Question

In: Chemistry

Calculate the theoretical number of glucose molecules that can be synthesized from complete oxidation of tripalmitin....

Calculate the theoretical number of glucose molecules that can be synthesized from complete oxidation of tripalmitin. Assume that synthesis begins at pyruvate and that all ATP produced from tripalmitin oxidation is used directly for glucose synthesis.

Solutions

Expert Solution

Interestingly (fat synthesis from carbohydrate) synthesis of tripalmitin requires 14 moecues of glucose, but reverse reaction is not same.

This will be indirectly measured from oxidation reactions as this is not occurs biologically.

Glucose complete oxidation gives: C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O

tripalmitin complete oxidation gives: 2 C51H98O6 + 145 O2 --> 102 CO2 + 98 H2O

from above two balanced chemical reactions, we can conclude that 6 moles CO2 & 6 moles H2O are required to synthesize one molecule of glucose. In this way from 1 molecule of tripalmitin gives 102 / 2 = 51 moles of CO2 and 98 / 2 = 49 moles of H2O.

Dividing both above results with 6 gives how many glucose molecules can be prepared.

51 / 6 = 8.5 ; 49 / 6 = 8.17   ~ 8

Hence theoretically eight molecules of glucose can be synthesized from complete oxidation of tripalmitin.

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