Microbiologists use the Gram stain to aid in the identification of bacteria.What is the major difference between Gram-positive and Gram-negative bacteria?
A)structure of the lipids in the plasma membrane
B)presence or absence of muramic acid in the cell wall
C)presence or absence of peptidoglycan in the cell wall
D)presence or absence of outer plasma membrane

Question

Quizplus · Accepted Answer

Gram-positive bacteria have a thick peptidoglycan layer and no outer membrane, while Gram-negative bacteria have a thin peptidoglycan layer and an outer membrane.

Microbiologists Use the Gram Stain to Aid in the Identification