Neuron Cells Generate Electrical Signals by Concentration Gradients Across Membranes

question 150

Multiple Choice

Neuron cells generate electrical signals by concentration gradients across membranes.Assuming a potassium ion concentration of 0.00300 M inside the cell,and a concentration of 0.135 M outside the cell,what is the electrical potential across the cell membrane? Body temperature is 310 K.The sign identifies the change in the electrical potential across the membrane and which way the ions flow.

• A)"+102 mV"
• B)"-136 mV"
• C)"+10.0 mV"
• D)"-204 mV"
• E)+204 mV"

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