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14 Cards in this Set
- Front
- Back
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Define fluid |
The phospholipids, glycoproteins, glycolipids and proteins can move around within the layers and even between them |
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Defone mosaic |
Due to the proteins, glycoproteins and glycolipids embedded throughout the phospholipids make it look like a mosaic |
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Name the model that describes the structure of the plasma membrane |
The Fluid Mosaic Model |
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Describe how phospholipids form a bilayer in the plasma membrane |
The hydrophilic 'heads' face outwards, towards the water, and the hydrophobic 'tails' face inwards, away from water, forming a bilayer |
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Give a fact about extrinsic proteins |
They can also act as cell receptors and enzynes |
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Give two functions of channel proteins |
• Spans the bilayer • Forms a channel to allow small, charged molecules to pass through the bilayer |
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What is a receptor? |
Another type of protein found within the cell membrane |
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Give a fact about receptors |
Their binding site is specific and complementary to the substance they respond to |
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What makes up a glycoprotein? |
A carbohydrate attached to a protein |
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What makes up a glycolipid? |
A carbohydrate attached to a phospholipid |
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What is the purpose of the carbohydrate in glycoproteins and glycolipids? |
It acts as a recognition site on the receptor |
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Why are antigens known as 'non-self'? |
They are proteins that your body doesn't make |
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Where are antigens on the phospholipid bilayer? |
They protrude from the membrane |
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Can cholesterol be found in the plasma membrane? |
Yes |
