NEET BIOLOGY

Detailed explanation-1: -Toxic chemicals are defined as ‘any chemical which through its chemical action on life processes can cause death, temporary incapacitation or permanent harm to humans or animals’.

Detailed explanation-2: -A toxic substance is a substance that can be poisonous or cause health effects. People are generally concerned about chemicals like polychlorinated biphenyls (PCBs) and dioxin which can be found at some hazardous waste sites.

Detailed explanation-3: -In biology, a poison is a chemical substance causing death, injury or harm to organisms or their parts.

Detailed explanation-4: -Toxins may be classified as exotoxins (those excreted by an organism, for example, bufotoxin) or endotoxins (toxins that are structurally part of bacteria, for example, botulinum). The most toxic compound is the toxin botulinum, produced by the bacterium Clostridium botulinum.