Petrus asks you what the Gram-negative result means and you explain that the bacteria causing his grandmother's UTI
A) have a thin cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
B) have a thick cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
C) have no cell wall but they have a thick outer membrane which makes the cells less sensitive to the antibiotic penicillin.
D) have a thin cell wall and an inner cell membrane which makes the cells less sensitive to penicillin.
E) have no cell wall which makes the cells more sensitive to the antibiotic penicillin.

Question

Quizplus · Accepted Answer

Gram-negative bacteria have a thin cell wall and an outer membrane that makes them less sensitive to the antibiotic penicillin. This is because penicillin targets the cell wall, and the extra outer membrane in Gram-negative bacteria makes it harder for the antibiotic to penetrate and reach its target.

Petrus Asks You What the Gram-Negative Result Means and You