Microbiology 9th Edition by Laura Black, Jacquelyn Black

تمرين 22

Which of the following statement about the bacterial cell wall is FALSE?
(a) Gram-positive cells have more peptidoglycan in their cell walls than Gram-negative cells.
(b) Gram-negative cells have a membrane both inside and outside their cell walls.
(c) Peptidoglycan consists of long polysaccharide chains cross-linked with amino acids.
(d) The cell wall establishes a bacterium's shape as a coccus, bacillus, or spirillum.
(e) The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids.