The Resting Membrane Potential
Clicker Questions
Prepared by
Nora Hebert
Red Rocks Community College
Copyright © 2010 Pearson Education, Inc.
Copyright © 2010 Pearson Education, Inc.
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
Copyright © 2010 Pearson Education, Inc.
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
Copyright © 2010 Pearson Education, Inc.
Copyright © 2010 Pearson Education, Inc.
The value of the resting membrane
potential is ________.
a.
–70 mV
b.
+30 mV
c.
–90 mV
d.
–55 mV
Copyright © 2010 Pearson Education, Inc.
The value of the resting membrane
potential is ________.
a.
–70 mV
b.
+30 mV
c.
–90 mV
d.
–55 mV
Copyright © 2010 Pearson Education, Inc.
Copyright © 2010 Pearson Education, Inc.
The plasma membrane is more permeable
to ________.
a.
sodium ions
b.
potassium ions
Copyright © 2010 Pearson Education, Inc.
The plasma membrane is more permeable
to ________.
a.
sodium ions
b.
potassium ions
Copyright © 2010 Pearson Education, Inc.
Copyright © 2010 Pearson Education, Inc.
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.
Copyright © 2010 Pearson Education, Inc.
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.
Copyright © 2010 Pearson Education, Inc.
Copyright © 2010 Pearson Education, Inc.
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
Copyright © 2010 Pearson Education, Inc.
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
Copyright © 2010 Pearson Education, Inc.