(a)[3]
Nystose is one example of an oligosaccharide. Its structure is shown in Fig. 6.1. State three structural differences between nystose and glycogen, apart from the number of monomers in the molecules.
(b)[4]
Cells use oligosaccharides to make glycoproteins, which are moved to cell surface membranes. Describe the functions of the rough endoplasmic reticulum and the Golgi body in the synthesis of glycoproteins.
(c)[1]
State one function of glycoproteins in the cell surface membrane.