Question

Short / Long answer type questions.
Correlate the movement of materials across the cell membrane with the terms hypertonic, hypotonic, and isotonic.

Answer 1

• Movement of the water takes place across the plasma membrane takes places by osmosis which is the movement of water from the place of higher concentration of water to the lower concentration of water.
• When a cell is kept in a solution where the solution has less water concentration and more solute concentration as compared to the cytoplasm of the cell; the water present in the cytoplasm of the cell will move outside the cell into the solution where there is less concentration of water. This type of solution with lower concentration of water compared to the cell is called hypertonic solution.
• Same way when a cell kept in the solution with high concentration of water as compared to the cell cytoplasm and so the water from the solution will enter the cell by the process of endosmosis and the solution outside with higher water concentration is known as hypotonic solution.
• The third one is the isotonic solution where the solution outside the cell and the cytoplasm of the cell have the same concentration of the water and so there will be no movement of water.
• The materials that are soluble in water at the time of flow of water during endosmosis and exosmosis flow in and out of the cell respectively along with the water.