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15 Cards in this Set
- Front
- Back
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What is the main difference between passive and active transport? |
Passive- no energy Active- energy |
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Describe diffusion |
Particles moving from a high to low concentrations |
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Describe facilitated diffusion |
High to low concentration |
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Describe osmosis. What two things HAVE to be true for osmosis to occur? |
Movement of water particles from a high to low concentration. Semipermeable membrane, cell membrane, water moving |
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Describe endocytosis |
Bringing in food / active transport |
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Describe exocytosis |
Bringing food out |
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Describe the sodium potassium pump. |
3 sodium out 2 potassium in |
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What is the difference between pinocytosis an phagocytosis? |
Pino- liquid Phago- good |
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What part of the cell membrane pinches off, what is this structure called? |
Vesicles |
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Why is the cell membrane called "selectively permeable" and a "fluid mosaic"? |
Allows certain things in and out |
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What does it mean to " flow down the concentration gradient " vs. " against the gradient"? |
High to low - down Low to high - against |
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Why is cholesterol important in the cell membrane? |
Keeps it from freezing |
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Describe 3 main types of proteins found in the cell membrane and what do they do? |
Perifial- only on outside Transport- |
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Hypertonic solution |
High solvent Low solute |
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Hypotonic |
Low solvent High solute |
