Action potentials are produced by the
A) opening of voltage-activated sodium channels.
B) closing of ligand-activated chloride channels.
C) closing of ligand-activated potassium channels.
D) opening of ligand-activated potassium channels.
E) closing of voltage-activated calcium channels.
Question 2
The brief period of time immediately after the initiation of an action potential when it is absolutely impossible to initiate another one in the same neuron is called the
A) threshold of excitation.
B) threshold of inhibition.
C) absolute refractory period.
D) IPSP.
E) relative refractory period.
The discovery of aquaporins, water channels made of a transmembrane protein.
Comparison of the radius of fruits produced by native and introduced species of Sapindaceae
Action Potentials and Contractions of a Muscle Fiber
Action Potentials
Headlights were turned off and the battery voltage quickly recovered to indicate 12.6 volts.
Proteins as Transport Channels