If a Cell Were Bathed in an Extracellular Solution High

Multiple Choice

If a cell were bathed in an extracellular solution high in Na⁺, what type of ion movement would maintain the proper balance of Na⁺ ions between the inside and the outside of the cell?

A) Active transport of Na⁺ against its concentration gradient
B) Facilitated diffusion of Na⁺ through ion channels
C) Secondary active transport of K⁺
D) Simple diffusion of Na⁺
E) Simple diffusion of K⁺