Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
A bowl of rice, a piece of paper and a strand of your own hair look nothing alike, yet burn to the same few elements. Living things are built from a small set of molecules: sugars, fats, amino acids and nucleotides, joined into starch, proteins and DNA. In this chapter you analyse what a cell is made of, see how the building blocks join, learn how proteins fold and nucleic acids store information, and meet the enzymes that run every reaction in the body. Python counts atoms, builds peptides and fits enzyme curves.