| Measure | Value |
|---|
A teaching model of a healthy adult with rounded, typical values. Organs are drawn as city districts and the blood as roads; each moving shape stands for a large flow of molecules. Changes are sped up: a few seconds here stand for hours (or days in a prolonged fast). Not personal medical or diet advice.
| Item | Count | ATP value |
|---|
Uses about 2.5 ATP per NADH and 1.5 ATP per FADH₂ (NADH made in the cytosol is sometimes worth only 1.5 after crossing into the mitochondrion, so textbooks give a range). GTP from the citric acid cycle is counted as ATP. Real cells never make exactly these numbers; they are bookkeeping estimates.
Make your prediction first. After you answer (or press Show me), the matching animation plays, and calculation problems show a worked solution with units cancelling (struck through in red).
Your job
Drag a card onto a box, or tap a card and then tap the box's name. Cards are buttons, so Tab and Enter work too.
Fictional adults and rounded teaching values. For learning only, not personal medical or diet advice.
Wrong picks are fine here. Each one tells you why.