Problem
I. Compare and contrast endotoxins and exotoxins. Specifically address their source, composition, effect on the host, and heat stability. Also, compare their LD50s.
II. (i) Explain what a capsule is and how it functions as a virulence factor. (ii) Besides bacteria, do any of the pathogenic eukaryotic microorganisms produce a capsule?
III. List and describe the five steps of pathogenesis.
IV. Describe two ways bacterial pathogens can initiate endocytosis into a nonphagocytic host cell.