Question

Define internal Respiration.​

Answer 1

Internal respiration involves gas exchange between the bloodstream and tissues, and cellular respiration. Gas exchange in tissues is a result of tissue surface area, gas partial pressure gradients, and the blood perfusion of those tissues.

Answer 2

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products.

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