
- b. Both microbes produce infections in 50% of the inoculated hosts.
- c. Cryptosporidium is more virulent than Campylobacter.
- d. Campylobacter and Cryptosporidium are equally virulent; they cause infections in the same number of test animals.
- e. Cryptosporidium infections are more severe than Campylobacter infections.
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Students have asked these similar questions
Match the terminology correctly with the definition in the table below (eg A=1).
TERMINOLOGY
DEFINITION
A. Aerosol
1. Disease caused by pathogen transfer
B. Airborne infection
2. Process to kill or remove pathogenic microorganism (not spores)
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D. Decontamination
4. Process to kill/remove all microorganisms including spores and viruses
E. Pathogen
5. Thick-walled resting cells formed by Gram+ organisms
F. Infection
6. Organism able to cause disease in a host
G. Disinfection
7. Suspension in air of finely dispersed solids or liquids
H. Viable microorganisms
8. Caused by inhaling airborne material carrying microbial contaminants
I. Sterilization
9. Prevention of microbial contamination
J. Spores (bacterial)
10. Disinfection or sterilization of contaminated articles
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A. Why is there a discrepancy between the frequency of H. pylori colonization and
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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%.
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Chapter 15 Solutions
Microbiology: An Introduction Plus Mastering Microbiology with Pearson eText -- Access Card Package (13th Edition) (What's New in Microbiology)
Ch. 15 - Compare pathogenicity with virulence.Ch. 15 - How are capsules and cell wall components related...Ch. 15 - Prob. 3RCh. 15 - Explain how drugs that bind each of the following...Ch. 15 - Prob. 5RCh. 15 - Prob. 6RCh. 15 - Prob. 7RCh. 15 - Which of the following genera is the most...Ch. 15 - How can viruses and protozoa avoid being killed by...Ch. 15 - Prob. 10R
Ch. 15 - The removal of plasmids reduces virulence in which...Ch. 15 - Prob. 2MCQCh. 15 - Prob. 3MCQCh. 15 - All of the following can occur during bacterial...Ch. 15 - The ID50 for Campylobacter sp. is 500 cells; the...Ch. 15 - Prob. 6MCQCh. 15 - A drug that binds to mannose on human cells would...Ch. 15 - The earliest smallpox vaccines were infected...Ch. 15 - Prob. 9MCQCh. 15 - Which of the following statements is true? a. The...Ch. 15 - Prob. 1ACh. 15 - Prob. 2ACh. 15 - Prob. 3ACh. 15 - How do each of the following strategies contribute...Ch. 15 - On July 8, a woman was given an antibiotic for...Ch. 15 - Explain whether each of the following examples is...Ch. 15 - Cancer patients undergoing chemotherapy are...
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