a-cell-membrane-has-a-transmembrane-potential-of-70-mv-and-a-chemical-gradient-f

Question

A cell membrane has a transmembrane potential of -70 mV and a chemical gradient favoring the influx of Na+ ions. Why is it important to consider both gradients for Na+ diffusion?

Accepted Answer

Both gradients determine the direction and rate of Na+ ion diffusion.

Answer

Only the chemical gradient affects Na+ ion diffusion.

Answer

Only the electrical gradient affects Na+ ion diffusion.

Answer

Neither gradient affects Na+ ion diffusion.