Question

Select characteristics exhibited by endotoxins, but not exhibited by exotoxins.

a Check All That Apply
b Composed of lipopolysaccharide
c Require very small doses to cause toxic effects
d Secreted from a living cell
e Heat-stable

Answer 1

Endotoxins are composed of lipopolysaccharide, require small doses to cause toxic effects, and are heat-stable.

Step-by-step explanation:

Endotoxins have several characteristic traits that differentiate them from exotoxins. Firstly, endotoxins are composed of lipopolysaccharide (LPS), while exotoxins are protein molecules. Secondly, a very small dose of endotoxins is required to cause toxic effects, whereas exotoxins can be lethal even in small concentrations. Lastly, endotoxins are heat-stable, whereas exotoxins are heat-labile and can be denatured at high temperatures.