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Biology Project

This document is a student report on an experiment demonstrating osmosis using eggs. The aim was to show water moving into and out of eggs placed in solutions of different concentrations. In the first part of the experiment, one egg was placed in water (hypotonic solution) and gained weight, while the other egg placed in sugar syrup (hypertonic solution) lost weight due to water moving by osmosis. When the eggs were switched to the opposite solutions, water then moved in and out in the reverse direction for each egg. The student concluded that osmosis caused water to move into the egg in water but out of the egg in the sugar solution.

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Biswarup Naha
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2K views14 pages

Biology Project

This document is a student report on an experiment demonstrating osmosis using eggs. The aim was to show water moving into and out of eggs placed in solutions of different concentrations. In the first part of the experiment, one egg was placed in water (hypotonic solution) and gained weight, while the other egg placed in sugar syrup (hypertonic solution) lost weight due to water moving by osmosis. When the eggs were switched to the opposite solutions, water then moved in and out in the reverse direction for each egg. The student concluded that osmosis caused water to move into the egg in water but out of the egg in the sugar solution.

Uploaded by

Biswarup Naha
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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OSMOSIS IN

EGGS
{PICTURE}

NAME: BISWARUP NAHA


ROLL NO. : 17
CLASS: XII/B

1
HEMSHEELA MODEL SCHOOL, DURGAPUR

TOPIC- OSMOSIS IN EGGS

In partial fulfilment of AISSCE 2019-20

NAME : Biswarup Naha


BOARD ROLL NO :
CLASS : XII/B

2
ACKNOWLEDGEMENT

 PRINCIPAL – Ms Anindita Home Choudhury


 VICE-PRINCIPAL – Mr Shankar Bardhan
 SUBJECT TEACHER – Mrs Paromita Roy
 H.O.D , BIOLOGY –Mrs Mekhala Mukherjee
 LAB ASSISSTANT – Mr amalesh manna
 MOTHER – Mrs Usha Naha
 FATHER – Mr Biswajit Naha

________________ ________________
Student’s signature Teacher’s signature

3
CONTENT

Introduction
Aim
Theory
Materials required
Procedure
Observations
Conclusions
Bibliography

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INTRODUCTION

Osmosis is very important for living organisms. Living


cells use this process to pull in & expel water through
a semi-permeable membrane based on the
concentration gradient i.e. from a medium of higher
concentration to a medium of lower concentration.
This particular project was done to find out if water
would move from a hypotonic solution and from a
hypertonic solution in and out of an egg respectively.

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AIM

To demonstrate the process of osmosis by


using egg as an osmometer.

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THEORY

Osmosis is a special type of diffusion, in which


solvent molecules move from a region of their higher
concentration to the region of lower concentration
through a semi-permeable membrane till a state of
equilibrium is reached.
If a cell is placed in a hypertonic solution (i.e. a
solution having higher concentration of solute and
lower concentration of water) then the water
molecules will move out of the cell, causing it to get
shrink.
If a cell is placed in a hypotonic solution (i.e. a
solution having lower concentration of solute and
higher concentration of water) then the water
molecules will move into the cell, causing it to get
swelled up.

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MATERIALS REQUIRED

Two eggs, a hypertonic solution of sugar, a


hypotonic solution of salt, a weighing
machine.

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PROCEDURE
At first two eggs were taken and dissolved in a
vinegar solution separately & left undisturbed for 3
days to remove the outer shell.
Then we have taken two beakers and marked them A
& B.
We have filled beaker A with 300ml of water and
beaker B with 300ml of sugar syrup.
Then we have submerged the eggs in the beakers and
left it undisturbed for a time lapse of about 7-8 hours.
Then we have measured the weight of the eggs and
recorded the values.

[ SWITCHING THE EGGS ]

In the next round, we have switched the eggs and


submerge the swelled up egg in water & the shrunk
egg in sugar solution.
Again, we have left it undisturbed for 7-8 hours.
 Finally, the eggs were taken out from their respective
mediums, their weights were measured and recorded.
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OBSERVATIONS
SOLUTION INITIAL WEIGHT FINAL WEIGHT WEIGHT
OF EGG OF EGG DIFFERENCE
(g) (g) (g)

Water 94g 96.7g 2.7g

Sugar syrup 93.4g 89.4g -4g

[ after switching the eggs with


their respective mediums ]

SOLUTION INITIAL WEIGHT FINAL WEIGHT WEIGHT


OF EGG OF EGG DIFFERENCE
(g) (g) (g)

Water 96.7g 92.2g -4.5g

Sugar syrup 89.4g 95.8g 6.4g

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CONCLUSION

In the first round the egg in beaker A has undergone endosmosis and
its weight got increased whereas in case of the egg in beaker B,
exosmosis took place decreasing the weight of the egg.
When we have switched the eggs with respect to their mediums,
exosmosis took place in the case of the egg which has got an increase
in weight and vice-versa.

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BIBLIOGRAPHY

http://en.Wikipedia.org/wiki/Osmosis
http://www.yutube.com/egg_osmosis
http://www.sciencesparks.com/osmosis-in-eggs

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