A cell is placed in an isotonic solution. How does the cell maintain homeostasis in this environment?

Question

a
There is no movement of water molecules into or out of the cell because the concentrations of solute particles inside and outside the cell are the same.
b
Water will move across the cell membrane to the outside of the cell because the solution has a higher concentration of solute particles than the cell.
c
Water will move across the cell membrane to the inside of the cell because the cell has a higher concentration of solute particles than the solution.
d
Water will move across the cell membrane in both directions because the concentrations of solute particles inside and outside the cell are the same.

Answer 1

The correct answer is:

d Water will move across the cell membrane in both directions because the concentrations of solute particles inside and outside the cell are the same.

In an isotonic solution, the concentration of solutes is equal inside and outside the cell, leading to a balance where water moves freely in and out of the cell without changing its volume. This movement of water helps the cell maintain homeostasis.