Investigation to Determine the Effect of a Range of Different Concentrations of Sugar Solutions on the Potato Cells

Investigation to Determine the Effect of a Range of Different Concentrations of Sugar Solutions on the Potato Cells

Aim

My aim is to set up an investigation to determine the effect of a

range of different concentrations of sugar solutions on potato cells.

I predict that the higher the concentration the more the length and

mass of the potato chip will decrease. The lower the concentration the

more the length and mass of the potato chip will increase. This should

happen due to the law of osmosis. There will be a point at which

nothing will change because the concentration inside and outside the

potato is equal. The concentrations above this point will decrease,

and as it gets weaker after that point will gain.

Apparatus

· Measuring Cylinder x2 10ml

· Test tube x11

· Test tube holder x2

· Potato chips x11

· Scalpel

· Top pan balance

· Ruler

Method

Firstly I will set up the apparatus as shown in my diagram. I will

make up 11 solutions, which then I will pour a different concentration

of each in each test tube. (Table below showing how I am going to make

my solutions.)

Test tube No.

%

Water (ml)

20% Sugar solution (ml)

1

0

10

0

2

2

9

1

3

4

8

2

4

6

7

3

5

8

6

4

6

10

5

5

7

12

4

6

8

14

3

7

9

16

2

8

10

18

1

9

11

20

0

10

I will then measure 11 potato chips with a ruler accurately and cut