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To study the effect of an antibiotic on three strains of bacteria (A, B, C), agar plates were set up as shown - HSC - SSCE Biology - Question 27 - 2004 - Paper 1
Question 27
To study the effect of an antibiotic on three strains of bacteria (A, B, C), agar plates were set up as shown. Agar plate 1 Agar plate 2 Agar plate 3 Sur... show full transcript
Worked Solution & Example Answer:To study the effect of an antibiotic on three strains of bacteria (A, B, C), agar plates were set up as shown - HSC - SSCE Biology - Question 27 - 2004 - Paper 1
Step 1
Write a conclusion to the experiment.
Answer
Based on the results from the agar plates, it can be concluded that the antibiotic was effective against bacterium A and bacterium B, as indicated by the clear zones around the antibiotic discs on their respective plates. However, bacterium C showed no inhibition of growth, suggesting resistance to the antibiotic.
Step 2
Identify ONE safe work practice used to minimise risks associated with handling or identifying microbes.
Answer
One safe work practice to minimize risks when handling microbes is to always wear appropriate personal protective equipment (PPE) such as gloves and lab coats. This helps to prevent contamination and exposure to potentially harmful microorganisms.