NEET BIOLOGY

Detailed explanation-1: -RBC is an animal cell. When a animal cell is placed in 1.5% NaCl the cell shrinks because, when a cell is placed in high salt concentration exosmosis will occur and the cell will lose water, water moves from higher water concentration to lower water concentration.

Detailed explanation-2: -Hence, the salt solution acts as a hypertonic solution when compared to the RBC. Therefore, water will move out of the RBC by osmosis and will result in the shrinking of the RBC (water moves from a hypotonic solution to a hypertonic solution).

Detailed explanation-3: -Answer and Explanation: If a red blood cell (RBC) found itself in a concentrated salt solution, the solute concentration would be higher outside the RBC than inside it. Water would move out of the cell via osmosis, and the cell would become shriveled and dysfunctional.

Detailed explanation-4: -Red blood cells placed in a solution with a lower water concentration compared to their contents (eg 1.7 per cent salt solution) will lose water by osmosis and shrink. Water will diffuse from a higher water concentration inside the cell to a lower water concentration outside the cell.

Detailed explanation-5: -A 1% NaCl solution is a hypertonic solution that causes RBC cells to shrink.