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Unformatted text preview: 1. The table below refers to components of the cell surface membrane (plasma membrane) and to their roles in transporting substances across the membrane. Complete the table by inserting an appropriate word or words in the empty boxes. Component Phospholipid Carbohydrate side chain Protein Fatty acids, glycerol and phosphate monosaccharide/ named e.g. of a monosaccharide/ ref. to pentose/hexose; ester; glycosidic; Peptide Role in transport Chemical bond between subunits Subunits Ref. to vesicle formation/cytosis/ chylomicrons/ref.to diffusion; Receptor Ref. to channels/pores allowing passage/ facilitated diffusion/ receptor/enzyme/ carrier/active transport; amino acids; [Total 6 marks] 2. Write an essay on the following topic. The structure and functions of cell surface membranes (Bio, Hbio) structure and function of cell surface membranes: Introduction could include: outline of fluid mosaic model - communication with external medium, barrier - controls exchange of material - fluid mosaic model:...
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- Winter '08
- Membranes, cell surface membrane, Mr Beritsis, cell surface membranes