ap lab 4/3/12

what causes ions to mave across the cell membrane

what do gradients therefor result in

what is the electrical potential across a membrane called

where is sodium more highly concentrated

where is potassium more highly concentrated

where is chlorine more highly concentrated

what do ions cross cell membranes through

what is the term that refers to cell having channels of a particular ion

what is the term for cells bewing permeable to certain ions but not others

what causes ions to move

in the space below decribe the movement of an ion that is diffusing down its cocentration gradient

do K+ ions diffuse into or out of a cell

what is the electrical potential across a cell membrane called

what is membrane potential measured in

does Na+ diffuse into or out of a cell

what is the membrane potential of neurons at rest called

resting membrane potential depends on what two ions

what is the value of the resting membrane potential for many neurons

what direction does K+ leak

what direction does Na+ leak

as the leaking of Na+ and K+ continues the membrane potential moves toward what value

in what direction is K+ transported to keep its gradient from running down

in what direction is Na+ transported to keep its gradient from running down

what maintains the resting membrane potential

what provides the energy for the Na + K+ pump

are Na+ and K+ pumped alon or agianst thier respective gradients