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14 Cards in this Set
- Front
- Back
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2 types of Passive Transport? |
Diffusion Facilitated Diffusion |
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What is Passive Transport? |
Requires no energy and moves down the concentration gradient (high to low) |
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What is Diffusion? |
Particles move across the plasma membrane from high to low concentration. continues until they make equilibrium. |
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What is Facilitated Diffusion? |
Particles move down their concentration gradient from high to low concentration. Particles are charged, and cannot cross the fatty cell membrane (use protein channels) |
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What is Osmosis? |
the flow of water through protein channels from a less concentrated to more concentrated solution. The water dilutes the more concentrated solution. |
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Types of Osmosis? |
HYPERTONIC HYPOTONIC ISOTONIC |
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What is Hypotonic Osmosis? |
The concentration of water molecules is greater outside of cell. Water moves into cell |
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What is Hypertonic Osmosis? |
The concentration of molecules is greater (with salt) outside of cell, molecules leave cell |
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What is Isotonic Osmosis? |
Same H2O concentration inside and outside of cell. |
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Types of Active Transport? |
Endocytosis Exocytosis |
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What is Endocytosis? |
the cell membrane pinches around the molecule it wants to bring into the cell, creating a vesicle to transport the contents throughout cell. Uses energy |
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What is Exocytosis? |
the Golgi complex packages larger molecules into vesicles, which will then merge with the cell membrane to release it's contents out of cell. |
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What is Plasma Membrane? |
Called a phospholipid Bilayer, has two layers made of phospholipids. Has proteins to let stuff through. |
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What is a stem cell? |
A cell that can become a cell for any part of you. (ie. can become blood cell, bone cell, brain cell, hair cell, or intestinal cell.) |
