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GCSE Combined Science · key term
Free from living microorganisms.
Used by OCR
Specification B5 · Biology, Chemistry, Physics, Combined Science
Revise: Microbiological MethodsUse a teacher-provided bacterial culture, sterile agar plates and sterile equipment, rather than collecting unknown microorganisms.
Explain the purpose of each precaution: sterile equipment and brief lid opening reduce contamination; low incubation temperatures reduce the risk of growing pathogens.
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