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15 Cards in this Set
- Front
- Back
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Describe diffusuon |
Movement of molecules to from an area of high concentration to low concentration |
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What can affect the rate at which diffusion occurs? |
Size of molecules Surface area Concentration gradient |
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Describe facilitated diffusion? |
This is the same as diffusion but involves proteins |
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Does facilitated diffusion require energy? |
No |
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What is osmosis? |
Movement of molecules from an area of high concentration to low concentration through water |
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What is omotic pressure>? |
The pressure exerted from the water when osmosis takes place |
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What is osmolality? |
The concentration gradient that the molecules have to pass thorugh |
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What is a solute? |
A substance dissolved i water |
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What is a solvent? |
A substance capable of dissolving a solute |
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What is a solution? |
the concentration, number of molecules within a solution |
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Active transport involves molecules moving across their own? |
Concentration gradient |
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What does active transport require that others don't?
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Energy |
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The movement of large molecules occurs via what two processes? |
Exocytosis Endocytosis |
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What is exocytosis? |
Molecules leaving the cell |
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What is endocytosis? |
Molecules entering the cell |
