TLS Online TPP Program

#Question id: 1287


Biological roles of proteoglycans and hyaluronan include all of the following, except:

#Unit 4. Cell Communication and Cell Signaling
  1. maintenance of porosity for the diffusion of small molecules between cells and tissues.

  2. presentation of growth factors to cells.

  3. resistance to compression.

  4. storage sites for extracellular energy reserves.