In a eukaryotic cell, the complete oxidation of one glucose molecule through glycolysis, the citric acid cycle also known as the Krebs cycle or TCA cycle , and oxidative phosphorylation produces a net total of approximately 36 to 38 ATP molecules. The breakdown is as follows:1. Glycolysis: 2 ATP net and 2 NADH are produced per glucose molecule.2. Pyruvate decarboxylation: 2 NADH are produced per glucose molecule 1 per pyruvate .3. Citric acid cycle: 2 ATP, 6 NADH, and 2 FADH2 are produced per glucose molecule 1 ATP, 3 NADH, and 1 FADH2 per turn of the cycle, and the cycle turns twice per glucose molecule .Now, considering the oxidative phosphorylation through the electron transport chain:1. Each NADH molecule generates approximately 2.5 ATP molecules.2. Each FADH2 molecule generates approximately 1.5 ATP molecules.So, the total ATP production is:- Glycolysis: 2 ATP- Citric acid cycle: 2 ATP- Oxidative phosphorylation: 10 NADH 2.5 ATP/NADH + 2 FADH2 1.5 ATP/FADH2 = 25 ATP + 3 ATP = 28 ATPAdding all these values together, we get a total of 2 ATP glycolysis + 2 ATP citric acid cycle + 28 ATP oxidative phosphorylation = 32 ATP molecules. However, in eukaryotic cells, the transport of 2 NADH molecules produced in glycolysis from the cytoplasm to the mitochondria consumes 2 ATP molecules. Therefore, the net total of ATP molecules produced per glucose molecule in a eukaryotic cell is approximately 30 to 32 ATP molecules. The range 36-38 ATP mentioned earlier is due to variations in the efficiency of the electron transport chain and the transport of NADH into the mitochondria.