@jodyflawson Was quite straight forward. Got to introduce agar plates and streaking to Y9s. Needed about an hour exposed to sunlight. Yeast from Southern Biological. Cheaper for lab techs to make up the cultures and agar compared with buying the kits.
Year 9 Science and been trying out a new practical! Think I’m in love 🥰
UV sensitive yeast - the cells die if exposed to UV light.
Final set of results: Zone 1-sunlight, Zone 2-hidden under foil, Zones 3&4-different brands of SPF 50+ sunscreen.
@miniPCR Thank you. We were using 40mL so will try with less.
We were also using distilled water and will now try with tap water in case that’s the issue.