Assuming standard is required, and technique is required, the following results were found.
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Nitrogen-fixing bacteria in root nodules of leguminous plants
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Nitrogen-fixing bacteria free-living in the soil
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Investigating anti-microbial action
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Digestion of starch: microbes
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Investigating photosynthesis using immobilised algae
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Pouring an agar plate
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Making a pour plate
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Hazards of defrosted food
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Digestion of protein: microbes
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Quantitative food test: protein content of powdered milk
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Making a streak plate
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Testing leaves for starch: the technique
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Following gene transfer by conjugation in bacteria
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Gene induction: ß-galactosidase in E. coli
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Investigating factors affecting the heart rate of Daphnia
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Measuring the Vitamin C content of foods and fruit juices
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Identifying the conditions needed for photosynthesis
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Monitoring water pollution with invertebrate indicator species
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Investigating mitosis in allium root tip squash
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A window on the past: Measuring stomatal density