Preview

Osmosis in Potato (Incomplete)

Good Essays
Open Document
Open Document
1026 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Osmosis in Potato (Incomplete)
OSMOSIS IN POTATO TISSUES
Vanessa Tsao, Lovette To, Wang Yeyun, Zhang Shenjia, Alicia Mak
Class 101, Nanyang Girls’ High School, 2 Linden Drive, Singapore 288683
ABSTRACT
In this project, the relationship between the concentration of salt solution and the length of the potato strip that was immersed in it was investigated. Five strips of potato of the same length were placed in different Petri dishes that contained water of different salt concentration. They were left for twenty minutes and the length of each potato strip was recorded after the experiment. The experimental results show that the length of the potato strip increased when placed in water of 0%, 2% and 4% salt concentration while the length of the potato strip decreased when placed in water of 6% and 8% salt concentration, indicating that the salt concentration of the potato strip is between 4% to 6%.
INTRODUCTION
Osmosis takes place from an area of less negative water potential to an area of more negative water potential. However, the water potential of the potato strip may not be zero, hence osmosis may either occur from the potato strip to the solution or vice versa.
It is hoped through the experiment, the effects of osmosis of different stages on the potato strips would be explained, hence getting a better understanding of osmosis and its effect. It is also hoped that from the experiment the method to knowing the water potential in a certain object.
The hypothesis is: If the length of the potato strips is related to the concentration of the salt solution, then increasing the concentration of salt solution will decrease the length of the potato strips.
MATERIALS
-Scalpel -5 strips of potato
-15cm ruler -0% salt solution
-White tile -2% salt solution
-5 Petri dishes with covers
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    Investigating Water Potential of Swed
    • 1139 Words
    • 5 Pages

    Investigating Water Potential of Swed

    This overall flow of water from a dilute area of high water potential to a more concentrated solution of low water potential across a partially permeable membrane is called osmosis. I predicted that the swede cylinders which are put in a test tube with a low potential of sucrose solution would become turgid because the water molecules that are present in the swede will move away from an area of higher potential of water molecules to an area that has a lower potential of water molecules, this means that the swede sample will gain mass and become full almost to an extent where it is ready to burst. The swede samples that are going to be put in a test tube with a high potential of sucrose solution will become flaccid because the swede cylinder will have a higher potential of water molecules and so these molecules will diffuse into the sucrose solution as it has a lower water potential, this means that the potato sample will shrivel and loose mass.…

    • 1139 Words
    • 5 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Bio 101 report
    • 288 Words
    • 2 Pages

    Bio 101 report

    We took three piece of potato and placed them in three beakers with the same quantity of water but with different concentrations, results are:…

    • 288 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Satisfactory Essays

    BIOL 1208 Writing Assessment 2
    • 367 Words
    • 2 Pages

    BIOL 1208 Writing Assessment 2

    Since the change in mass of the potato tubers was negative in the sucrose solutions from 0.2 mM to 0.5 mM, these solutions were hypertonic relative to the potato dicks. In the solution with only 0.1 mM of sucrose, the mass of the potato tubers increased which means that this…

    • 367 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    Ccea as Biology Coursework: an Investigation to Find the Water Potential of Potato and Carrot Tubers in a Sucrose Solution over a 24 Hour Period
    • 1394 Words
    • 6 Pages

    Ccea as Biology Coursework: an Investigation to Find the Water Potential of Potato and Carrot Tubers in a Sucrose Solution over a 24 Hour Period

    An investigation to find the water potential of potato and carrot tubers in a sucrose solution, of concentration 0.00 – 0.50Mol, over a 24 hour period…

    • 1394 Words
    • 6 Pages
    Better Essays
    Read More
  • Good Essays

    Yukon Gold Potato Osmosis
    • 181 Words
    • 1 Page

    Yukon Gold Potato Osmosis

    My hypothesis in this experiment was that a Yukon gold potato will naturally absorb more water than a sweet potato due to the effects of osmosis. Osmosis plays a huge role in biology for a multitude of reasons. As defined by Freeman (2012) “The movement of water is a special case of diffusion that is given its own name: osmosis, occurs only when solutions are separated by a membrane that is permeable to some molecules but not others- that is, a selectively permeable membrane.”(P.90). It is also a type of passive transport, as it does not require energy.…

    • 181 Words
    • 1 Page
    Good Essays
    Read More
  • Good Essays

    Biology experiment on osmosis for gcse very good got an A* as course work so do not miss out
    • 3753 Words
    • 18 Pages

