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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
Question
Why do cells need a constant supply of oxygen?
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Answer

Cells continuously need oxygen for the metabolic reactions that releases energy from the moIecules. This energy is used by cells for various functions of body.

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