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Retired NBME 27 Answers

nbme27/Block 3/Question#14 (reveal difficulty score)
An investigator studying the energy ...
One ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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submitted by โˆ—shak360(20)
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The reduction of a single molecule of FADH2 leads to the generation of two molecules of ATP. Vitamin B2 -> FAD and FMN are derived from riboFlavin -> B2 = 2 ATP.

In contrast, the reduction of a single molecule of NADH leads to the generation of three molecules of ATP. Vitamin B3 -> NAD are derived from Niacin -> B3 = 3 ATP.

Only one molecule of ATP is required to secrete a single proton into the gastric lumen.

Taking into account the ATP generated both directly and indirectly (through the reduction of NADH and FADH2), the theoretical maximum number of ATP generated by metabolizing a single molecule of glucose is 38.

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