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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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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This guide gives details of a simple demonstration of enzyme activity using the digestion of starch by amylase. It can also be used to investigate the impact of different conditions on how quickly.. more

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This document gives details of how to use a small scale small-scale Andrews apparatus (see also GL148 below) to  allow measurement of the time taken to collect the first bubble of gas produced by a re.. more

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A safe and effective small-scale method for preparing and staining root tips to show chromosomes.

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Explains, with photographs, how to dissect both intact and incomplete hearts to achieve the maximum educational benefit for students. The guide refers to hearts obtainable from butchers and supermarke.. more

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