1. Beta-oxidation cycles:
* A 16-carbon fatty acid undergoes 7 rounds of beta-oxidation.
* Each round produces:
* 1 molecule of FADH2
* 1 molecule of NADH
* 1 molecule of acetyl-CoA
2. ATP production from beta-oxidation:
* FADH2: 7 rounds * 1 FADH2/round * 1.5 ATP/FADH2 = 10.5 ATP
* NADH: 7 rounds * 1 NADH/round * 2.5 ATP/NADH = 17.5 ATP
3. ATP production from acetyl-CoA:
* Acetyl-CoA: 7 rounds * 1 acetyl-CoA/round = 7 acetyl-CoA
* Each acetyl-CoA enters the citric acid cycle, producing:
* 3 NADH * 2.5 ATP/NADH = 7.5 ATP
* 1 FADH2 * 1.5 ATP/FADH2 = 1.5 ATP
* 1 GTP (converted to ATP)
* Total ATP per acetyl-CoA: 7.5 + 1.5 + 1 = 10 ATP
* Total ATP from acetyl-CoA: 7 acetyl-CoA * 10 ATP/acetyl-CoA = 70 ATP
4. Total ATP:
* Total ATP from beta-oxidation: 10.5 + 17.5 = 28 ATP
* Total ATP: 28 ATP + 70 ATP = 98 ATP
Therefore, a saturated 16-carbon fatty acid generates approximately 98 ATP molecules.
Note: This is a simplified calculation. The actual ATP yield can vary slightly depending on the specific conditions and the efficiency of the electron transport chain.