    Biology experiment on osmosis for gcse very good got an A* as course work so do not miss out

    The aim is to investigate the effects of varying concentrations of a salt solution on the amount of osmotic activity between the solution and a potato of a given size.…

    • 3753 Words
    • 18 Pages
    Good Essays
    Read More
  • Best Essays

    Biology Eei
    • 3499 Words
    • 14 Pages

    Biology Eei

    The aim of this experiment was to test the effect of surface area on osmosis and the effect of solute concentration on osmosis. To test this aim to hypotheses were devised. 1) If potato pieces are immersed in various salt solutions, then the pieces with the greatest surface area to volume ratio will experience the greatest weight change, because more water can move by osmosis across the potato cell’s semi permeable membrane. 2) If potato pieces are immersed in various salt solutions, then the pieces immersed in the most concentrated solution will experience he greatest weight change, because more water must pass across the potato cells semi permeable membrane by osmosis to achieve an equilibrium. The results from testing these hypotheses did not support either and were shown to be flawed because they did not reflect the theories of osmosis relating to surface area to volume ration and salt concentration.…

    • 3499 Words
    • 14 Pages
    Best Essays
    Read More
  • Satisfactory Essays

    Potato Osmosis Paper
    • 587 Words
    • 2 Pages

    Potato Osmosis Paper

    Once the potato was cut into a cube shape, it was placed into a container with water. Salt was then added to the excavated part of the potato. The potato was firm and had its natural color in the beginning of the experiment. Within the first hour the water turned light orange/pink in color. The exposed part of the potato also began to change color from its natural beige to light brown. The top part of the potato began to slightly lose its firm shape.…

    • 587 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Satisfactory Essays

    Osmosis Lab Response
    • 310 Words
    • 2 Pages

    Osmosis Lab Response

    As the concentration of a solute in water will, through osmosis, transfer until the concentration is nearly the same both inside the cell, or in this case potato, and outside of the cell, the potato strips both gained and lost mass due to the different concentrations of sugar in water. As expected, the potato strips placed in the concentration of sugar water closest to the concentration of sugar water in a potato had the least amount of change in mass. As the potato strips placed in substance Z and substance A both changed 7%, the concentration of sugar water in a potato must be somewhere in between a concentration of 0.4 and 0.6. One source of error for this lab is that the amount of substance placed into each Dixie cup was not measured and therefore were not consistent. If this lab were repeated, it is suggested that the amount of substance be measured in order to produce more consistent results.…

    • 310 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    | the Occurrence of Osmosis and Diffusion in Artificial and Living Cells
    • 3661 Words
    • 15 Pages

    | the Occurrence of Osmosis and Diffusion in Artificial and Living Cells

    This lab focuses on the understanding of osmosis and diffusion in a practical sense. It allows the conductor to see what factors affect diffusion and osmosis. This report was written to explain and present the results gathered in a precise and organized manner. This experiment was divided into two parts. The first part concentrated on the placing potato cylinders in different sucrose concentrations for a period of time. This part was conducted to see if the potato cylinders would gain weight or lose weight because of osmosis. The second part was conducted to see if a dialysis bag, filled with sodium sulfate and starch solution and placed in an albumin/glucose solution, would contain albumin/glucose from the outside or the albumin/glucose solution would contain any sodium sulfate/starch from the inside. The first part of this experiment there is a relationship between the amount of sucrose concentration and final mass. As the sucrose concentration increased the mass of the potatoes decreased. This is a result of the sucrose molecules not being small enough to pass into the membrane of the potato cylinders, but the water was able to change to a different concentration gradient. As the sucrose amount increased the free water molecules decreased, which as a result did not allow the water molecules to enter the potato cylinders. On the contrary, no diffusion of solutes occurred in part two of this experiment. Osmosis, on the other hand, did occur. Water moved into the dialysis bag, thus increasing the bag’s weight. Diffusion did not occur because of the size of the pores in the dialysis bag. The solute molecules were too…

    • 3661 Words
    • 15 Pages
    Better Essays
    Read More
  • Powerful Essays

    Potato Osmosis Lab
    • 3353 Words
    • 14 Pages

    Potato Osmosis Lab

    Aim To observe and measure the effect of osmosis on the mass of potato using a starch solution. Introduction In order to measure the effect of osmosis, eighteen pieces of potato were cut and placed in six groups, each group of three pieces cut to weigh as close as possible to one another. For each potato group, a test tube was half filled with a starch solution varying in concentration from 0% (water) to 1%. Hypothesis…

