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Any Glucose?

In this investigation, from the Royal Society of Chemistry, students design a biosensor to detect glucose using two enzymes; glucose oxidase and horseradish peroxidase.

The resource is set out as teachers' notes followed by the students' page which presents the task to be investigated. A list of apparatus...

Three Parent Babies

This guide gives information, further reading and web links to help students understand the ethical issues around in vitro fertilisation (IVF) involving the use of a female egg donor, and the egg and sperm from the genetic parents - known as three parent IVF or mitochondrial replacement. The treatment is aimed at...

Investigating the hormone auxin (IAA), a plant growth regulator

This protocol allows students to investigate the effects of the hormone auxin (Indole Acetic Acid or IAA) as a plant growth regulator. The investigations give opportunities to look at auxiliary bud development, root development, and leaf abscission in Coleus. The method is suitable for independent investigations by...

Fruit juice production and enzyme recovery

Produced by Science & Plants for Schools (SAPS), in this investigation, students look at the effectiveness of enzymes used in the commercial production of fruit juices.

Fruit juice companies use enzymes to break down the cells walls within the fruits and release the liquids and the sugars which make up...

What determines the number of spines on a holly leaf?

Produced by Science & Plants for Schools (SAPS), this activity enables students to:
•    develop knowledge and understanding of structural defence mechanisms in plants
•    develop problem solving skills
•    demonstrate the processing of information and use of calculations

The...

The effect of phosphate on the enzyme phosphatase

Produced by Science & Plants for Schools (SAPS), this investigation looks at end-product inhibition of the enzyme phosphatase. 

The investigation is designed for students following a Scottish Highers course but it is equally useful for other post-16 courses in biology. 

This investigation involves...

Stomatal opening and closing in commelina communis

Produced by Science & Plants for Schools (SAPS), this investigation looks at stomatal opening and closing in Commelina communis (Asiatic dayflower). This is achieved by varying the turgor of the guard cells by bathing lower epidermal peels in solutions of different osmotic strengths. Changes in guard cell...

Investigating enzymes: microscale investigations with catalase

One of a series of resources from Science & Plants for Schools (SAPS) investigating key topics in plant biology. A simple yet accurate protocol looking at the results of the enzyme catalase. Catalase is a widespread enzyme, protecting the cell from toxic effects of hydrogen peroxide by catalysing its...

Investigating enzymes: inhibition of catechol oxidase in bananas

One of a series of resources from Science & Plants for Schools (SAPS) investigating key topics in plant biology. In this practical, student investigate how lead inhibits catechol oxidase, an enzyme which is easily extracted from a banana and which is responsible for turning fruit brown. Measuring the intensity...

Investigations into eutrophication

This brief resource provides five ideas for investigating the effects of eutrophication on aquatic plant life. Each activity is based on setting up a range of solutions with increasing amounts of minerals and following the growth of aquatic plants. The resource offers suggestions of how the mineral content could be...

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