Bio- Respiration ATP Net Yield

Test Preparation
1

<p>Well, in the sparknotes online study guides it says..........
"Four ATP molecules are produced by glycolysis and the Krebs cycle combined. The electron transport chain produces 34 ATP."</p>

<p>However, in the Barrons and CliffsAP book it says the electron transport chain (oxidative phosphorylation) produces 32 ATP for a total of 36 ATP in aerobic respiration. </p>

<p>I always thought that the later was correct--- which is it?????? Im getting really confused here :confused:...</p>

2

<p>Both are correct as there is a discrepancy of whether to count the 2 ATP or not.</p>

3

<p>there's a total production of 38 ATP, and a net production of 36 ATP (because of the 2 ATP invested in glycolysis). Usually, we care about the net production.</p>