This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Which of the following is a tripaite toxin? 
Select and explain. 
A. Diphtheria toxin, B. Anthrax toxin, C. Botulinum toxin, D. Cholera toxin
B: Anthrax toxin
Answer: B: Anthrax toxin 
Explanation: Anthrax toxin is tripaite toxin It consist of Edema factor Protective factor Lethal factor Diphtheria toxin made up of A and B fragments Active fragment causes ADP ribosylation of EF leads to inhibition of protein synthesis Botulinum toxin - it has anticholinergic action Cholera toxin - two component