Biology Investigation: Effect of Different Concentrations of Sucrose Solutions on Potatoes
Biology Investigation:
Effect of different concentrations of sucrose solutions on the mass of potatoes
Research question
Is the mass of potatoes going to be smaller or bigger in different sucrose concentration?
Introduction
Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region.
Involved in this process are hypotonic, hypertonic and isotonic solutions. A hypotonic solution is one with a lower osmotic pressure, indicating that the net movement of water moves into the said solution whereas a hypertonic solution is one with a higher osmotic pressure, thus the net movement of water will be leaving the hypertonic solution. Lastly, an isotonic solution entails no net movement of water across a semi-permeable membrane as the two substances involved display osmotic equilibrium.
Hypothesis
The more hypertonic potato cores are to sucrose solution, the more weight potato cores gain. On the other hand, potato cores will decrease in weight when it is hypotonic to sucrose solution.
Variables:
Dependent: The final mass of the potato cores
Independent: Concentration of sucrose
Controlled: Size of potato, time spent in solution, amount of solution
Method for Collecting Data:
We decided to do a range of about 4.84g per piece of potato in each concentration of sucrose.
Equipment:
Sucrose solutions ( 0.2M, 0.4 M, 0.6M, 0.8M, 1M)
Distilled water
6 universal bottles with a lids
6 labels
Cylinder
Knife/ scalpel
Ruler
Paper towels
Weight
Procedures:
1. Collect 6 universal bottles with a lids and 6 labels. Write your each concentration on the bottle.
2. Look at the list of concentrations and find out which concentration of solution you will be using.
3. Use a measuring cylinder to measure 20 ml of the
Effect of different concentrations of sucrose solutions on the mass of potatoes
Research question
Is the mass of potatoes going to be smaller or bigger in different sucrose concentration?
Introduction
Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region.
Involved in this process are hypotonic, hypertonic and isotonic solutions. A hypotonic solution is one with a lower osmotic pressure, indicating that the net movement of water moves into the said solution whereas a hypertonic solution is one with a higher osmotic pressure, thus the net movement of water will be leaving the hypertonic solution. Lastly, an isotonic solution entails no net movement of water across a semi-permeable membrane as the two substances involved display osmotic equilibrium.
Hypothesis
The more hypertonic potato cores are to sucrose solution, the more weight potato cores gain. On the other hand, potato cores will decrease in weight when it is hypotonic to sucrose solution.
Variables:
Dependent: The final mass of the potato cores
Independent: Concentration of sucrose
Controlled: Size of potato, time spent in solution, amount of solution
Method for Collecting Data:
We decided to do a range of about 4.84g per piece of potato in each concentration of sucrose.
Equipment:
Sucrose solutions ( 0.2M, 0.4 M, 0.6M, 0.8M, 1M)
Distilled water
6 universal bottles with a lids
6 labels
Cylinder
Knife/ scalpel
Ruler
Paper towels
Weight
Procedures:
1. Collect 6 universal bottles with a lids and 6 labels. Write your each concentration on the bottle.
2. Look at the list of concentrations and find out which concentration of solution you will be using.
3. Use a measuring cylinder to measure 20 ml of the