Which biological toxin is predominantly derived from the castor plant bean?

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Multiple Choice

Which biological toxin is predominantly derived from the castor plant bean?

Explanation:
Ricin is the toxin predominantly derived from the castor plant bean. It is a ribosome-inactivating protein found in the seeds of Ricinus communis. By enzymatically removing a specific adenine from the 28S ribosomal RNA, ricin halts protein synthesis and causes cell death. Its extreme potency means tiny amounts can be lethal, which is why it’s classically linked to castor beans. Other toxins listed come from different sources: botulinum toxin is produced by bacteria and causes paralysis; saxitoxin comes from certain marine organisms and blocks nerve signaling; aflatoxin is a fungal toxin that contaminates crops and is carcinogenic. Ricin is the one associated with castor beans.

Ricin is the toxin predominantly derived from the castor plant bean. It is a ribosome-inactivating protein found in the seeds of Ricinus communis. By enzymatically removing a specific adenine from the 28S ribosomal RNA, ricin halts protein synthesis and causes cell death. Its extreme potency means tiny amounts can be lethal, which is why it’s classically linked to castor beans. Other toxins listed come from different sources: botulinum toxin is produced by bacteria and causes paralysis; saxitoxin comes from certain marine organisms and blocks nerve signaling; aflatoxin is a fungal toxin that contaminates crops and is carcinogenic. Ricin is the one associated with castor beans.

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