What do you mean by cold blooded and warm blooded?

Answer 1

Warm-blooded and cold-blooded refers to animals that produce their own body heat and do not produce their own body heat, respectively.

On a micro biologic level, certain mitochondria within all warmblooded animals are 'defective', in a manner of speaking, in that one of the methods normal mitochondria store energy is by creating a chemical charge across a membrane, and in these specific mitochondria, the membrane is porous. To move the chemicals across the membrane, the mitochondria expend energy, or ATP, which produces heat. Since the membrane is porous, and cannot hold a charge, the chemical pumps run constantly, using energy at a consistent rate, and producing heat.

Warm-blooded animals have these mitochondria, and thus produce their own body heat. Humans are one example. Cold-blooded animals do not have these mitochondria, or if they do, have them in such small amounts that they cannot heat the animal's body sufficiently. Snakes and lizards are cold-blooded, which is why they can often be found in warm spots, basking in the heat of the sun.