Which statement regarding exotoxins and endotoxins is true?

Question

Quizplus · Accepted Answer

Endotoxin is a component of the cell wall of gram-negative bacteria and is released upon the death or lysis of the bacteria. Exotoxins are secreted by living bacteria.

Answer: D
 Both endotoxins and exotoxins interact with specific receptors on host cells, leading to the pathological effects associated with the toxins. However, endotoxins target a broader range of host cells and can cause systemic effects, while exotoxins tend to have more specific effects on particular cell types.

Option A is incorrect because while some exotoxins and endotoxins can be immunogenic, this is not universally true, and not all toxins produce strong protective antibodies.

Option B is incorrect because exotoxins can also have systemic effects, depending on the toxin and the host response.

Which Statement Regarding Exotoxins and Endotoxins Is True