Exotoxins are____________________?
Correct answer: B. Protein compound
- A. Lipid-polysaccharide complex
- B. Protein compound
- C. Lipoprotein
- D. None
Explanation
Exotoxins are soluble protein toxins actively secreted by certain bacteria, unlike endotoxin, which is the lipopolysaccharide component of Gram-negative outer membranes. Their protein nature also explains why many exotoxins can be converted into toxoids.
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