Respiration
Respiration is the process by which living organisms use oxygen to convert food into energy. In humans and animals, it involves inhaling oxygen through the lungs, which enters the bloodstream and reaches cells. There, oxygen helps break down glucose from food, releasing energy that fuels various bodily functions. This process also produces carbon dioxide as a waste product, which is expelled from the body when we exhale. In plants, respiration occurs in a similar way, though they also perform photosynthesis to produce the oxygen they need. Overall, respiration is essential for life, supporting growth, movement, and maintenance of bodily functions.
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Respiration is the process by which living organisms convert oxygen and glucose into energy. In humans and many animals, this occurs in the cells, where oxygen is inhaled into the lungs and then transferred to the blood. The blood delivers oxygen to the cells, where it combines with glucose from food to produce energy, along with carbon dioxide and water as byproducts. We exhale this carbon dioxide. This energy is essential for all bodily functions, from moving and thinking to growing and repairing tissues, making respiration vital for life.