• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The determination of the water potential of potato tissue.

Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  • Essay length: 511 words
  • Submitted: 01/10/2003
Share this essay:
GCSE Life Processes & Cells

The first 200 words of this essay...

EXPERIMENT REPORT

--The determination of the water potential of potato tissue

Introduction:

This experiment involves the use of different sucrose solutions with different concentrations, in order to measure the water potential in a chosen potato.

The theoretical background is the osmosis in plant cells: a plant cell loses water by osmosis if it is in a more concentrated solution (which has a lower water potential) than the cell's cytoplasm and vacuole. Reversely, a plant cell absorbs water by osmosis if it is placed in a solution of higher water potential.

Hypothesis:

The difference of water potential between the cell's cytoplasm and vacuole and the surrounding solution causes water to enter or leave the cell, resulting the change of the tissue's mass.

Method:

1. Prepare 18 potato slides, which each has a thickness of 4 to 5 millimetres, and divide them into 6 groups. Blot dry, weigh on a balance and mark down their weight as ' First weight'.

2. Dilute the 10% sucrose solutions provided and thus provide six different sucrose solutions with concentrations of 10%, 5%, 2.5%, 1.25%, 0.6% and 0%.

3. Put the samples

Read more
The above preview is unformatted text

Found what you're looking for?

  • Start learning 29% faster today
  • Over 150,000 essays available
  • Just £6.99 a month

Marked by a teacher

This essay has been marked by one of our great teachers. You can read the full teachers notes when you download the essay.

Peer reviewed

This essay has been reviewed by one of our specialist student essay reviewing squad. Read the full review on the essay page.

Peer reviewed

This essay has been reviewed by one of our specialist student essay reviewing squad. Read the full review under the essay preview on this page.