The Resting Membrane Potential Clicker Questions Prepared by Nora Hebert Red Rocks Community College

Concentration gradients exist across the plasma membrane Concentration gradients exist across the plasma membrane. Specifically, there are ________. a. more sodium ions inside and more potassium ions outside the plasma membrane b. more potassium ions inside and more sodium ions outside the plasma membrane c. more sodium and potassium ions inside the plasma membrane than outside d. equal concentrations of sodium and potassium ions outside the plasma membrane Answer: b. more potassium ions inside and more sodium ions outside the plasma membrane

Concentration gradients exist across the plasma membrane Concentration gradients exist across the plasma membrane. Specifically, there are ________. a. more sodium ions inside and more potassium ions outside the plasma membrane b. more potassium ions inside and more sodium ions outside the plasma membrane c. more sodium and potassium ions inside the plasma membrane than outside d. equal concentrations of sodium and potassium ions outside the plasma membrane

The value of the resting membrane potential is ________. a. –70 mV b. +30 mV c. –90 mV d. –55 mV Answer: a. –70 mV

The value of the resting membrane potential is ________. a. –70 mV b. +30 mV c. –90 mV d. –55 mV

The plasma membrane is more permeable to ________. a. sodium ions b. potassium ions Answer: b. potassium ions

The plasma membrane is more permeable to ________. a. sodium ions b. potassium ions

The resting membrane potential depends on each item below, EXCEPT: a. the concentration gradient for sodium ions. b. the greater permeability of the plasma membrane to potassium ions. c. the greater permeability of the membrane to anions rather than cations. d. the greater number of potassium leak channels. Answer: c. the greater permeability of the membrane to anions rather than cations

The resting membrane potential depends on each item below, EXCEPT: a. the concentration gradient for sodium ions. b. the greater permeability of the plasma membrane to potassium ions. c. the greater permeability of the membrane to anions rather than cations. d. the greater number of potassium leak channels.

The Na+/K+ pump transports ________. a. Na+ into and K+ out of the cell b. Na+ out of and K+ into the cell c. equal numbers of Na+ out of and K+ into the cell d. more K+ into than Na+ out of the cell Answer: b. Na+ out of and K+ into the cell

The Na+/K+ pump transports ________. a. Na+ into and K+ out of the cell b. Na+ out of and K+ into the cell c. equal numbers of Na+ out of and K+ into the cell d. more K+ into than Na+ out of the cell