Question

93 SUluiunl Ul CUnUlu. 6. With regards to red blood cells (RBCS), what are 2 examples of solutions of glucose and NaCI that are isotonic? 7. What would happen to a RBC if it was put into a hypotonic solution? 8. Into a hypertonic solution? 9. Label these solutions as hypotonic, hypertonic, or isotonic. Also state what would happen to the red blood cell (crenation, stays nice, hemolysis) Solution: Нуро-, Нурer-, or Isotonic Crenation, Stays Nice, Hemolysis 3% NaCl DI H2O 5% glucose 12% glucose 1% glucose 86

Answer 1

6. With regards to red blood cells (RBC), the examples of two isotonic solutions are -

5% glucose solution and 0.84% NaCl.

7. If a RBC was put into a hypotonic solution, water would naturally enter to the cell through osmosis as the concentration of water in the RBC is lower. Since the RBC does not have a cell wall to maintain cell rigidity and shape, it will expand due to the excess amount of water untill it eventually blurst. This is called Hemolysis.

8. If RBC was put into a hypertonic solution, it shrinks as water is drawn out of the cell and into the surrounding hypertonic solution, i.e. , crenation will occur.

9.

Solution	Hypo/Hyper/Isotonic	Crenation/Stays nice/Hemolysis
3% NaCl solution	Hypertonic	Crenation
DI water	Hypotonic	Hemolysis
5% glucose	Isotonic	Stays nice
12% glucose	Hypotonic	Hemolysis
1% glucose	Hypertonic	Crenation