Internal respiration may be defined as:(a) breathing in and releasing of oxygen in the tissue(b) the oxidation of food substances to release energy(c) the building up (synthesis) of complex substances(d) getting rid of carbon dioxide that would accumulate in the tissues.

(b) the oxidation of food substances to release energy.

Internal respiration is the metabolic process of diffusing oxygen from the blood, into the interstitial fluid and into the cells by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide, and energy (ATP).

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Updated on: 24-Mar-2023

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