What is the function of glycoproteins found on the Extracellular Matrix (ECM) of animal cells? A.
Transport of large polar molecules through the membrane

B.
support

C.
receptors specialized in cell to cell recognition

D.
Enzymatic reactions

C

Explanation:

There are many different unique kinds, so they are ideal ID-tag-like molecules.

this protocol provides a detailed procedure for co-immunoprecipitation (co-ip) to identify protein–protein interactions.

a compound light microscope is used to magnify objects in steps.  

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