Multiple choice

one cycle of krebs cycle produces..........ATP

  1. 10

  2. 11

  3. 12

  4. 15
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

One turn of the Krebs cycle produces 3 NADH, 1 FADH2, and 1 GTP (or ATP). Converting these to ATP (3*2.5 + 1*1.5 + 1 = 10) gives 10 ATP, but older textbooks often cited 12 based on different P/O ratios (3*3 + 1*2 + 1 = 12). Given the options, 12 is the standard textbook answer.

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