3. E. Coli and S. Aureus were chosen to represent gram negative and gram positiv

Question

3. E. Coli and S. Aureus were chosen to represent gram negative and gram positive bacteria. Respectively. For a given anabiotic, is there a difference between the susceptibility between the gram-positive and the gram-negative bacteria? If so, what difference(s) do you see? 3. E. Coli and S. Aureus were chosen to represent gram negative and gram positive bacteria. Respectively. For a given anabiotic, is there a difference between the susceptibility between the gram-positive and the gram-negative bacteria? If so, what difference(s) do you see? 3. E. Coli and S. Aureus were chosen to represent gram negative and gram positive bacteria. Respectively. For a given anabiotic, is there a difference between the susceptibility between the gram-positive and the gram-negative bacteria? If so, what difference(s) do you see?

Explanation / Answer

Yes for an antibiotic there is difference between the susceptibilitybetween gram +ve and gram -ve

Because there is difference in the cell wall of gram positive and negative bacteria i.e.,gram positive bacterial cell wall is mainly composed of peptidoglycans while gram negative lacking it. So the antibiotic acting on peptidoglycan of the cell wall will be effective against gram positive bacteria while gram negative will remain ineffective.

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