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9 Cards in this Set

  • Front
  • Back

Ion channels

Integral proteins forms a pore which specific ions can pass through.

Carrier/Transporter

Integral. Transports a specific protein across the membrane by under going a change in shape e.g. amino acids

Receptor

Integral. Recognises a spefic ligand that alters the way the cell functions in some way.

Enzyme

Integral and peripheral. Catalyzes reactions inside or outside the cell depending on which side the active site faces.

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.

Cell identity maker

Glycoproteins. Distinguishes your cells from anyone else's.

Structure Of Plasma membrane

Made up of a bilayer of phospholipids, cholesterols and gylcolipids.

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.

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.