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Molecules from food and molecules of oxygen move from the mouth and the nose to cells of the body through a series of blood vessels, including veins, arteries, and microscopically small blood vessels (capillaries), that extend throughout the body.

From food we get glucose in the form of monosaccharide one gets this by the process of cellular respiration, and from air one gets oxygen.  

• The energy within the food is converted into the energy, which can be used by the cells of the body by the process of cellular respiration.  

• The sugars we take at the beginning get digested into the simple sugar, glucose. By the process of cellular respiration, the glucose obtained from the food, and the oxygen obtained through air get transformed into carbon dioxide, and water, and the energy gets transferred to ATP. This energy is used up by the cells.

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https://brainly.com/question/24924540

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