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21 terms

Cell Membrane and Transport Vocab

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Selectively Permeable
To allow only certain things through
Solution
A mixture made of very small particles that are very well mixed
Solute
The thing being dissolved
Cytosol
The liquid part of the cytoplasm
Equilibrium
Equal concentration through the entire solution
Homeostasis
A balance that works for the cell or organism
Passive Transport
The movement of an object into and out of the cell that does not require the cell to use energy; uses the natural tendency of molecules to move away from each other
Diffusion
The movement of particles from an area of high concentration to an area of low concentration
Osmosis
The movement of water molecules from an area of high concentration to an area of low concentration through a membrane
Facilitated Diffusion
Transport proteins allow molecules to diffuse across a membrane and does not use energy
Isotonic
Solution with the same concentration of solute and water than on the other side of the membrane
Hypertonic
The solution with more solute and less water than the solution on the other side of the membrane
Plasmolysis
The shriveling of cells due to being placed in a hypertonic solution
Hypotonic
A solution with less solute and more water than the solution on the other side of the membrane
Lysis
The bursing of animal cells due to being placed in a hypotonic solution
Turgor Pressure
Pressure exerted on the cell walls of a plant cell by the water stored in the central vacuole; goes up in a hypotonic solution
Concentration
How much solute is in the solution
Lipids
Structure and transport
Proteins
Transport and communication
Carbohydrates
Nametags
Concentration Gradient
In the same solution, there is a difference in concentration