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How does oxygen in air helps in breakdown of food ?

Oxygen present in the air is taken inside the body through nostrils and lungs and then transferred to every tissue of the body via blood. This oxygen convert the digested form of food (glucose) into carbon dioxide, water and energy (ATP). So, oxygen does not act directly on food but act on glucose that get absorbed by the body after digestion of food.

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After the large molecules in food are broken down into their smaller subunits, the small molecule can be further broken down to transfer the energy to ATP. during cellular respiration food is broken down with the help of oxygen

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After the large molecules in food are broken down into their smaller subunits, the small molecule can be further broken down to transfer the energy to ATP. during cellular respiration food is broken down with the help of oxygen

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The oxygen present in the air helps to break down the glucose molecules in the food and give us energy through a process called oxidation of food.

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The oxygen present in the air helps to break down the glucose molecules in the food and give us energy through a process called oxidation of food.

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