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9 Cards in this Set
- Front
- Back
Ion channels |
Integral proteins forms a pore which specific ions can pass through. |
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Carrier/Transporter |
Integral. Transports a specific protein across the membrane by under going a change in shape e.g. amino acids |
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Receptor |
Integral. Recognises a spefic ligand that alters the way the cell functions in some way. |
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Enzyme |
Integral and peripheral. Catalyzes reactions inside or outside the cell depending on which side the active site faces. |
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Linker |
Integral and peripheral. Anchors filaments inside and outside the plasma membrane, providing structural stability and shape for the cell. Can also link two cells together. |
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Cell identity maker |
Glycoproteins. Distinguishes your cells from anyone else's. |
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Structure Of Plasma membrane |
Made up of a bilayer of phospholipids, cholesterols and gylcolipids. |
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Phospholipids |
Are made up of both polar and non polar parts (amphipathic). The head is polar and hydrophillic and faces outwards towards the extra cellular fluid and the cytosol. |
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Cholesterols |
Weakly amphipathic. OH group forms hydrogen bonds with The polar heads of the phospholipids. They are interspersed amoung the other lipids in both layers of the membrane. |