The opening and closing of single ion channels produces tiny electrical currents across the cell membrane, which can be measured by
A) the Goldman equation.
B) patch clamping.
C) the Nernst equation.
D) the electrochemical gradient.
E) the resting potential.

Question

Quizplus · Accepted Answer

Patch clamping is a technique that allows the measurement of electrical currents produced by the opening and closing of single ion channels across a cell membrane. The technique involves using a microelectrode to create a seal around a small patch of membrane, which allows the recording of the electrical currents produced by individual ion channels. The Goldman equation, Nernst equation, electrochemical gradient and resting potential are all related to the movement of ions across a membrane, but do not directly measure the electrical currents produced by single ion channels.

The Opening and Closing of Single Ion Channels Produces Tiny