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IB Bio - 1.4 Membrane transport
Key terms for IB Biology
Terms in this set (15)
The transport of molecules across a cell membrane by diffusion.
A process that moves chemicals across a cell membrane against a concentration gradient, using energy (ATP).
The process by which molecules of gas or liquid move from an area of high concentration to an area of lower concentration.
Movement of water across a partially permiable membrane from dilute solution to a more concentrated one (without energy)
Movement of specific molecules across cell membranes through protein channels
Membrane-bound compartments in eukaryotic cells.
Cellular uptake of biological molecules via the formation of vesicles from the plasma membrane surrounding the molecule.
A process in which a vesicle inside a cell fuses with the plasma membrane releasing its contents to the external environment.
A carrier protein in membranes that uses ATP to do active transport of sodium ions out of a cell and potassium ions into the cell.
A carrier protein in membranes which allows potassium to move out of a cell by facillitated diffusion.
A measure of the concentration of solute particles (which cause osmosis) in a given volume of fluid.
A solution whose solute concentration is lower than the solute concentration of another solution
A solution whose solute concentration is higher than the solute concentration of another solution
A process in which a machine uses osmosis and diffusion to filter urea salts and water from blood, in place of the kidneys.
The difference in molecular concentration (the difference in concentrations) that allows diffusion to occur.
THIS SET IS OFTEN IN FOLDERS WITH...
IB Bio 1.2 Ultrastructure of cells
IB Bio - 1.3 Membrane structure
IB Bio - 1.1 Introduction to cells
IB Bio - 1.5 The Origin of cells
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