Question

How do ions get into the cell?

Answer 1

Entry of ions into the cell:

1. Ions get into the cell by facilitated diffusion.
2. Facilitated movement is the selective passive movement of molecules along the concentration gradient.
3. Ions cross the hydrophobic plasma membrane through protein channels present in the plasma membrane.
4. Ions diffuse into the cell due to the presence of a concentration gradient, which is facilitated by protein channels.

Therefore ions get into cells via facilitated cell diffusion.