Exotoxins

A patient has pseudomembranes on their pharynx and an enlarged neck. What is the mechanism of the exotoxin involved?

Inactivate EF2

Inactivate 60S ribosome

Lecithinase degrades tissue and cell membranes

Overactivate adenylate cyclase

A patient has been experiencing voluminous "rice water" diarrhea for 3 days. What is the mechanism of the exotoxin?

Overactivate adenylate cyclase

Overactivate guanylate cyclase

Permanently activate Gs

Permanently activate Gi

Disabling Gi

A child inhales with a "whoop" and coughs wetly on expiration. What is the mechanism of the toxin?

Overactivate adenylate cyclase

Overactivate guanylate cyclase

Permanently activate Gs

Permanently activate Gi

Disabling Gi

A bacterium contains an exotoxin that mimics adenylate cyclase. This bacterium causes black eschars on the body. What is the name of the toxin?

Alpha toxin

TSST-1

Pyogenic exotoxin A

Edema toxin

A patient eats undercooked hamburger and begins seeing blood in their watery stool. What is the MoA for the exotoxin involved?

Inactivate EF2

Inactivate 60S ribosome

Lecithinase degrades tissue and cell membranes

Overactivate adenylate cyclase

A child inhales with a "whoop" and coughs wetly on expiration. The action of this bacterium's toxin is most closely related to that of ____?

Bacillus

Shigella

Pseudomonas

Strep pyogenes

The MoA of S. pyogene's exotoxin is most like which bacterium's?

C. tetani

C. botulinum

C. perfringens

C. diphtheriae

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