Gce Model Questions Vol1 2025 Biology Question 20

A cell carries out aerobic respiration of one molecule of glucose. The following data are given:\n\n- Glycolysis: net production of 2 ATP and formation of 2 NADH. Each NADH produced in glycolysis is transferred into the mitochondrion via the glycerol‑3‑phosphate shuttle, yielding 1.5 ATP per NADH.\n- Pyruvate oxidation (link reaction): produces 2 NADH, each yielding 2.5 ATP in the mitochondrion.\n- Krebs cycle (per glucose): yields 2 ATP (substrate‑level), 6 NADH and 2 FADH\(_2\). Each mitochondrial NADH yields 2.5 ATP and each FADH\(_2\) yields 1.5 ATP.\n\nCalculate the net total number of ATP molecules generated from the complete aerobic oxidation of one glucose molecule under these conditions.