Answer:
10 conversions
Explanation:
The krebs cycle begins with the formation of Acetyl-CoA, in a sequence of reactions capable of oxidizing carbons into CO₂, in a total of 10 reactions.
These conversions are:
Steps 1-2: The acetyl group of acetyl-CoA is transferred to oxalacetic acid, forming citric acid (which gives one of the cycle names).
Steps 3-5: Oxidation and decarboxylation reactions occur to form ketoglutaric acid, this reaction releases CO2, H⁺ and NADH⁺ (which aids body enzymes in various processes)
.
Steps 6-7: Decarboxylation occurs once again, forming succinic acid, NADH⁺ and GTP (which provides energy for some cellular processes).
Step 8: Succinic acid is then oxidized to form fumaric acid, also forming FADH2 (energy carrier molecule).
Steps 9-10: Fumaric acid undergoes a hydration reaction forming the malic acid, which is finally oxidized to oxalacetic acid and restarting the krebs cycle.
