system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which of the following is an example of a direct acting toxin?
assistant
The correct answer is  Direct-acting toxins:
Some toxins act directly by combining with a critical molecular component or cellular organelle. For example, in mercuric chloride poisoning, mercury binds to the sulfhydryl groups of various cell membrane proteins, causing inhibition of ATP-dependent transport and increased membrane permeability.
Robin’s Textbook of pathology 10th edit Page 45