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Investigations in post-16 biology
These reliable practicals from SAPs allow students to practice a range of skills, such as microscopy skills, serial dilutions, plotting and using standard curves and developing mathematical skills. These investigations were designed for students following a Scottish Highers course but they are equally useful for other post-16 courses in biology. Some could even be adapted for secondary students of a younger age.
The investigations include:
- Investigating the hormone auxin (IAA), a plant growth regulator
- Fruit juice production and enzyme recovery
- What determines the number of spines on a holly leaf?
- The effect of phosphate on the enzyme phosphatase
- Stomatal opening and closing in commelina communis
- The response of leaf discs to green light
- The effects of IAA on root growth
- Competitive and non-competitive enzyme inhibition
- Estimating the glucose concentration of a solution
- The effects of mineral concentrations on plant growth
- Investigating potato cyst nematodes
- Examining mycorrhizae
- Protoplast isolation
- Investigation enzymes: microscale investigations with catalase
- Investigating enzymes: inhibition of catechol oxidase in bananas
- Investigating enzymes: phosphatase enzymes in plants
- Investigations into eutrophication
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Estimating the glucose concentration of a solution
Produced by Science & Plants for Schools (SAPS), in this investigation, students look at the concentration of glucose in isotonic sports drinks. This enables students to see if the drinks are, in fact, isotonic with the blood.
In this investigation, students first produce a standard curve by testing...
The effects of mineral concentrations on plant growth
Produced by Science & Plants for Schools (SAPS), this activity enables students to investigate the effects of different concentrations of nitrates, phosphates and potassium on the growth of radish seedlings.
After sowing, the radish seedlings are kept well watered, in a warm temperature under constant...
Investigating potato cyst nematodes
From Science & Plants for Schools (SAPS), this practical activity was developed for Scottish Highers specifications, but the protocol can equally well be used for other specifications.
Students look at potato cyst nematodes, a serious pest of food crops. This is a good example of parasitism to study as...
Examining mycorrhizae
From Science & Plants for Schools (SAPS), this practical activity was developed for Scottish Highers specifications, but the protocol can equally well be used for other specifications.
Students prepare and stain roots, and then examine them to establish the frequency of mycorrhizae.
The...