Using the patch clamp technique, a researcher measures a single channel in a mem
ID: 42186 • Letter: U
Question
Using the patch clamp technique, a researcher measures a single channel in a membrane. The receptor channel passes 3 pA (picoamperes) of ionic current over a period of 8 msec at -60 mV; 1 pA = 10 -12 ampere.
Based on your knowledge of nerve transmission, this movement of ions will
B. stimulate a change in a postsynaptic membrane if three channel events are combined.
C. not stimulate a change in a postsynaptic membrane.
D. generate a current resulting in membrane depolarization.
E. stimulate a change in a postsynaptic membrane
Explanation / Answer
Based on the given data, the receptor channel passes 3 pA (picoamperes) of ionic current over a period of 8 msec at -60 mV; 1 pA = 10 -12 ampere. So, this movement of ions will generate a current resulting in membrane depolarization. Thus, the correct option is (D).
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