How do the lungs and blood circulation together support cellular respiration?
Answer and explanation
Correct answer: The lungs add oxygen to the blood, and the blood carries it to cells
The governing concept is coordination between gas exchange and transport. In the alveoli of the lungs, oxygen from inhaled air diffuses into the blood, while carbon dioxide diffuses out. The circulatory system then carries oxygen, mainly bound to haemoglobin, to body cells. Cells use it to release energy from food during aerobic respiration, and the blood carries carbon dioxide back toward the lungs. Therefore option A is correct.
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What is the correct answer to this question?
The lungs add oxygen to the blood, and the blood carries it to cells
Why is this the correct answer?
The governing concept is coordination between gas exchange and transport. In the alveoli of the lungs, oxygen from inhaled air diffuses into the blood, while carbon dioxide diffuses out. The circulatory system then carries oxygen, mainly bound to haemoglobin, to body cells. Cells use it to release energy from food during aerobic respiration, and the blood carries carbon dioxide back toward the lungs. Therefore option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Life Processes. Topic: Respiration.
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