Uploaded September 2023 | Updated September 2026, 1 day ago

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You can find all my A Level Biology videos fully indexed at freesciencelessons.co.uk/a-level-revision-videos/a-level-biology

In this video, we look at the respiratory quotient. First I discuss the purpose of the respiratory quotient. We then look at how to calculate the respiratory quotient for both carbohydrates and lipids. I then explain why it is difficult to calculate the respiratory quotient for proteins.