Fig. 2.1 shows an incomplete structural diagram of an $\alpha$-glucose molecule. Complete Fig. 2.1 so that it shows the structure of an $\alpha$-glucose molecule.
State the kinds of covalent bond marked C and D in Fig. 2.2. C D
Many glycoproteins in the cell surface membrane take part in cell signalling. State the role in cell signalling of glycoproteins in cell surface membranes.
Compared with other protein molecules that contain a similar number of amino acids, $\beta$-casein molecules have: • a much less ordered secondary structure • relatively little tertiary structure Using the four named amino acids, proline, leucine, serine and cysteine, suggest possible explanations for these two observations. less organised secondary structure relatively little tertiary structure