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27 Cards in this Set
- Front
- Back
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Hydrophilic Heads |
- 2 tails (fatty acid/hydrophobic) - Head (hydrophilic) |
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Hydrophobic Tails |
Afraid of water |
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Peripheral Protein |
- Not inside - Off to side |
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Fluid Mosaic Model |
Parts of the plasma membrane that can move around |
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Mosaic |
Mix of phospholipids, proteins, carbs, etc.. |
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Inside plasma membrane |
Where is the integral protein located? |
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Selective Permeability |
- Hydrophobic and small molecules cross through phospholipids - Hydrophobic molecules cross through transport proteins |
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Passive Transport |
- Move across the plasma membrane without energy (ATP) - Use concentration gradient |
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Concentration Gradient |
- High concentration to a low concentration (crowded) - High to low concentration (space) |
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Diffusion |
Molecules spreading out until they reach equilibrium |
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Equilibrium |
Even concentration on both sides |
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Moving from high to low concentration |
- Solute (small)- O2 - Diffusion - Equilibrium |
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Moving from low to high concentration |
- Solute (huge)- protein - Osmosis |
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Osmosis |
Type of diffusion where water moves |
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Tonicity |
Ability of a cell to gain or lose water based on its environment (osmosis) |
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Hypertonic |
- More solutes in environment - Water leaves cell - Cell shrinks - :( |
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Hypotonic |
- Less solutes in environment - Water goes into cell - Cell gets bigger - Plant cell ideal - Animal cell bursts because NO cell! |
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Isotonic |
- Equal concentration on solutes in/out cell - No net water movement - Animal cell ideal - Plants wilt (die) |
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Bulk Transport |
Using a vesicle to either enter or exit the cell |
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Active Transport |
- Using energy in the form of ATP - Move things across the plasma membrane - Go against the concentration gradient |
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Electrogenic Pump |
Pumps out positive charges so cell can stay negative |
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Membrane Potential |
Inside of cell is negative compared to the outside - How you generate an action potential |
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Action Potential |
The way to send signals from brain, nerve, muscles |
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Exocytosis |
Leave the cell |
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Endocytosis |
Cell "eating" |
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Pinocytosis |
Cell "drinking" |
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Receptor Mediated Endocytosis |
Using receptors to bind what you are bringing in |
