Sunday, April 25, 2010

Words of the Week (18)


TOXIN POISON VENOM -- What are the differences? http://wiki.answers.com/Q/What_is_the_difference_between_poisonous_and_venomous Toxin - any substance that can cause harm Poison - a toxin that causes its effect through ingestion or absorption Venom - a toxin that causes its effect through administration via a specialized delivery system. A good example is tetrodotoxin, a toxin that can be a poison or venom. It is a poison in puffer fish, causing its effect when tissues from this fish are eaten. It is venom in the blue-ringed octopus, being stored in salivary glands and delivered into a wound caused by the beak of the octopus. Thus, snakes are venomous since the toxin is delivered via specialized apparatus while poison arrow frogs are poisonous since the toxin is absorbed.

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