What you will learn in The four families

1. 1. One rule, four families

   The same reaction under four different names, with the water counted.

2. 2. Sugars, and why cellulose is not food

   Two polymers built from identical glucose, differing in one bond orientation.

3. 3. Fats and membranes

   Why a kink in a chain lowers a melting point, at constant chain length.

4. 4. Proteins: four levels

   Which interaction holds each level of structure, found by removing them.

5. 5. Breaking shape

   What denaturation destroys, with the sequence on screen throughout.

6. 6. Nucleotides, and the food tests

   Four standard tests, and what a negative result does and does not tell you.