If a cell has some salt inside it but lacks ion channels and
If a cell has some salt inside it but lacks ion channels, and the cell is put into a beaker of pure water, what will happen?
A)Water will diffuse out of the cell, but salt cannot cross the membrane
B) Water will diffuse into the cell, but salt cannot cross the membrane
C) Salt will diffuse out of the cell, but water cannot cross the membrane
D) Salt will diffuse out of the cell, and water will diffuse into the cell
E) Salt will diffuse out of the cell, and water will diffuse out of the cell too.
Solution
B) Water will diffuse into the cell, but salt cannot cross the membrane
Presence of salt inside the cell makes inside of the cell hypertonic with respect to outside of the cell. Water diffuses into the cells to maintain the same water concentration.
