AP Biologymediummcq1 pt
Which class of lipid is a major structural component of most cellular membranes?
A.Phospholipids
B.Triglycerides
C.Steroids
D.Waxes
Explanation
Core Concept
Phospholipids are amphipathic molecules that commonly self-assemble into bilayers, creating the basic permeability barrier of many cellular membranes. Membrane composition also includes proteins and other lipids, and archaeal membranes use chemically distinct lipid structures, so 'every cell membrane is built from a phospholipid bilayer' is too absolute.
Correct Answer
APhospholipids
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