Potato Osmosis Lab Report

Osmosis in a potato chip

11/25/2014

Newham College

Marcelle Raissa Bernadet

AIM: Investigate the effect of different concentration of sucrose solution on the amount of osmotic activity between the sucrose solution and different potato chip of same size.

Introduction

Osmosis is the movement of water from a high water concentration to a low water concentration through a semi permeable membrane, osmosis only take place in living cells; it objective is to reach the equilibrium between the cell concentration and outside solution. Even when the equilibrium is reached the water movement continue.

There is other kind of osmosis like:

Osmosis in a red blood cell BBC/gcsebitesize

If a red blood cell is placed in water, water enters the cell by

Root hair cells are adapted for this by having a large surface area to speed up osmosis.

The absorbed water is transported through the roots to the rest of the plant where it 's used for different purposes:

• It 's a reactant used in photosynthesis

• It supports leaves and shoots by keeping the cells rigid

• It cools the leaves by evaporation

• It transports dissolved minerals around the plant Plant root hair

Osmosis in eggs: SciGuys/science at home

Egg is place into a cup of vinegar to remove it hard protection and only let the membrane visible, but during it process in the vinegar the egg will absorb the water present in the vinegar solution via osmosis process, but if the same egg is place in a corn syrup it will lose water because the water inside the egg will leave the egg to go in the syrup and try to dilute It, the egg membrane will let the water out but not the other element present in the egg like sugar molecules or proteins. The egg will lose water and shrink, if the same egg is place in water mix with bleu food colouring the water will move into the egg in 24 hours by the bleu coulor of the egg it is show that the water had move into the egg via osmosis

Examples of Diffusion

Diffusion in the lungs BBC/gcsebitesize

In the lungs, the blood will continue to take in oxygen from the alveolar air spaces, provided there is more oxygen in the air spaces than in the blood. The oxygen diffuses across the alveolar walls into the blood. The circulation takes the oxygen-rich blood away and replaces it with blood that is low in oxygen.

Diffusion in lung http://learningon.theloop.school.nz/ Diffusion in the small intestine:

The inside wall of the small intestine is thin, with a large surface area. This allows absorption to happen quickly and efficiently. To get a big surface area, the inside wall of the small intestine is lined with tiny villi. These stick out and give a big surface area. They also contain blood capillaries to carry away the absorbed food molecules

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