Agram-negative cell wall consists
a) cholesterol and peptidoglycan
b) peptidoglycan and cellulose
c) a thin layer of peptidoglycan surrounded by a capsule
d) a thin layer of peptidoglycan surrounded by an outer membrane containing lipopolysaccharides
e) a thick layer of peptidoglycan surrounded by an outer membrane containing lipopolysaccharides

The correct answer is D. A gram-negative cell wall consists of a thin layer of peptidoglycan surrounded by an outer membrane containing lipopolysaccharides.

Explanation:

Gram-negative bacteria are bacteria that do not retain the gentian violet dye during the Gram staining protocol.

During the Gram staining process, a contrast dye, usually safranin, is added after gentian violet, causing the Gram negative bacteria to stain pink or red. The contrast dye thus allows the visualization of Gram-negative bacteria which, because they have a thinner layer of peptidoglycans, cannot retain the gentian violet dye.

Its main feature is an endotoxin called lipopolysaccharide that causes pathogenicity and is responsible for its virulence.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

yes? sounds right, but you didn’t ask a question.