Question:
Hemolytic enterotoxin (HBL), nonhemolytic enterotoxin (Nhe), and cytotoxin K (CytK) are produced by _______
Hemolytic enterotoxin (HBL), nonhemolytic enterotoxin (Nhe), and cytotoxin K (CytK) are produced by _______
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Bacillus cereus causes two types of food poisoning: the diarrheal type (mediated by HBL, Nhe, and CytK) and the emetic type (mediated by the heat-stable peptide toxin cereulide).
Updated On: Jul 10, 2026
- Clostridium botulinum
- Bacillus cereus
- E. coli
- Shigella dysenteriae
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Certain bacterial pathogens produce complex protein toxins during vegetative growth in contaminated foods, causing foodborne illnesses.
Step 2: Detailed Explanation:
Bacillus cereus is a spore-forming foodborne pathogen that produces multiple toxins.
Its diarrheal type of food poisoning is caused by enterotoxins produced in the small intestine.
These include the three-component hemolytic enterotoxin (HBL), the three-component non-hemolytic enterotoxin (Nhe), and the single-component cytotoxin K (CytK).
In contrast, Clostridium botulinum produces neurotoxins, E. coli produces shiga-like or heat-labile/stable enterotoxins, and Shigella dysenteriae produces Shiga toxin.
Step 3: Final Answer:
Therefore, these enterotoxins are produced by Bacillus cereus.
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