AQA GCSE Biology · 8461
Specification 4.1.1.6 · Paper 1
Revise: Aseptic Techniques & CulturingContamination may also introduce potentially harmful microorganisms.
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GCSE Biology · key term
The unwanted presence of microorganisms that were not intended to be in a culture.
Used by AQA, Edexcel and OCR
Specification 4.1.1.6 · Paper 1
Revise: Aseptic Techniques & CulturingContamination may also introduce potentially harmful microorganisms.
Specification 5.17B · Paper 1
The presence of unwanted microorganisms in a culture, on equipment or in the surroundings.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The introduction of unwanted microorganisms into a sample or culture.
Revise: Aseptic TechniquesAseptic technique reduces this contamination and also helps prevent cultured microorganisms spreading to people or the surroundings. This matters when a culture is being used to investigate the cause of an infection.
Explain the purpose of each technique: it reduces contamination of the culture, the surroundings or both.
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