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AS and A Level: Molecules & Cells

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  1. Food Test. Aim: To conduct tests for reducing and non-reducing sugars, starch, lipids and proteins

    Also, in this experiment, the observations during each food test would be recorded and the colour changes would be observed to identify whether each food contain any of the macromolecules which are being tested. Materials/Apparatus: * Glucose solution * Sucrose solution * Starch solution * Iodine/ Potassium Iodide solution * Copper Sulphate solution * Sodium Hydrogen Carbonate solution * Ethanol (90%) * Potassium Hydroxide * Cold water * Vegetable oil * Egg albumen * Bread crumbs * Crushed potato * Test tubes * Test tube holders * Test tube rack * Measuring cylinder * Water bath * Pasteur pipette (dropper)

    • Word count: 1336

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