Bacterial Exotoxins are Characteristically

Question

Bacterial exotoxins are characteristically
A)lethal only in very large amounts.
B)proteins.
C)non-specific in their mode of action.
D)produced only by bacteria which deeply invade tissues.
E)all of the above.

Accepted Answer

Bacterial exotoxins are proteins that are produced by some bacteria and secreted into the surrounding environment. They are often very potent and can cause a variety of harmful effects on the host organism. Because they are proteins, they are also quite specific in their actions, targeting particular cell types or biochemical pathways. They can be lethal even in small amounts, and do not require deep tissue invasion to be effective.