When water moves into red blood cells placed in a hypotonic environment, they will

Question

BlackTom AI · Accepted Answer

In this question, we’re evaluating what happens to red blood cells (RBCs) when they are placed in a hypotonic environment.
Option 1: 'remain unchanged.' In a hypotonic solution, the extracellular fluid has lower solute concentration than the inside of the cell, so water tends to move into the cell. Therefore, RBCs will not remain unchanged; they will take in water.
Option 2: 'crenate.' Crenation is the shrinkage of cells due to water leaving the cell in a hypertonic solution, not a hypotonic one. Since hypotonic conditions drive water into the cell, crenation is incorrect here.
Option 3: 'swell and hemolyze.' A hypotonic environment causes water influx, leading to swelling. If the influx continues, the cell membrane can rupture, resulting in hemolysis. This aligns with the expected behavior of RBCs under hypotonic stress.
Thus, Option 3 correctly describes the outcome, while the first two options reflect responses to other osmotic conditions (isotonic or hypertonic) and are not appropriate for a hypotonic environment.

When water moves into red blood cells placed in a hypotonic environment, they will

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