A cytotoxin typically attacks which of the following?

A cytotoxin typically attacks which of the following?

• A. Nerve tissue
• B. A specific type of cell, muscle group, or organ
• C. Blood vessels
• D. The brain

Answer: (B)

The main idea is that cytotoxins act directly on cells, often with selectivity for a particular cell type, muscle group, or organ. This happens because the toxin binds to specific receptors or is taken up by certain cells, causing cell injury or death. That cell-level targeting is what defines a cytotoxin, so it’s most accurate to say it attacks a specific type of cell, a muscle group, or an organ. Neurotoxins, by contrast, are the ones that primarily affect nerve tissue or the brain, and other toxins may target blood vessels, but cytotoxins are described by their direct action on particular cells.

The main idea is that cytotoxins act directly on cells, often with selectivity for a particular cell type, muscle group, or organ. This happens because the toxin binds to specific receptors or is taken up by certain cells, causing cell injury or death. That cell-level targeting is what defines a cytotoxin, so it’s most accurate to say it attacks a specific type of cell, a muscle group, or an organ. Neurotoxins, by contrast, are the ones that primarily affect nerve tissue or the brain, and other toxins may target blood vessels, but cytotoxins are described by their direct action on particular cells.