Question

Net gain of ATP in prokaryotes from a molecule of glucose when oxidize is of glucose when oxidized is

• A. 40
• B. 38
• C. 36
• D. 34

Answer 1

Answer: (B)

38

Answer 2

During complete oxidation of one molecule of glucose the net ATP yield is $38$ ($8$ from glycolysis $+ 24$ from Kreb cycle $+ 6$ from ETC) in prokaryotes. It is $36$ or $38$ in eukaryotes depending upon the shuttle system. Shuttle system is absent in prokaryotes.