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Biology journal Cambridge IGCSE 0610

Topic 4 of 21 · 1 of 1 modules ready

Biological molecules

The molecules of life, how they are built and how to test foods for them.

Modules

  1. A packed lunch on a table: a bread roll, a whole egg and a halved boiled egg, a wedge of cheese, an orange with peel, and a small bottle of cooking oil, beside a lunch tin and a folded cloth.

    Module 1 · syllabus 4.1 · 3 parts

    Food tests

    What is in this food?

    Find out which elements and building blocks make up carbohydrates, proteins and fats, then test orange juice and five mystery solutions with iodine, Benedict's, biuret, the emulsion test and DCPIP.

    1. What food is made of What food is made of: carbon, hydrogen, oxygen and nitrogen; big molecules from small ones
    2. Testing foods Testing foods: iodine, Benedict's, biuret, the emulsion test and DCPIP, each beside a water control
    3. The structure of DNA The structure of DNA: a double helix of two strands, with A paired to T and C to G (Supplement)

    Experiment Orange juice and five mystery solutions · five food tests, each beside a water control

    Open moduleExperimentTeacher pack
Syllabus statements for this topic · for teachers · 4 statements

Core for every pupil · Supplement also for Extended entry. Paraphrased from the Cambridge IGCSE Biology 0610 syllabus (2026–2028); check the official syllabus for exact wording.

4.1 Biological molecules

Covered in Food tests and biological molecules

  • 4.1.1Elements in carbohydrates, fats and proteinsC
  • 4.1.2Large molecules built from smaller unitsC
  • 4.1.3Food tests: starch, sugar, protein, fat, vitamin CC
  • 4.1.4DNA double helix and base pairingS