<prompt> One Krebs cycle generates how many ATP6102436  <response>: In older calculation it is 12.newly it;s 10 ATP Generating Steps in TCA Cycle There are 3 NADH molecules generated during one cycle, each of them will give rise to 2 12 ATPs on oxidation by electron transpo chain ETC; so altogether they will give 3 x 2 12 7 12 7.5 high energy phosphates. The FADH2 will generate 1 12 molecules of ATP. In addition, one molecule of GTP equivalent to one molecule of ATP is formed by substrate-level phosphorylation. Hence, per turn of the cycle, 10 high energy phosphates are produced.Ref: DM Vasudevan Textbook of Medical Biochemistry, 6th edition, page no: 220 