Indicate whether each of the following descriptions better applies to glycosaminoglycans (G), fibrous proteins (F), or glycoproteins (P) of the extracellular matrix in animal cells. Your answer would be a six-letter string composed of letters G, F, and P only, e.g. GFPGFP.
( ) They include laminin and fibronectin.
( ) They primarily include collagens.
( ) They include hyaluronan.
( ) They are found in proteoglycans.
( ) They occupy large volumes and form hydrated gels.
( ) They constitute the major proteins of the matrix.

Question

Indicate whether each of the following descriptions better applies to glycosaminoglycans (G), fibrous proteins (F), or glycoproteins (P) of the extracellular matrix in animal cells. Your answer would be a six-letter string composed of letters G, F, and P only, e.g. GFPGFP.
( )	They include laminin and fibronectin.
( )	They primarily include collagens.
( )	They include hyaluronan.
( )	They are found in proteoglycans.
( )	They occupy large volumes and form hydrated gels.
( )	They constitute the major proteins of the matrix.

Quizplus · Accepted Answer

Glycosaminoglycan chains, such as hyaluronan or those covalently linked to core proteins in proteoglycans, occupy large amounts of space and form hydrated gels that resist compression. Fibrous proteins, primarily collagens, constitute a significant fraction of the total protein mass in the extracellular matrix. Noncollagen glycoproteins, such as fibronectin and laminin, carry conventional N-linked oligosaccharides.

Indicate Whether Each of the Following Descriptions Better Applies to Glycosaminoglycans