A DIAGRAM OF A PLANT CELL
When potato tissue is put in diluted concentrated sucrose solution for exeample.0.4M of concentrated sucrose solution (8cm3 of sucrose solution and 12cm3 diluted water). The water will move through both direction of the potato’s membrane, but will move in one direction than the other direction. When the concentration of the sucrose is the same on both side of the membrane .At this point the net movement of water is zero, and zero is the equilibrium of the net movement of water.
EXPECTED RESULT
My result is based on my hypothesis and pilot study. My result graph looks like downward slope because when the concentration of sucrose solution increase the mass of the potato decreases meaning the more the concentration of sucrose solution the more the potato cell shrinks.
Variables:
Independent variable: The independent variable is also known as the output variable. In this experiment, the input variable of this experiment is the concentration of the sucrose solution.
Dependent variable: The dependent variable in this experiment is the mass of the potatoes
Other variable: the other variables are variable that could stop you from having a wrong result in this experiment. This could wrong measurement when diluting the concentrated sucrose solution. Inaccurate mass of the potatoes
Apparatus:
- 33 plastics breaker
- Core borer
- 2 potatoes
- Measuring cylinder (big and small size)
- String
- Paper towel
- Slotting title
- Digital beam balance
- Label
- Stop clock
-
330 cm3 of concentrated sucrose solution in a large beaker
-
330cm3distilled water in a lager beaker
PROCEDURE:
- Collect all the apparatus you need.
- Label the beakers accordingly
- Dillute the sucrose solution using the table below
- Each concentration must be repeated in three breakers
- Bore the potatoes on a slotting title.
- Weight the potatoes and record their mass.
- Put the pieces of potatoes in the beakers and to note of the concentration and the mass of potatoes in it.
- After some hours. Slightly dry the potatoes with paper towel then weight the mass of the potatoes.
- Make a record table of your result.
Measurement:
When diluting the concentrated sucrose solution I use big and small measuring cylinders when needed to get an accurate measurement. The concentrated sucrose solution is measurement in mole. The range measurement is from 0 -1 mole. The potato pieces have a different measurement from each other.
Fairness Precaution:
The fair precautions in this help to give an accurate result experiment are: Allowing the potato tissue stay longer in the concentrated sucrose solution to allow the solution pentrate fully to the core of the sample. By repeating, the test for each concentration and this will decrease errors. Being more accurate when diluting the sucrose solution with the approve amount of distilled water will also reduces errors. Making sure the potatoes are recorded accurately and the concentration of sucrose where the potato was put in was recorded.
Safety: I will ensure safety around the lab by: wearing safety goggles, lying paper towel when drying the potatoes, removing baggage from walking space. Push stool under the table, walk carefully and slowly and handle apparatus very carefully.
Data Recording:
Data presentation:
EVALUATION: Although my result supports my hypothesis. There were several anomalous results and a large deviation for each result; This means there were some reasons that made they quit different from each other, which are: By allowing the potato to stay longer in the concentrated sucrose solution to give you more accurate result. Also using small and big measuring cylinder to obtain an accurate measurements when diluting the concentrate sucrose solution, I was also more accurate in diluting the concentrated sucrose solution. The concentration was also repeated several times unlike in my pilot study.
