Experiments with enzymes
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- What is meant by denaturation?
- How much faster is a catalysed reaction?
- Does an enzyme bond with the substrate on which it operates?
- What is meant by a control experiment?
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Fungi: mushrooms
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- What are saprophytes
- Are fungi plants?
- What is the mycelium of a fungus?
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Biofuels — alternative energy
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- Why are biofuels being manufactured?
- How can the use of biofuels reduce carbon dioxide emissions?
- Do biofuels have any disadvantages?
- Apart from biodiesel what other substance is widely used as a motor fuel?
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Science and road safety
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- How does braking distance vary with speed?
- How does inflation of tyres affect car safety?
- How does the width of a tyre affect braking?
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What causes allergies?
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- What are histamines and what is their function?
- What are allergens?
- What causes hay fever?
- What is the role of mast cells?
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Rust and rust prevention
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- What is steel?
- The formation of rust can be inhibited by using sacrificial anodes. What does this mean?
- What other methods can be used to inhibit rusting of steel ships.
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Labelling and safe use of chemicals
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- Does the new labelling system apply to all chemicals?
- What is the difference between a risk and a hazard?
- What is the purpose of a safety data sheet?
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Biosolids
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- To what extent should bacteria be removed from biosolids?
- Is there a natural way to remove phosphates from biosolids?
- How can eutrophication be reversed?
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Magnetism and magnetic surveys
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- What is meant by magnetic flux density?
- What are neodymium magnets?
- Is the Earth's magnetic field fixed?
- What is a geomagnetic reversal?
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Tissue culture and its applications
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- Can all tissues be cultured?
- What are allografts?
- What are autologous cells?
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Climate change and the enhanced greenhouse effect
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- What is thermal radiation?
- How does atmospheric water vapour influence climate?
- What are 'climate models'?
- What is meant by positive feedback?
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Probiotics - taking the strain
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- Do our gut bacteria make beneficial vitamins?
- How can probiotic bacteria protect us against pathogens?
- Do probiotic bacteria improve digestion?
- Why are most probiotics found as dairy foods?
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The Science of Electricity Generation
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- What is the law of electromagnetic induction?
- What is the advantage in using AC rather than DC for electricity distribution?
- How efficient is a combined-cycle generator?
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What makes our food safe
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- How is traceability implemented?
- Is untreated food necessarily safe?
- How can food become unfit for consumption?
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Towards a quieter city
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- What is white noise?
- How are sound intensity, power and pressure related?
- How is city noise mapped?
- What is the difference between sound and noise?
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Cement Production
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- What is Portland cement?
- What is the composition of cement?
- What is the difference between mortar and concrete?
- What happens as concrete sets?
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