Examlex
Chordate pharyngeal slits appear to have functioned first as ________.
Potassium Gates
Channels in the cell membrane that allow potassium ions to move in and out, influencing cellular activity and electrical charge.
Sodium Gates
Protein channels in cell membranes that open or close in response to signals, allowing sodium ions to pass into or out of the cell.
Membrane Potential
The voltage difference across a cell's membrane, crucial for the transmission of nerve impulses and muscle contractions.
Intracellular
Occurring within or inside a cell, affecting the cell's internal environment or processes.
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