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Cells and Microorganisms
Quick questions on Aseptic technique and sterilisation: O-Level Cells and Microorganisms
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is aseptic technique?Show answer
Aseptic technique is the set of careful working practices that keep contaminants out. The key steps are:
What is methods of sterilisation?Show answer
Sterilisation kills or removes all microorganisms from equipment and media before use:
What is q1?Show answer
State two ways a culture could become contaminated. [2 marks]
What is q2?Show answer
Explain why an inoculating loop is flamed before and after transferring bacteria. [2 marks]
What is q3?Show answer
Name the method used to sterilise nutrient media and glassware, and state how it works. [2 marks]
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