* INTRODUCTION ----------------------------------------------------------- 3
* AIMS ----------------------------------------------------------- 4
* HYPOTHESIS ----------------------------------------------------------- 5
* RESULTS ----------------------------------------------------------- 6
- Calculations
- Table 6.1
- Table 6.2
- Table 6.3
- Graph 6.1
- Graph 6.2
* DISCUSSIONS ----------------------------------------------------------- 7
* CONCLUSION ----------------------------------------------------------- 8
* REFERENCE ----------------------------------------------------------- 9
TITLE
Osmotic pressure within red blood cell.
INTRODUCTION
Osmosis is a passive movement of water molecules going across the partially permeable membrane. It is a very spontaneous process due to the downhill energy flow known as “water potential” by which, water molecules move from a region of higher water potential to a region of lower water potential. Pure water has the highest water potential value which is zero ( = 0 ). This process occurs in cells, regardless of animals or plants. Thus, osmotic pressure is a term used when the pressure exerted by water molecules passes through a partially permeable membrane during osmosis. Osmotic pressure occurs whenever there is a semi permeable membrane that acts as a barrier to separate two different concentrations. The higher the concentration between the solutes, the higher the osmotic pressure. Osmotic pressure can be classified into three tonicities, which are Hypotonic, Isotonic and Hypertonic. Hypotonic is a situation when the concentration of water in cells are more than water outside the cell, causing water to flow into the cell until it ruptures and plasmolyse in animal cell and plant cell respectively. Isotonic is a situation where the concentration of water of cells is equal to the concentration of the water in the surrounding environment.