As Biology Coursework - Water Potential

As Biology Coursework - Water Potential-81
Variables: Independent variable: I will manipulate the concentration of the sucrose solutions (which will change the water potential).The concentrations will be 0.0mol.dm-3, 0.2mol.dm-3, 0.4mol.dm-3, 0.6mol.dm-3, 0.8mol.dm-3 and 1.0mol.dm-3. * While the solution's temperature stabilises in the water baths, prepare the apple and carrot samples.This is because the water The potato cells, took in, or gave out the water depending on the concentration of the solution it is surrounded in.

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- As the sucrose solution increased, the mass decreased, and as the sucrose solution decreased, the mass increased Evaluation: I followed the plan correctly; I believe I gained accurate and sufficient enough results to conclude the experiment, and to prove my prediction.

Introduction Richard Eatock 12J Biology Coursework Aim: Investigate the water potential of beetroot tissue using experiments and your own knowledge.

Background Information Definition - "the net movement of water molecules from a region of higher water potential to a region of lower water potential along the concentration gradient across a semi-permeable membrane..." Osmosis is a very special example of diffusion.

It is the movement of liquid molecules across or through a barrier.

if there is less water in the root cells than in the soil.

The water enters the plant root cells by crossing the cell wall.

Osmosis is the movement of water molecules across a partially permeable membrane from a high water concentration to a low water concentration.

Osmosis can be effected different things such as: - Temperature - The warmer the solution, the quicker the osmosis will go.

Effect of Sucrose Solution on Osmosis Aim: The aim of the experiment is to show how varying the concentration of sucrose solution affects osmosis by changing different molar solutions of sucrose and water and how it affects the potato.

Introduction: In this investigation I will be exploring the effect of varying concentration of sucrose sugar solution on the amount of activity between the solution and the potatoes.

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