Biology · Microbiology
Grow bacteria from everyday surfaces
Swab phones, door handles and washed hands onto agar and compare the colonies that grow.
- Intermediate
- 2–7 days
- 250–500
606 projects · 13 streams · every class
Biology projects 15
Biology projects on plants, microbes, the human body, genetics and ecosystems, with clear observation tables and no harm to animals.
15 Biology projects
Biology + Environmental Science
Map the biodiversity of a school ground
Survey plants and small animals with quadrats and calculate a biodiversity index for different areas.
- Easy
- 2–7 days
- Free
Biology · Botany
Compare the stomata of different leaves
Take nail-polish peels of leaves and count stomata on upper and lower surfaces.
- Easy
- 1–3 hours
- Under 250
Biology · Cell Biology
Observe osmosis in potato strips
Soak potato strips in salt solutions and find the concentration at which they neither gain nor lose mass.
- Easy
- 1 day
- Under 250
Biology + Sports and Exercise Science
Measure how exercise changes pulse rate and recovery
Record pulse before, during and after exercise for several volunteers and compare recovery times.
- Easy
- 1 day
- Free
Biology · Microbiology
Investigate which mouthwash or toothpaste limits plaque bacteria
Compare how well mouthwashes inhibit bacterial growth on agar using the disc method.
- Advanced
- 1–2 weeks
- 250–500
Biology · Botany
Investigate transpiration with a simple potometer
Build a potometer from tubing and measure how wind, light and humidity change water uptake.
- Intermediate
- 1 day
- Under 250
Biology · Microbiology
Compare antibacterial effects of natural substances
Test garlic, neem, turmeric and honey against harmless bacteria using paper discs on agar.
- Advanced
- 1–2 weeks
- 250–500
Biology · Evolution
Model natural selection with coloured beads
Play predator on beads scattered on patterned cloth and watch the population shift over generations.
- Easy
- 1–3 hours
- Under 250
Biology + Psychology
Test whether music or silence helps short-term memory
Give volunteers word lists to memorise in silence, with instrumental music and with songs, and compare recall.
- Easy
- 2–7 days
- Free
Biology · Biotechnology
Culture yeast and measure fermentation
Use balloons on bottles to measure how sugar type and temperature change the gas yeast produces.
- Easy
- 1–3 hours
- Under 250
Biology · Molecular Biology
Investigate the effect of temperature on enzyme activity
Measure how fast potato catalase breaks down hydrogen peroxide at different temperatures.
- Intermediate
- 1 day
- Under 250
Biology + Environmental Science
Test how fertiliser runoff affects algae growth
Add different amounts of fertiliser to jars of pond water and track how green they turn.
- Intermediate
- 1–2 weeks
- Under 250
Biology · Genetics
Analyse inheritance of traits in your class
Survey classmates for visible traits and check whether the textbook "dominant" traits are really the most common.
- Easy
- 2–7 days
- Free
Biology + Nutrition and Food
Test for starch, sugar, protein and fat in foods
Use four standard tests to find which nutrients are present in ten common foods.
- Easy
- 1–3 hours
- Under 250
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