Every Bond Costs a Water

Almost every large molecule in a cell is the same trick repeated: small units, strung into long chains. Joining two of them removes a water molecule; breaking them apart adds one back. That is one reaction and its reverse, and between them they build and dismantle nearly everything you are made of. Watch each water form, leave, and come back — then watch the one class that plays by different rules.

AP BIOLOGY · 8 STEPS · 6 QUICK CHECKS · BUILD = REMOVE WATER · BREAK = ADD WATER · ONE WATER PER BOND · v1