    • 3353 Words
    • 14 Pages
    Powerful Essays
    Read More
  • Good Essays

    vugj
    • 460 Words
    • 2 Pages

    vugj

    Hypothesis: If the solute inside the potato cell is significantly greater than that outside it, then water will enter the cell, causing it to gain weight. If the solute outside the potato cell is significantly greater than that inside it, then water will leave the cell, causing it to lose weight. If the amount of solute inside and outside of the cell is virtually equal, then there would be no net water movement causing the potato cell to remain the same weight.…

    • 460 Words
    • 2 Pages
    Good Essays
    Read More
  • Powerful Essays

    PotatoLabReport
    • 1275 Words
    • 6 Pages

    PotatoLabReport

    interior of the cell. The process by which water crosses membranes from region of high water concentration to regions of low water concentration is called Osmosis. Osmosis is the process whereby water moves across a cell membrane by diffusion. Diffusion takes place when the molecules of a substance tend to move from areas of higher concentration to areas of lower concentration. Cells must tightly control the process of osmosis otherwise they will die. Plants with too little water will wilt. This happens when water moves out of the cells by osmosis. Without this water there is little pressure inside the cell and the plant can no longer support itself against the pull of gravity.This experiment is to find out the water potential of potato cells . Water potential is the ability of water to move down gradient of water potential through partially permeable membrane until the gradient is constant.The purpose of this investigation is to see how a plant , in this case a potato , reacts to different concentrations of sucrose. Hypothesis:If we place potatoes in sucrose solutions then as the concentration goes up, the change in…

    • 1275 Words
    • 6 Pages
    Powerful Essays
    Read More
  • Good Essays

    Molarity of Surcose Solution Labreport ( Conclusion and Evaluation)
    • 840 Words
    • 4 Pages

    Molarity of Surcose Solution Labreport ( Conclusion and Evaluation)

    The research question that I asked myself before the experiment was “What is the osmotic potential of potato?” The answer I got after the experiment was that the osmotic potential of potato is very high because this experiment exactly showed what happened when there is Osmosis present and the following information will prove it. Our results greatly showed that there has been osmosis present. Osmosis is the diffusion of water through a partially permeable membrane from a region of lower solute concentration to a region of higher solute concentration. And the results we got shows that osmosis occurred in this experiment. In 0.0 mols of sucrose the mass of potato has increased so there has been diffusion of water from 0.0 mols of sucrose which is the lower concentration to 3.71 grams of potato which is the higher concentration. Also in 1.0 mols of sucrose the mass of potato has decreased and it should decrease when there is osmosis present because in this case 1.0 mols of sucrose is the higher concentration and the 3.58 grams of potato is the lower concentration. Basically the potato chips lose more mass in the higher concentrated solution and gain mass in the lower concentrated solution. From 0.0 mols of sucrose to 0.3 mols of sucrose there has been gain in mass for the potatoes. However from 0.4 mols of sucrose to 1.0 mols of sucrose there has been gain in mass for the potatoes. Also 0.3 mols of sucrose is the point where there has been almost no change or very little change in mass of potato. There has been no loss and gain in mass or very little change and gain mass. This means that at this point there concentration of the sucrose and potato are equal. As you can see from the graph that the gain of mass is very little compared to the loss of the mass and this proves that our prediction was right. We predicted that the cell or the potato cannot be very concentrated, because this would result in the cells filling up with water. The prediction was right…

    • 840 Words
    • 4 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Potato Osmosis Lab Report
    • 432 Words
    • 2 Pages

    Potato Osmosis Lab Report

    We started the lab by cutting the potato core length (44 mm). Each potato core are placed in test tubes. The test tubes have different salt concentration, test tube 1 has 0% salt concentration, test tube 2 has 0.625% salt concentration, test tube 3 has 1.25% salt concentration, test tube 4 has 2.5% salt concentration and test tube 5 has 5% salt concentration. The next day, we remove the potato core from the test tubes and measure their size. In test tube 1 with a 0% salt concentration, the potato core length after is 44 mm, the change in potato core length is 4 mm so the potato is hypertonic to that solution. In test tube 2 with a 0.625% salt concentration, the potato core length after is 42 mm, the change in potato length is 2 mm so the potato is hypertonic to that solution. In test tube 3 with a 1.25% salt concentration, the potato core length after is 39 mm, the change in potato length is -1 mm so the potato is…

    • 432 Words
    • 2 Pages
    Satisfactory Essays
    Read More

Related Topics