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Bioethics and Biosafety
Quick questions on Biosafety and laboratory hazards: O-Level Bioethics and Biosafety
7short 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 are the main hazards?Show answer
A biotechnology laboratory has several kinds of hazard:
What are biosafety levels?Show answer
Laboratories are classified into biosafety levels according to how dangerous the microorganisms they handle are. Higher levels require stricter containment, such as sealed cabinets and controlled airflow. School and basic laboratories work only with low-risk, harmless microorganisms at the lowest level.
What are safe working practices?Show answer
Key biosafety measures protect the worker and others:
What is safe disposal of waste?Show answer
Biological waste (used cultures, plates) contains live microorganisms. If thrown away untreated, these could escape or infect people. So the waste is sterilised first, for example by autoclaving with steam under pressure, which kills the microorganisms and their spores, before it is disposed of.
What is q1?Show answer
State two biosafety measures that protect a worker handling microorganisms. [2 marks]
What is q2?Show answer
Explain why biological waste is sterilised before disposal. [2 marks]
What is q3?Show answer
Name a method used to sterilise contaminated laboratory waste. [1 mark]
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