the Tricarboxylic Acid (TCA) cycle (Krebs' cycle) begins with the condensation of an acetyl group (from Acetyl CoA) with oxaloacetic acid (OAA) and water to yield citric acid . Statement 3 is incorrect because it identifies pyruvic acid as the condensation partner; pyruvic acid is actually the substrate that is converted into Acetyl CoA before entering the cycle . All other statements are facts supported by the text: there are three points where NAD+ is reduced, one point where FAD+ is reduced, and GTP is synthesized during the conversion of succinyl-CoA to succinic acid .