CLEAPSS Supporting practical science and technology
CLEAPSS Biology
Detailed guidance on how to carry out specific biology practical activities so they work and are safe.

Biology Procedures
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A more straight forward activity than that done traditionally. Includes all practical instructions and some brief notes on DCPIP.

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To help students understand how cell membrane integrity is affected by the environment surrounding the cell. Beetroot membranes are a good model for investigating this because the pigments that diffus.. more

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A simple investigation, with clear procedural advice, on looking at how chemicals affect the cytoplasm of red onion epidermal cells.

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A simple way to undertake a well-known practical to illustrate the principle of how surface area changes with respect to volume as cells or organisms increase in size.

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An updated procedure to safely look at human cheek cells under the microscope. Includes information on both health and safety and disposal, as well as some suggestions for more detailed work.

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Offers a straightforward method for investigating the effect of pH on an enzyme.

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A straightforward practical activity investigating how antimicrobial chemicals affect microbial growth on agar plates.

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A simple practical activity to discover the diversity of microbes swabbed from suitable locations.

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Thin layer chromatography is a quick and effective method of separating pigments within leaves. The pigments run clearly on the chromatogram with little outward spread, allowing Rf values to be calcul.. more

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A cigarette burning is an example of incomplete combustion of a complex mix of chemicals, wheremany of the products are toxic. This demonstration should reinforce the message that during smoking,even .. more

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