The glycocalyx: binds solutes and transports them across the plasma membrane. is bound to the inner or outer surface of the plasma membrane and is easily separated from it. contains pores or channels through which water and solutes may pass. binds to extracellular structures and is important in cell recognition and lubrication of the cell surface.

Binds to extracellular structures and is important in cell recognition and lubrication of the cell surface.

Explanation:

They form a peri-cellular matrix around the cell and is observed as a fuzzy cell coat under a microscope.  Glycocalyx molecules are mostly made up of carbohydrates bonded with lipids and proteins. They are significant  in cell adhesion especially in tissues and for protection in prokaryotes. These molecules are also important in cell-to-cell communication and recognition.  

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b. the carbon cycle ensures living things have a source of hydrogen