Question

staining, and culture characteristics quiz
in this picture, what is the cell wall characteristic of the pink bacteria?
it has an external lipopolysaccharide layer around it
it is positive for a thick layer of peptidoglycan
it is positive for the presence of mycolic acid
it is negative for the presence of mycolic acid

Explanation:

This is a Gram - stained image. Pink bacteria are Gram - negative. Gram - negative bacteria have an outer membrane containing lipopolysaccharide. They have a thin layer of peptidoglycan and lack a thick peptidoglycan layer like Gram - positive bacteria. Mycolic acid is associated with acid - fast bacteria (e.g., Mycobacterium) and not with typical Gram - negative or Gram - positive categorization based on this staining.

Answer:

It has an external lipopolysaccharide layer around it