From the oxidation of one molecule ...
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From the oxidation of one molecule of palmitic acid (fatty acid), the number of ATP molecules gained as net are (1) 131 (2) 129 (3) 38 (4) 142

NEET/Medical Exams
Biology
Solution
131
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Oxidation of of palmitic acid yields 7 ( mathrm{NADH}+7 mathrm{FADH} 2+8 mathrm{acetyl-CoA} ) in 7 cycles of mitochondrial beta oxidation Every acetyl-CoA yields ( 3 mathrm{NADH}+1 ) FADH2 + 1 GTP (=ATP) during Krebs cycle. Considering an average production of ( 2.5 mathrm{ATP} / mathrm{NADH} ) and 1.5 ATP/FADH2 using the respiratory chain, you have 108 ATP molecules. However, 2 ATP molecules were consumed during the initial activation of Palmitate to Palmitoyl-CoA which is going to be oxidized in the mitochondria. So, net energy output ( =(108-2)=106 ) ATP. Answer 129 ATP is according to old concept and in modern practice, this theoretical yield is not attained. So, practically net ATP gain is 106 ATP. Thanks!
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