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The effect of sucrose on liver cells. Prediction Osmosis is the “net movement
of water molecules from an area of high water potential ...
... dietary carbohydrate such as starch or sucrose by hydrolysis ... A well-known effect
of insulin is to decrease ... the fatty acids delivered from the liver, are used ...
... The last effect makes a patient dangerously unaware of ... For example, Sucrose is the
sugar of which honey is ... Also, certain cells of the liver continue to produce ...
... investigation is to explore the effect of different ... alkaline fluid produced by the
liver and made by ... Amylase Starch Maltase Maltose Sucrase Sucrose Lipase Fats ...
Submitted by gman55 on July 11, 2007
Category: Science
Words: 3675 | Pages: 15
Views: 106
Popularity Rank: 87,657
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Prediction
Osmosis is the “net movement of water molecules from an area of high water potential to an area of low water potential through a partially permeable membrane.” The diagram below illustrates the process of osmosis. (See Figure 1)
As shown by the Figure 1, water molecules move from a region where there are many water molecules to an area of less water molecules.
This means that in the potato cells, water molecules will move in or out of the cell depending on the concentration of the sucrose solution and the water potential that the cell has. The process of water molecules moving out a cell is called exosmosis and the process of water moving into a cell is called endosmosis. Endosmosis occurs when the water potential inside the cell is lower than the water potential outside the cell.
Figure 2 illustrates the processes that will occur in the cells.
As varying concentrations of sucrose solution will be used, ranging from 0.0M to 1.0M the amount of water molecules that passes in or out the potato cells and in or out the sucrose solution will vary with concentration. I predict that at 0.0M where there are no sucrose molecules and just water molecules, water will move into the cell as the solution has a higher water potential than the potato cell.
From my preliminary results I can see that at concentrations of 0.0M and 0.2M of sucrose solution there was a positive increase in mass as for 0.0M the average percentage change in mass was 7.47% and for 0.2M there was an average percentage change in mass of 3.85%. This increase in mass is due to water moving into the cells (endosmosis). There will be a point where water will stop moving in the cell as the water potential in the sucrose becomes equal to the water potential in the potato cells. Therefore as the concentration of sucrose increases from this point, less water will diffuse out the cells as there is higher water potential in the...
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