Question

This is a poisonous substance that is produced by living cells or organisms and is capable of causing disease when introduced into living tissues.

Answer 1

The substance you are describing is known as a **toxin**. Toxins are harmful compounds that can be produced by various organisms, including bacteria, plants, fungi, and animals. They can disrupt normal biological functions and lead to disease or injury when they enter living tissues. Examples of toxins include botulinum toxin (produced by Clostridium botulinum bacteria), tetrodotoxin (found in certain fish), and ricin (derived from castor beans).