Cell Membranes (Mindmap)
- Created by: Zachary Langhorne
- Created on: 05-12-13 10:30
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- Cell Membranes
- Phospholipids
- Can form bilayers
- This forms the basis of the membrane.
- They have a hydrophilic head and a hydrophobic tail.
- They have their hydrophilic heads facing outside the membrane
- Can form bilayers
- This forms the basis of the membrane.
- Hydrophobic tail point towards the center of the membrane.
- Can form bilayers
- On the other layer, they have their hydrophilic heads facing inside the membrane; in to the cell.
- Hydrophobic tail point towards the center of the membrane.
- They have their hydrophilic heads facing outside the membrane
- Are lipid soluble, but not water soluble; creating the need for transport proteins.
- Phospholipids are mad up of a glycerol molecule, 2 fatty acid tails and a phosphate group.
- The phosphate group in the molecule makes the phospholipid polar.
- Can form bilayers
- Proteins
- In the phospholipid bilayer there are proteins.
- Types of protein
- Extrinsic proteins occur on the surface of the bilayer
- Extrinsic proteins are used for structure.
- Intrinsic proteins extend across both layers.
- Intrinsic proteins are generally used for transportation of non-lipid soluble substances.
- Are lipid soluble, but not water soluble; creating the need for transport proteins.
- Intrinsic proteins are generally used for transportation of non-lipid soluble substances.
- Extrinsic proteins occur on the surface of the bilayer
- Types of protein
- In the phospholipid bilayer there are proteins.
- Fluid Mosaic
- This is the name of the model given to the cell membrane.
- Its said to be fluid as the phospholipids are able to move relative to each other.
- The mosaic part derives from the way in which proteins in the layer vary in shape, size and pattern,
- Phospholipids
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