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Cell transport
Question | Answer |
---|---|
Active transport | Requires the input of energy to move molecules from a low concentration to a high concentration |
Endocytosis | The movement of relatively large quantities of material into a cell at one time. |
Exocytosis | The movement of relatively large quantities of material out of a cell at one time. |
Diffusion | The movement of molecules from a high concentration to a low concentration, without the input of energy |
Osmosis | The movement of water from a high concentration to a low concentration, across a semi-permeable membrane without the input of energy. |
Hypotonic | The concentration of solutes in the solution is lower than inside the cell. |
Hypertonic | The concentration of solutes in the solution is higher than inside the cell. |
Isotonic | The concentration of solutes inside the cell is the same as outside the cell. |
passive transport | the movement of substances across a cell membrane without the use of energy by the cell |
Concentration Gradient | the difference in the concentration of molecules across a distance. |
facilitated Duffusion | the transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins. |
Equilibrium | A balance between the concentration of molecules on each side of the cell membrane. |
Semi- Permeable | Allows some things to pass through while others do not pass through. |
Transport Protein | A large protein "stuck" in the cell membrane. It allows large molecules and particles to move into the cell. (and also out of the cell) |
Cell membrane | controls what goes in and out of the cell. |