Term
| Which is said to enter a cell faster: lipid soluble molecules or water soluble molecules? |
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Definition
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Term
| The name of the first membrane was the unit membrane model. What did this model describe? |
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Definition
| proposed that proteins were embedded in an outer membrane and all cells had similar membrane structures |
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Term
| How was the fluid mosaic membrane model different from the unit membrane model? |
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Definition
| the unit membrane model suggested that there was an embedded protein in the outer membrane, the fluid mosaic model suggests that there are embedded proteins throughout the membrane in an irregular pattern and this varies with different membranes |
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Term
| The plasma membrane is a ______with embedded proteins. |
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Definition
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Term
| Phospholipids have both hydrophobic and hydrophilic regions. Would nonpolar tails be hydrophobic or hydrophilic? polar tails? |
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Definition
| nonpolar tails would be hydrophobic; polar tails would be hydrophilic |
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Term
| Where are the polar and nonpolar molecules pointed in the membrane? |
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Definition
| polar are pointed outward and nonpolar are pointed inward |
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Term
| What kind of pattern to proteins form on the membrane? |
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Definition
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Term
| ______is a lipid found in animal plasma membranes. |
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Definition
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Term
| What is the purpose of cholestrol in a membrane? |
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Definition
| it stiffens and strengthens the membrane |
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Term
| _____have a similar structure to phospholipids. |
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Definition
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Term
| How do glycolipids differ from phospholipds? |
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Definition
| the hydrophilic head in glycolipids is made of sugar |
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Term
| What is the function of glycolipids in the membrane? |
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Definition
| they are protective and assist in various proteins |
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Term
| _____have an attached carbohydrate chain of sugar that projects externally. |
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Definition
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Term
| in animal cells, what is the glycolax? |
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Definition
| sugar coat of carbhodyrate chains |
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Term
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Definition
| they have slightly varied carbohydrate chains |
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Term
| The ______recognizes foreign tissues that have inappropirate carbohydrate chains. |
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Definition
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Term
| _____are the basis for A, B, and O blood groups in humans. |
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Definition
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Term
| At body temperature, the phospholipid bilayer has the consistency of _____. |
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Definition
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Term
| What causes more fluid in the bilayer? |
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Definition
| greater concentration of unsaturated fatty acid residues |
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Term
| Some proteins are held together by the ______. |
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Definition
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Term
| How many proteins are in the red blood cell plasma membrane? |
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Definition
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Term
| ____deteremine most of the mebrane's functions. |
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Definition
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Term
| What are the five types of integral proteins? |
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Definition
| channel, carrier, cell recognition, receptor, enzymatic |
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Term
| _____allow a particular molecule to cross a membrane freely. |
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Definition
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Term
| ______selectively interact with a specific molecule so it can cross the plasma membrane. |
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Definition
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Term
| ______are glycoproteins that allow the body's immune system to recgonize the difference between foreign invaders and body cells. |
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Definition
| cell recognition proteins |
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Term
| _____are shaped so a specific molecule can bind to it. |
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Definition
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Term
| _____carry out specific metabolic reactions |
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Definition
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