Cell membrane 3D model: the fluid mosaic model
Tap each part of the membrane to pick it out and read what it does: the phospholipid bilayer, channel and carrier proteins, glycoproteins and cholesterol.
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Questions students ask
Why is it called the fluid mosaic model?
Fluid because the phospholipids and proteins move about freely within the layer; mosaic because proteins of different kinds are scattered through it like tiles.
What does cholesterol do in the membrane?
It sits between the fatty-acid tails and regulates fluidity, keeping the membrane from becoming too runny when warm or too rigid when cold.
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