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BIOLOGICAL MEMEBRANES 1) The significance of COMPARTMENTALISATION? Compartmentalisation is separating the cells precious contents from the external environment, as life depends on the organisation of the proteins, nucleic acids, carbohydrates etc. it therefore protects the contents and splits the cell into different compartments and thereby separating biochemical processes. 2) Why does the membrane need to be like fluid? So that they can move more easily and also so that materials can pass through easily. If it was solid the materials could not diffuse through it. It's made up of bilayer of phospholipids, with hydrophilic ends exposed at the two membranes and the hydrophobic facing inwards. Makes it both elastic and stable. 3) Main parts of a membrane Bilayer of phospholipids. Hydrophilic facing the membrane while hydrophobic facing interior. Proteins inserted like 'icebergs', largely within the lipid layer (intrinsic) normally there is one end of the protein sticking into the membrane and the other end sticking...

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