Explain why blood cells crenate (shrivel) in a hypertonic solution?

In a hypertonic solution, the concentration of solute outside the cell is greater than inside the cell. To counteract this, water from inside the cell moves to outside the cell. Thus, the cell shrivels as it is losing water.

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature