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Practical skills answer explanations

Review worked answers and explanations for Practical skills. Aligned to OCR Gcse Biology A Gateway.

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a. Describe Describe two essential aseptic techniques the student must use when preparing the agar plates and inoculating them with bacteria to prevent contamination. [4 marks] b. Explain Explain how the student would measure the effectiveness of each antimicrobial treatment from the agar plate results. [3 marks] c. Suggest Suggest one safety precaution the student should take when handling the bacterial cultures after incubation and explain why it is important. [2 marks]

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