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AIM To investigate the effect of osmosis on potato when put in different concentrations of sugar solution.

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Introduction

BIOLOGY EXPERIMENT OSMOSIS AIM To investigate the effect of osmosis on potato when put in different concentrations of sugar solution. INTRODUCTION: Osmosis is a special type of diffusion of water molecules through a semi permeable membrane usually occurring in living organisms .It occurs both in plant and animal cells. The only difference being that plant cells have larger vacuoles and cell walls due to which they do not burst , whereas animal cells do burst due to excess water intake , and the plant cells become TURGID.( firm and rigid) , whereas if there is a water loss it becomes FLACCID OR PLASMOLYSED ( shrinking) ...read more.

Middle

2) Using the scalpel again make a deep " U" shaped dent in each of the potato chips which have been cut.( Make sure they are not too deep and take care that which cutting the dent , the other side is not cut or osmosis will not occur) 3) Measure the length of each chip using a ruler accurately. 4) Put the 10%, 20% , 30% , 40%, 50% sugar solutions in individual potato chips ( not all in one) , and name the potato chips , in which the individual sugar solutions are poured. 5) Start the stop watch. 6) After one hour, take out the chips and dry them. 7) Measure the length of each chip now.( accurately) ...read more.

Conclusion

the sugar concentration in the solution increased the size of the potato started decreasing as the water concentration inside the potato was more, therefore it gave out water instead of absorbing it, hence it reduced in size after 1 hour. EVALUATION: The results we got were decent and somewhat near our expectations however some unintentional errors may have occurred and varied our results thankfully, the hypothesis was proved correct We may have been subject to human error as we may have not accurately measured the length of each chip, secondly the chips may not have been cut absolutely equally, and the size and shape of the dent to some extent may have been a hindrance to the accuracy of our results. ...read more.

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