大象传媒

Prescribed practicals

Part of Combined Science

  • Prescribed practicals

    • B1: Photosynthesis

      An investigation into the need for light and chlorophyll in photosynthesis by testing a leaf for starch.

    • B2: Food energy

      How to investigate the energy content of food by burning food samples.

    • B3: Enzymes

      How to investigate the effect of temperature on the action of an enzyme.

    • B4: Habitats

      How to use quadrats to investigate the abundance of plants and/or animals in a habitat.

    • B5: Osmosis

      How to investigate the process of osmosis by measuring the change in length or mass of plant tissue or model cells using Visking tubing.

    • B6: Measuring water uptake and water loss

      How to use a potometer (bubble and weight potometer) to investigate the factors affecting the rate of water uptake by a plant and washing line method to investigate the factors affecting the rate of water loss from leaves.

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