Isotonic Solution means which statement?

Isotonic Solution means which statement?

• A. Water Concentration Is Higher Than Solute
• B. Solute Concentration Is Higher Than Water
• C. It Causes Cells To Explode
• D. The Solute And Water Concentration Are Equal

Answer: (D)

Isotonic means the same amount of solute on both sides of the cell membrane, so the solution outside the cell has the same osmotic pressure as the inside. When solute and water concentrations are equal, water moves in and out at balanced rates, and the cell’s size stays the same. The statement that the solute and water concentrations are equal captures this balance precisely. If water concentration were higher outside (a hypotonic outside environment), water would tend to move into the cell, causing swelling or even bursting. If solute concentration were higher outside (a hypertonic outside environment), water would move out, causing the cell to shrink. The idea that the solution makes cells explode would only apply to extreme hypotonic conditions, not to isotonic ones.

Isotonic means the same amount of solute on both sides of the cell membrane, so the solution outside the cell has the same osmotic pressure as the inside. When solute and water concentrations are equal, water moves in and out at balanced rates, and the cell’s size stays the same. The statement that the solute and water concentrations are equal captures this balance precisely.

If water concentration were higher outside (a hypotonic outside environment), water would tend to move into the cell, causing swelling or even bursting. If solute concentration were higher outside (a hypertonic outside environment), water would move out, causing the cell to shrink. The idea that the solution makes cells explode would only apply to extreme hypotonic conditions, not to isotonic ones.