How many molecules of ATP are generated when stearic acid , an 18-carbon saturated fatty acid, is completely oxidized via the beta-oxidation pathway in the mitochondria?

a) 112
b) 129
c) 146
d) 163

Explanation:

To calculate the ATP generated in complete beta-oxidation of stearic acid (an 18-carbon saturated fatty acid ),

     number of rounds of beta-oxidation =   ,

                                           where ,n is number of carbon present in fatty acid                                        since , n= 18 in give fatty acid

      number of rounds of beta-oxidation =

 8 rounds of beta-oxidation gives :-

    -8

    -8

    -8 +

   Each rounds of beta oxidation gives 17 ATP , So 8 rounds of beta-     oxidation gives 17 × 8 = 136 ATP , while theres's an extra which also undergoes in Krebs cycle along with other 8 , though this extra produce 12 ATP . While 2 molecules of ATP is consumed in activation of fatty acid , So total energy generated in beta-oxidation of stearic acid is 146 .    

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !

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