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Enzyme Activity in Fruits and Vegetables

Produced by Science & Plants for Schools (SAPS), these materials give a range of suggested activities that investigate enzyme activity in ripening fruit. These include:• the changes in enzyme activity during ripening and storage• the activity of the same enzyme in different species• the loss of an enzyme substrate...
Publication date:
2000 - 2009

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Ethene: Plant Growth and Ripening

Produced by Science & Plants for Schools (SAPS), this investigation looks at the effects of ethene of fruit ripening.Ethene is a colourless gas and is produced by plants, acting as a plant growth substance. Its presence can be detected using a simple bioassay using germinating seedlings. Details of this assay are...
Publication date:
2000 - 2009

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Antifungals: Inhibition of Fungal Growth

Produced by Science & Plants for Schools (SAPS), this resource encourages students to investigate the effects of various antifungal treatments on the growth of yeast.Antifungal treatments available from pharmacists include:• Canistan• Daktarin• DiflucanA suggested method, with appropriate technical guidance, is...
Publication date:
2000 - 2009

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Inhibitory Growth Effects of Conifers

Produced by Science & Plants for Schools (SAPS), this resource looks at the compounds produced by conifers that inhibit the growth of other plant species.Conifers, such as pine trees, contain compounds which inhibit the growth of other plants. They tend not to have other species of plants growing under them and...
Publication date:
2000 - 2009

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Investigating Antimicrobials

From Science & Plants for Schools (SAPS), these materials encourage students to use disc diffusion tests to investigate antibacterial or anti-yeast properties. A wide range of products, both synthetic and natural, claim to have microbicidal properties. Students can test these claims.Experimental method and...
Publication date:
2000 - 2009

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Autolysis in Yeast

Produced by Science & Plants for Schools (SAPS), this investigation looks at the autolysis, or cell death, of yeast. This is important, as many food production processes require the living yeast to be killed.In the process of autolysis it is important to try to find at what point in the process the cells actually...
Publication date:
2000 - 2009

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Doubling and Dabbling in Duckweed

Produced by Science & Plants for Schools (SAPS), the investigations suggested in this resource use duckweeds. These seem to be simple plants - small, green, and with no flowers. However, this simplicity makes them ideal experimental organisms for investigations into a variety of environmental topics such as the...
Publication date:
2000 - 2009

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Respiration Changes During Fruit Ripening and Storage

This practical activity, from Science & Plants for Schools (SAPS), investigates the process of respiration. Suggestions are given for looking at different fruits or vegetables and measuring the respiratory rate during the ripening process.Possible investigations include:• Does the rate of respiration vary during...
Publication date:
2000 - 2009

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Sweet or Sour?

Produced by Science & Plants for Schools (SAPS), this investigation looks at the taste of different fruits and vegetables. Domesticated fruits and vegetables have all been selectively bred so that they contain a particularly attractive taste for humans.In a ripe fruit, flavours are produced by a combination of...
Publication date:
2000 - 2009

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Gel Electrophoresis of DNA

Produced by Science & Plants for Schools (SAPS), this activity enables students to look at the gel electrophoresis of DNA treated with restriction enzymes. It will help to develop a knowledge and understanding of the cutting of DNA with restriction enzymes.In the experiment, a batch of DNA is digested by two...
Publication date:
2000 - 2009

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