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the plasma membrane is composed primarily of ___
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The tails of phospholipids are ___, ____, and _____.
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BIO ch 5
CH 5 Final
| Question | Answer |
|---|---|
| the plasma membrane is composed primarily of ___ | phospholipids |
| The tails of phospholipids are ___, ____, and _____. | nonpolar, hydrophobic, and directed inwards in the bilayer |
| the permeability of most membranes is reduced by the presence of ____ in the membrane. | cholesterol |
| particular molecules or ions freely cross the plasma membrane with the assistance from ____ ____. | channel proteins |
| Osmosis is specifically about the movement of ____ in and out of cells. | water |
| What is passive transport? | Diffusion, no energy expended |
| the term hemolysis refers to? | red blood cells that burst after being placed in a hypotonic solution |
| Facilitated transport is ___???? | molecules move from a high concentration to a low concentration |
| Insulin leaves insulin-secreting cells by ____ | exocytosis |
| According to the fluid-mosaic model, ____ are partially or wholly embedded in a fluid phospholipid bilayer | proteins |
| transplant rejections are the result of the immune systems response to foreign ___ and ____. | glycoproteins glycolipids |
| macrophages, immune system cells, engulf bacteria by ____ | phagocytosis |
| ____ ____ needs carrier proteins, requires the expenditure of energy, and the molecules move from areas of low concentration to areas of high concentration | active transport |
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nicoleinsd
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