Question

The following study was performed to evaluate the effectiveness of 2 antibiotics [ drug A & drug B] on bacterial growth using the disk diffusion method and the following result occurred. The disks contained the same concentration of drug A & drug B [ specifically 50uM]. The zone of inhibition that was observed was 20mm with drug A and 20 mm with drug B. Based on what you know about this test, how would you evaluate the effectiveness of these 2 different drugs? Do both drugs inhibit bacterial growth with equal effectiveness? Justify your answer. (ie: explain your answer) [ 6 marks]

Answer 1

To evaluate the effectiveness of 2 antibiotics Drug A and Drug B , it is infused in a disk which has bacterial growth and disk diffussion method is done.
both dishes had the same concentration of drug A and drug B and the zone of inhibition was 20mm on both dish A and Dish B

I think both drugs inhibit bacterial growth with equal effectiveness. And both the drugs are equally effective in inhibiting the bacterial growth because the 20mm zone was created equally in both the dishes. So both the drugs has equal effect.