Examlex
What functions do voluntary associations serve?
Concentration Differences
Variations in the amount of a particular substance within a given volume, leading to a gradient that can cause diffusion.
Sodium-Potassium Pump
A membrane-bound ATPase enzyme that pumps sodium out of cells while moving potassium into cells, crucial for maintaining cellular ion balance and membrane potential.
Plasma Membrane
A bi-layer of lipids and proteins that surrounds a cell, controlling the passage of substances in and out of the cell.
Membrane Potential
The electrical potential difference across a cell's plasma membrane, vital for the conduction of nerve impulses, muscle contraction, and transport processes.
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