If a Cell Is Bathed in an Extracellular Solution Higher

Multiple Choice

If a cell is bathed in an extracellular solution higher in Na⁺ concentration than the cytoplasm, it will use _______ to maintain its normal intracellular concentration of Na⁺.

A) active transport against the concentration gradient of Na⁺
B) simple diffusion as the primary means of Na⁺ transport
C) secondary active transport for passive diffusion of Na⁺
D) carrier proteins to increase the rate of Na⁺ diffusion
E) facilitated diffusion to pump Na⁺ ions out of the cell