Drawing of Elodea in 20% NaCI These cells exhibit what process? Observe the red

Question

Drawing of Elodea in 20% NaCI These cells exhibit what process? Observe the red blood cells suspended in different solutions in Figure Illustration of Red Blood Cells. Fill in the blanks with the appropriate word from the following group: hemolysis, water, increase, crenation, decrease, isotonic. The RBC's in Figure 6.6"a"are suspended in an solution. If red blood cells are placed in a hypertonic solution they lose and in size. This process is called If red blood cells are placed in a hypotonic solution they gain and in size. This process is called Normal saline is isotonic to RBC's. What is the concentration of NaCI in normal saline?

Explanation / Answer

1.The RBC in fig a are suspended in an isotonic solution

Isotonic solution is the solution which has same concenteration as that of RBC.

2. If RBC are placed in hypertonic solution they lose water and shrink in size. The process is known as exosmosis.

If a cell is placed in hypertonic solution ( a solution having lower conc of water and high conc of solute), cell will loose water. More water molecule leave the cell and move outward, resulting in shrinkage and reduction of volume.

3. If RBC are placed in hypotonic solution they gain water and swell in size. the process is known as Endosmosis

If a cell is placed in hypotonic solution ( a solution having lower conc of soluter and high conc of water), cell will gain water by osmosis. Cell will swell as more water enter into the cell.

4. Concenteration of Naci on normal saline is 0.9% w/v

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