00:01
Hello students, in this question we need to analyze the results of disc diffusion test and answer the following question.
00:09
The first one is which antibiotic showed the highest efficiency against the tested bacteria? the second one is which antibiotic would be the recommended choice for treating the disease caused by the bacterium? and the third one is can we determine if antibiotic a was bactericidal or bacteriostatic and we need to explain how we arrived at the conclusion.
00:38
The antibiotic with a zone of inhibition of 15 millimeter was most effective against the bacteria that is being tested.
00:47
Next question, based on the data provided the antibiotic with a zone of inhibition of 15 millimeter would be the most effective and therefore it is recommended for treating a disease caused by this bacterium.
01:01
Moving on to the third part of the question, it is not possible to determine from this data whether antibiotic a was bactericidal or bacteriostatic.
01:13
Bactericidal refers to the action of antibiotic which kills the bacteria while bacteriostatic refers to either antibiotics slowing down the growth or completely stopping the growth but it does not kill the entire bacterial population.
01:33
The disc diffusion test only measures the effectiveness of an antibiotic in preventing the growth of bacterium but it does not provide information on mechanisms of action to determine whether a back whether an antibiotic is bactericidal or bacteriostatic.
01:50
Further tests have to be performed...