Question

At rest, the concentrations of _____ are higher inside of a neuron, whereas the concentrations of _____ are higher outside of a neuron. A) potassium (K+); sodium (Na+) B) sodium (Na+); potassium (K+) C) potassium (K+); chloride (Cl–) D) potassium (K+); anions (A–)

Answer 1

The resting membrane potential is determined by the unusual distributionof ions that is charged particles between the inside and the outside the cell. In most of the animal cells potassium ions (K⁺) are the resting potential. Potassium ions, the concentration of potassium is higher inside cells than outside is beacuse of active transport. Most cells have potassium-selective ion channel proteins that remain open all the time. Sodium is higher in inside of cell.

Hence option (a) is correct.