Red blood cells are placed in a hypotonic solution.
as a result, the red blood cells change, as seen here in the illustration.

1. describe the movement of water across the cell membrane. be sure to indicate the direction the water moves.

2. explain why the water moves in the direction you have chosen.

3. describe the change in the red blood cells, using correct terminology.
how would this differ if the red blood cells had been placed in an isotonic solution?

If Red blood cell is placed in a hypotonic solution, the water moves into the cell. The cell swells and become turgid.

Explanation:

This is a type of osmosis. here plasma membrane of RBC works as semipermeable(only solute can move) osmotic membrane.

We all know that, osmosis is a process where liquid moves across semipermeable membrane from less concentration gradient to high concentration gradient.  

There are three types of solution in respect of the concentration of cell's cytoplasm. These are

answer; ///(b) it is composed of four protein chains and four heme groups;

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