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27 Cards in this Set
- Front
- Back
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What types of molecules are major structural components of cell membrane??? |
Phospholipids and proteins |
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Molecules in cell membrane |
Lipids, cholesterol, proteins |
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The presence of cholesterol in the plasma membrane of some animals... |
Maintains the fluidity of the cell |
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How membranes of winter wheat are fluid when cold |
Kinky unsaturated fatty acid tails |
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Why do unsaturated fatty acids keep fluid when cold??? |
Kinks keep them separated |
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Important function for glycoproteins and glycolipids of animal cells. |
Cell recognition |
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Molecules used for cell recognition |
Glycoproteins and glycolipids |
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Kind of molecules that pass through cell membrane easily. |
Small uncharged nonpolar molecules |
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Which moves through lipid bilayer easily |
Small uncharged nonpolar molecules ex. Oxygen carbon dioxide. |
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Diffusion |
Molecules move from high to low |
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Water passes quickly because |
Moves through aquaporins |
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Lots of distilled water is added to vein. What will happen??? |
Cells will explode. Hypo. |
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Celery stalks in fresh water harden. Stalks in salt solution become limp. The cells are... |
Salt solution is hypotonic. |
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Celery stalks in fresh water harden. Stalks in salt solution become limp. The cells are... |
Water is hypertonic. |
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Tonicity of plant cells |
Hypotonic |
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Tonicity of animal cells. |
Isotonic |
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Drug has to enter cytoplasm of certain cells. What factors aren't important??? |
Polarity Size |
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Membrane activity that does not require ATP. |
Passive transport |
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Structures used in active transport. |
Carrier protein pumps |
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Movement across membrane against gradient using energy |
Active transport |
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Glucose goes into cytoplasm quickly. What is being used??? |
Endocytosis |
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The main differences between facilitated diffusion and active transport. |
Active uses energy |
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Process that doesn't take material into the cell. |
Exocytosis |
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Organism with cell wall would have hard time going through. |
Endocytosis |
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Opposite of exocytosis. |
Endocytosis. |
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White blood cells engulf bacteria. |
Phagocytosis |
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Difference between pinocytosis and receptor mediated endocytosis. |
Receptors |
