nslecture16notes 2

# nslecture16notes 2 - Lecture 16 Part II III. Metabolism of...

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Lecture 16 Part II III. Metabolism of Glucose - One mole of Glucose - 1. C6H12O6 + 6 O2 = 6CO2 + 6H2O –> 684 kcal - take glucose and add oxygen from air to every cell that needs that oxygen in final step of oxidative phosphorylation – blow off carbons and water - take amount of CO2 blown off and divide it by O2 taken in – Respiratory Quotient (RQ) - RQ = 6CO2/6O2 = 1 - respiratory quotient – tells us amount of energy that will be released anytime we burn anything that has this ratio of CO2 to O2 equivalent to 1 - RQ – relates the consumption to amount of calories we are actually burning: critical component in estimating the amount of energy we're expending - RQ turns out to be very different in fat – very dense, much more energy: - 1 mole + 80 moles O2 = 56 moles CO2 + H2O + 8480 Kcal - RQ = 56 moles CO2/80 moles O2 = 0.718partial - if we know RQ we know - what fuel you are burning: after measuring O2 consumption and CO2 expulsion, if RQ is close or equal to 0.7 – we know you are burning fat - as RQ decreases – amount of fat you are burning increases - when RQ = 1 – burning carbohydrate - as RQ increases – amount of carbohydrate burning increases - so if you look at RQ any time after measuring amount of O2 in and CO2 coming out – you can

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## This note was uploaded on 03/16/2010 for the course NS 1150 at Cornell.

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nslecture16notes 2 - Lecture 16 Part II III. Metabolism of...

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