Question

When a cell is placed in 0.25 M concentrated sugar solution, there is no change in it. So the external solution is called

• A. Hypertonic
• B. Isotonic
• C. Hypotonic
• D. None of the above

Answer 1

The correct option is B Isotonic

There are three types of solutions that can occur in your body based on solute concentration: isotonic, hypotonic, and hypertonic.

A hypertonic solution is one where the concentration of solute is greater outside the cell than inside the cell. An isotonic solution is one in which the concentration of solute is the same both inside and outside of the cell and a hypotonic solution is one in which the concentration of solute is greater inside the cell than outside of it.

So, when the cell is placed in 0.25 M concentrated sugar solution and there is no change in it, the external solution is isotonic, i.e it has the same concentration of 0.25M.

Thus, the correct answer is option (B).