The number of ATP molecules produced by electron transport system from Krebs cycle intermediates in a single turn is _________.
A
11
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B
12
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C
14
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D
16
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Solution
The correct option is A 11 Total energy production is 3 NADH + H+, 1 FADH2 and 1 ATP/GTP. Intermediates form ATP on ETS. It is 3 x 3 (for NADH + H+), 2 x 1 (for FADH2) or 11.