This website uses cookies to ensure you have the best experience. Learn more

Lab Report: Concentration Of Sucrose Affect On Osmosis

1499 words - 6 pages

Osmosis

Aim:

To investigate how the concentration of sucrose affects osmosis in plants.

Introduction:

I will be investigating how the concentration of sucrose affects osmosis in plants.
The variables I could change would be the temperature of the solution. The higher the temperature of the solution the more osmosis would occur. The surface area of the potato strip, the larger the surface area the more osmosis would occur as there would be more area exposed for osmosis to take place. The concentration of the solution will affect osmosis, the higher the concentration the less osmosis would take place. The duration of the experiment also affects how much water is gained/lost by osmosis as the longer the duration is, the more osmosis would take place (osmosis would stop as soon as it reaches an equilibrium of water content inside and outside the cell.

I will only change the concentration of the solution as my aim is to find out how the concentration of sucrose solution affects osmosis.

To make it a fair test I will test each concentration three times and use the average. My tests will be accurate as I will be using a very accurate scale and precise syringes. To make my experiment accurate I will be using distilled water to make my sucrose solutions so there are no impurities that may affect my experiment and I will also measure my results to two decimal places. To make my experiment safe I will use goggles.

Scientific Knowledge

Osmosis is the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration. Osmosis is used to transfer water between different parts of plants. Osmosis is vitally important to plants. Plants gain water by osmosis through their roots, and it is osmosis that moves water into plant cells, making them turgid or stiff, and thus able to hold the plant upright.

The temperature affects osmosis, the warmer it is, the more osmosis will take place but if it is too hot it will have the reverse effect and the plant will loose water through osmosis. The surface area also affects osmosis as the larger the surface area the faster the plant can diffuse water into its cell.
(from Biology-New Edition by Jean Martin)

The concentration of the solution the potato strips will be put in affects the rate of osmosis as if the solution is sugar rich, it will have less water content. The lower the water content the water would be absorbed by osmosis. When there is more water content in the cell than in the solution the cell would loose water through osmosis. I will be using plant cells to observe osmosis as if I was to use animal cells, they would burst as when they absorb water as they don?t have a cell wall.
Preliminary Work

To see if the concentration of sucrose affected the rate of osmosis I did a preliminary test of 0% sucrose and 20% sucrose.

% sucrose concentration Mass of potato strip before (g) Mass of...

Find Another Essay On Lab Report: Concentration of Sucrose Affect on Osmosis

Effect of Concentration on Osmosis Essay

2617 words - 10 pages Effect of Concentration on Osmosis Aim To find out how the concentration of sucrose solution affects the mass of the potato chip left in the solution for one day. Prediction I predict that when the sucrose concentration is low the potato chip will gain mass. This is because there will be a higher sucrose concentration in the potato chip so water will go into the potato from the solution. I predict that when there is a high

Rate of Osmosis Between Potato Cylinders and Sucrose Solution

3289 words - 13 pages molecules because it takes more energy to get the larger molecule moving. Other factors include any charges on the molecule (positive or negative) and the nature of the material that the molecules are moving through. Concentration of sucrose solution has to be kept constant throughout the experiment (kept at 1 molar). If the concentration is lowered, there would be a major affect on the rate of osmosis. This effect

Osmosis lab/ concentrations of solutions effect on potatoes mass

1422 words - 6 pages "Do different concentrations of solutions determine the mass of a potato?"Introduction:The way to get the full results of this lab was through the process of osmosis. Osmosis is the movement of water across a membrane into a more concentrated solution to reach an equilibrium. When regarding cells osmosis has three different terms that are used to describe their concentration. The first of these words is isotonic. Cells in an isotonic solution

Investigating the affect of concentration on the rate of reaction

1168 words - 5 pages Investigating the affect of concentration on the rate of reactionIntroduction:This investigates how the rate of a chemical reaction depends on the concentration of reactants in the solution. This will be investigated with the following experiment in which dilute hydrochloric acid and sodium thiosulphate solutions are mixed. This forms insoluble sulphur and the mixture gradually becomes cloudy.If the concentration of the sodium thiosulphate

Investigate the Effect of Varying Solution Concentration on Osmosis in a Potato Chip

4330 words - 17 pages with the potatoes my hands were clean and dry. This was to prevent contamination and made sure that I did not pass on any extra water or sucrose onto the potato chips as this would affect the accuracy of my results. Results ------------------------------------------------------------------------------- 0.1 molar concentration mass before (g) mass after (g) change in mass (g) attempt 1 0.68 0.82

