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13 cards from this deck
Bacteria and yeast
A single-celled fungus
Alcohol (ethanol) and carbon dioxide
Absence of disease-causing organisms (pathogens)
Complete absence of all microorganisms
Yeast growth - more yeast cells make solution cloudier
Light absorbance
More turbid solution and greater number of yeast cells
pH 4 (acidic), pH 7 (neutral), pH 10 (alkaline)
Flame the neck of all flasks before and after using them
Repeat investigation without adding any yeast
0°C, 40°C and 60°C
Antibiotics, vaccines, enzymes, hormones, anti-cancer drugs
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