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Cambridge IGCSE Biology, topic 4

Biological molecules

Living things are built from a small set of large molecules: carbohydrates, fats, proteins and DNA. This topic covers the elements they contain, how they are built from smaller units, and the chemical tests used to identify them in food.

Subtopics

Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each.

  1. 1Biological molecules Spec 4.1Elements in carbohydrates, fats and proteins, how large molecules are built, the food tests, and the structure of DNA.NotesQuestions 7Flashcards 14

Whole topic

When you have done the subtopics: test yourself on everything, or print the lot.