Which description of a ganglioside is MOST accurate?
A) the dominant surface feature of gram-negative bacteria.
B) the dominant surface feature of gram-positive bacteria.
C) an oligosaccharide chain attached to a newly synthesized protein in the ER
D) a membrane lipid in which the polar head group is a complex oligosaccharide containing at least one sialic acid
E) a membrane lipid in which the oligosaccharide is attached to a mucin

Question

Quizplus · Accepted Answer

Gangliosides are a type of membrane lipid that have a polar head group consisting of a complex oligosaccharide with at least one sialic acid attached. This makes choice D the most accurate description. Gangliosides are not surface features of bacteria and are not attached to proteins in the ER or mucins.

Which Description of a Ganglioside Is MOST Accurate