A) Ricin is not a microbe
B) It does not grow inside the body
C) It cannot be passed from person to person
D) Ricin disrupt nerve transmission and can cause death in minutes
Correct Answer: D
Solution :
[d] Ricin is a highly toxic, naturally occurring lectin (a carbohydrate-binding protein) produced in the seeds of the castor oil plant, Ricinuscommunis. A dose of purified ricin powder the size of a few grains of table salt can kill an adult human. Most acute poisoning episodes in humans are the result of oral ingestion of castor beans, 5-20 of which could prove fatal to an adult. However, swallowing castor beans rarely proves to be fatal unless the bean is thoroughly chewed. The survival rate of castor bean ingestion is 98%.
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