The primary structural protein of basement membranes is
A)keratin.
B)collagen
C)melanin.
D)myosin.

Question

Quizplus · Accepted Answer

Basement membranes are thin, specialized extracellular matrices that underlie epithelial and endothelial cell layers. Collagen, specifically type IV collagen, is the primary structural protein of basement membranes, providing support and stability to surrounding cells. Keratin is a type of intermediate filament found primarily in epithelial cells, melanin is a pigment found in skin and hair, and myosin is a motor protein involved in muscle contraction.

The Primary Structural Protein of Basement Membranes Is