Question

Match the concentrations of Na+ and K+ inside and outside the cell membrane:

1. ___ K+ outside
2. ___ K+ inside
3. ___ Na+ inside
4. ___ Na+ outside
A. 12 mM
B. 145 mM
C. 150 mM
D. 5 mM

Answer 1

In the resting state, the concentration of Na+ is higher outside the cell, while the concentration of K+ is higher inside the cell. The sodium-potassium pump actively transports three sodium ions out of the cell for every two potassium ions in, creating a net negative charge inside the cell.

Step-by-step explanation:

In the resting state, the concentration of Na+ is higher outside the cell, while the concentration of K+ is higher inside the cell.

Sodium (Na+) tends to move into the cell, while potassium (K+) tends to move out of the cell.

Additionally, the sodium-potassium pump actively transports three sodium ions out of the cell for every two potassium ions in, creating a net negative charge inside the cell.