During respiration, what happens to oxygen and carbon dioxide?

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Prepare for the WJEC GCSE Chemistry Exam with multiple choice questions and detailed explanations. Enhance your knowledge and boost your confidence. Get exam-ready today!

Multiple Choice

During respiration, what happens to oxygen and carbon dioxide?

Explanation:
During respiration, cells use oxygen to release energy and produce carbon dioxide as a waste product. So the amount of oxygen in the body falls while the amount of carbon dioxide rises. In the lungs, gas exchange moves oxygen from the air into the blood and carbon dioxide from the blood into the air to be exhaled, so the air you exhale ends up with less oxygen and more carbon dioxide than the air you inhaled.

During respiration, cells use oxygen to release energy and produce carbon dioxide as a waste product. So the amount of oxygen in the body falls while the amount of carbon dioxide rises. In the lungs, gas exchange moves oxygen from the air into the blood and carbon dioxide from the blood into the air to be exhaled, so the air you exhale ends up with less oxygen and more carbon dioxide than the air you inhaled.

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