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Definition of biohazard. : a biological agent or condition that is a hazard to humans or the environment; also : a hazard posed by such an agent or condition.
Metabolism Definition. Metabolism is the set of biochemical reactions involved in storing fuel molecules and converting fuel molecules into energy. Metabolism may also refer to the sequence of biochemical reactions compounds undergo inside a living cell. Metabolism or metabolic reactions include anabolic reactions and catabolic reactions. Also Known As: metabolic reactions, metabolic