Cytosol

Fermentation mnemonics

No oxygen? Regenerate NAD⁺ or glycolysis stops.

The point

Fermentation regenerates NAD⁺ — the ATP came from glycolysis

Cori cycle accounting

2 ATP made in muscle − 6 spent in liver = net −4: it buys time, not energy

A mnemonic only sticks once you have used it. The quiz and the rebuild below both draw on these exact steps.