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The Ultimate Source Of Energy In Food Is ?

The ultimate source of energy in food is the sun. Plants use sunlight to convert water and carbon dioxide into sugars, which they store as starch or fat. Animals eat plants and other animals that have eaten plants, and they use these sugars to power their own activities.

The process of converting sugars into energy is called respiration. In humans, oxygen is used to oxidize glucose — a process known as cellular respiration — to produce carbon dioxide and water. This reaction releases energy that can be used to fuel all our body’s actions, including thinking and moving around.

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Last modified: August 17, 2022