Multiple Choice
Which of the following statements about the Kirby-Bauer disk diffusion assay is correct?
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1. Introduction to Microbiology
Introduction to Microbiology
Multiple Choice
All of the following are food-borne pathogens, except:
A
Escherichia coli O157:H7
B
Mycobacterium tuberculosis
C
Salmonella enterica
D
Listeria monocytogenes
Verified step by step guidance1
Step 1: Understand the definition of a food-borne pathogen. These are microorganisms that cause disease and are transmitted to humans through contaminated food.
Step 2: Review each listed organism to determine if it is commonly associated with food-borne illness:
- Escherichia coli O157:H7 is a well-known food-borne pathogen causing severe gastrointestinal illness.
- Salmonella enterica is a classic food-borne pathogen responsible for salmonellosis, often linked to contaminated poultry and eggs.
- Listeria monocytogenes is a food-borne pathogen that can cause listeriosis, especially in ready-to-eat foods and dairy products.
Step 3: Consider Mycobacterium tuberculosis, which primarily causes tuberculosis, a respiratory disease transmitted through airborne droplets, not through food.
Step 4: Conclude that Mycobacterium tuberculosis is not classified as a food-borne pathogen, unlike the other organisms listed.
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