To investigate how concentration effects osmosis on potato chips

6593 words - 26 pages SCIENCE COURSEWORKAim: To investigate how concentration effects osmosis on potatochips.Introduction:I have been asked to investigate the effect of osmosis on potato chips. Osmosis is the diffusion of water from a lower concentration of solute to a higher concentration of solute, through a membrane.I have chosen to investigate the effect of the water potential/concentration of solution on potato chips. This means that I will put potato chips into

The effect of osmosis in potato cells with different concentrations of sucrose solution

2249 words - 9 pages area of low concentration, until both sides are equal (have reached equilibrium). Knowing that osmosis will occur across a partially permeable membrane whenever there is a difference between the water concentrations on the two sides of the membrane, and knowing that when this happens to cells they will either become turgid if water flows into them, or flaccid if water flows out of them, and thus change their volume, we want to test the

Which Sugar Concentration Osmosis Best Takes Place on a Potato Chip

2635 words - 11 pages solution and a potato chip of a given mass. Variables: Variables are the things that we are going to change during the investigation, and are things which will affect the experiment on the whole. One of the variables will be the concentration of sugar in the solution. This will have a big impact on the experiment as different concentrations of sucrose will affect the potato chips in different ways. For the purpose of my

Biology Lab Report on the Effects of Photosynthesis

1275 words - 5 pages , Lugol's iodine solution in dropper bottles, 250-mL beakers, 100-mL beakers, tongs, foreceps, Petri dishes, glass-marking pencil, 70% alcoholMethodPART I - Effects Of Light And Dark On Starch FormationThe leaves used for Part I are completely green. A few of these leaves have been entirely and partially covered with black paper two days before the lab. Then the plant was exposed to good light during the day.1. With a glass-marking pencil, label one

College lab report on enzymes

1306 words - 5 pages concentration for each tube.2. Effect of pH on Enzyme Activity:- We set up our stations with seven test tubes measuring each test tube at 4cm, 5cm, and 6cm, from the bottom. We identified each test tube, with the numbers 2, 4, 6, 7, 10, and 12, since we felt that the test tubes should correlate with the pH solution being used.- We fill each test tube with the following: 4cm of the pH solutions 2 through 12. We then filled the same test tubes with 1cm of

Lab Report On Sensory Threshold

1041 words - 4 pages Lab report on Sensory Threshold In this lab the purpose is to test the sensory threshold of a human body. To say it in terms that are easier to understand, we are testing how accurate certain points are on a body with response to touch. We are using three points on the body, the forearm, palm, and index finger. With these three points we will be testing to see how sensitive each point on the body is by measuring the distance of which we can feel

Similar Essays

Investigating The Effects Of Sucrose Concentration On Osmosis In Potato Tissue

2405 words - 10 pages Investigating the Effects of Sucrose Concentration on Osmosis in Potato Tissue PLANNING ======== We have been asked to research the effects of sucrose concentration on osmosis in potato tissue. Osmosis is the spontaneous movement of a solvent (-in this case water) from a place where its chemical potential is higher to another place where it is lower, through a semi-permeable membrane (-such as a cell membrane

How Does The Concentration Of Sucrose Affect The Weight

3364 words - 13 pages How does the concentration of sucrose affect the weight of pieces of potato after osmosis has taken place? Aim The aim of this is experiment is to investigate how much sucrose is in a potato. We are going to investigate the effect of different concentrations of sucrose on the weights of pieces of potato after osmosis has taken place. Prediction I predict that the less concentrated the solution of sucrose is, the greater the

"Experiment To Investigate The Effect Of Osmosis In Potatoes" A Gcse Experiment Looking At The Effects Of The Concentration Of Sucrose Solution On Osmosis In Potato Tubers

2796 words - 11 pages high water concentration to regions of low water concentration. The diagram below illustrates this:Water can freely penetrate all membrane. The cellulose cell wall does not act as a semi permeable membrane and will allow most substances that are dissolved in water to freely pass through it.Whether water enters the cell by osmosis or not will depend on the balance between external and internal solute concentrations and the state of the cell. If the

Lab Report: Osmosis

4385 words - 18 pages sugar solution I am going to use the same volume of sugar solution (30ml) in each experiment. If one experiment has a bigger volume than the others then more or less osmosis can occur, depending on the concentration. I will use this volume of solution as it will be enough to cover the potato cylinders comfortably. If the ratio is too unequal the reaction will be too slow or not work at all. Measuring cylinder I will measure the volume of