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24 Cards in this Set
- Front
- Back
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What makes up a phospholipid |
two fatty acids and a glycerol |
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Which way do polar heads face |
outside |
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what term describes polar heads because they love water |
hydrophillic |
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What term describes non polar heads because they fear water |
hydrophobic |
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what binds the cell membrane together |
cholersteral |
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what is embedded in the membrane that allows larger molecules to get through |
protein channel |
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what type of diffusion uses a protein channel |
facillitated diffusion |
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what can pass through the membrane without facilitation |
co2 h20 02 |
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what molecules use a protein channel |
molecules that are too big |
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term that describes inability to pass through |
impermiable |
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what term describes ability to pass through |
permiable |
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what term describes some things pass through but others don't |
semi permiable |
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what three terms describe passive transport |
high to low, with gradiant, no energy |
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examples of passive transport |
diffusion, osmosis, facilitated diffusion |
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difference between osmosis and diffusion |
osmosis is just the diffusion of water |
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difference between diffusion and facilitated diffusion |
facilitated diffusion uses a helper |
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what 4 factors affect rate of diffusion |
surface area, temperature, concentration, type of molecule |
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what type of transport is opposite of passive |
active |
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3 things that describe active transport |
energy, low to high, against gradient |
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3 examples of active transport |
endocytosis, exocytosis, sodium potassium pump |
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what prefix means to bring in |
endo |
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why would a cell want to use energy for endocytosis and exocytosis |
because they need to get materials in and out of the cell |
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what happens to a cells ability to maintain homeostasis as it gets bigger |
it goes down |
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what structure represents the volume |
cytoplasm |
