Biology
Anaerobic vs Aerobic Metabolism
Quick fact
Aerobic metabolism yields up to 38 ATP per glucose molecule, while anaerobic metabolism yields only 2 ATP per glucose, yet anaerobic pathways can provide energy rapidly without oxygen.
Why this is interesting
You're sprinting, out of breath, your muscles burn—why does your body feel like it's running out of 'fuel' even though you're consuming oxygen? That burning sensation is a clue to two different metabolic pathways.