What is the underlying reason for the difference in the yield of ATP from the co

Question

What is the underlying reason for the difference in the yield of ATP from the complete oxidation of one mole of glucose in brain cells compared to that in heart cells? A more efficient shuttle system is used in heart cells compared to the shuttle system used in brain cells. The level of dissolved O_2 is greater in heart cells than it is in brain cells. The ATP synthase complex is more efficient in brain cells compared to heart cells. Glucose transport to brain cells is less efficient than it is to heart cells

Explanation / Answer

Ans A a more efficient shuttle system is used in heart cells compared to the shuttle system used in brain cells.

Brain cells have glycerol 3 phosphate shuttle which involves the loss of 1 ATP per NADH molecule formed as result of glycolysis.

Whereas heart cells have mala aspartate shuttle, so the total yield of ATP per glucose molecule is more here.

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