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

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). A cell membrane
lets smaller molecules such as water through but does not allow bigger
molecules to pass through. The smaller molecules will continue to
diffuse across the membrane until the area in which the molecules are
found reaches a state of equilibrium, meaning that the molecules are
in a steady state, with molecules moving in and out of the membrane,
however with no net loss or gain.

Plant cells always have a rigid cell wall and cell membrane
surrounding them. When they take up water by osmosis the cells start
to swell up, but the cell wall prevents them from bursting, (-which is
what animal cells, who have no cell walls would do), the plant cell is
then said to be turgid. When turgid, the pressure inside the cell
rises and eventually the internal pressure of the cell is so high that
no more water can enter the cell. This hydrostatic pressure works
against osmosis, even when the plant cell's water potential is greater
than that of the outsides. Turgidity is very important to plants
because this is what makes the plant "stand up" and acts as a form of
support.

The opposite of turgidity is plasmolysis, this is the retraction of
the cytoplasm from the wall of a vacuolated plant cell as a result of
osmotic withdrawal of water from the vacuole. They are said to become
flaccid and limp.

For this particular investigation we are allowed, a bench solution of
1 molar sucrose (-this will be the sugar solution) solution and potato
cylinders.

FAIR TEST

To find the effect of sucrose solution on osmosis, I will have to keep
all the other factors the same, these are:

-Temperature

-Water potential of potato initially

-Size of potato

-Mass of potato

-Volume of solution potato is in

-Type of potato

-Time left in solution

-Surface area of potato

-Using same balance to measure potato

-Light intensity

-Potato cut at the same time, and left the same time

If I am going to conduct a fair test then I will have to keep these
factors the same, this is so that I can achieve reliable results to
test out my hypothesis. The temperature will be at a constant room
temperature, this is so that it won't affect the rate of reaction, as
a higher the temperature the object is, the molecules inside it are
vibrating fast, so is the fact that at a hotter temperature osmosis
will happen faster, than at freezing temperatures, so...

Find Another Essay On Investigating the Effects of Sucrose Concentration on Osmosis in Potato Tissue

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

2249 words - 9 pages controlled using film secured on the top of each of the test tubes to prevent uneven loss of water from disturbing the experiment. The independent variable is the alteration of the concentration of the sucrose and distilled water in the solution that the potato will be suspended in. I will select different concentrations that will provide the most efficient results for me to observe the effects. Volume of sucrose

Biology Coursework: The effects of Osmosis on a potato chip in Sugar Solution

803 words - 3 pages Biology Coursework: Effect of Sugar Solution on Potato ChipsPlanningBefore planning the experiment, I will research osmosis, so that I can make predictions. This will help me to discover how to make this investigation fair and safe. Planning ahead will help me find out the order in which to carry out the experiment. This should lead me to good results at the end of the experiment.HypothesisOsmosis is the passage of water from a region of high

Rate of Osmosis Between Potato Cylinders and Sucrose Solution

3289 words - 13 pages Rate of Osmosis Between Potato Cylinders and Sucrose Solution Introduction I am doing an investigation, to find out on how varying one factor effects the rate of osmosis between potato cylinders and Sucrose solution. Osmosis is the diffusion of solvent (usually water) particles through a selectively permeable membrane from a region of high solvent concentration to a region of lower solvent concentration

Investigating the concentration of Glucose inside Cell sap in potatoes Through Osmosis

1813 words - 7 pages In the following experiment I will be investigating the concetration of glucose in the cell sap of a potato cell by weighing the samples of potato before and after soaking them in a concetrated glucose solution. I predict, that the stronger the solution of glucose, the more weight the piece of potato will lose, and when placed in a more dilute glucose solution, the potato will gain weight.This is due to Osmosis, the movement of water molecules

Biology Practical to study the Osmosis effects of Sucrose solutions of different Molarities upon Plant Cells (Chinese Radish and Potato Chips)

6662 words - 27 pages chip floats or sinks to the mass of a potato chip and the concentration of the solution it was in.Using the results recorded during the experiment, the cell sap sucrose concentration of each chip can be worked out.Overall, the experiment must be planned and osmosis in plants researched so as to predict what should happen in each of the situations presented in the method.The experiment taking place and recorded in the most accurate conditions

Investigating Osmosis Using Potato Cylinders

1105 words - 4 pages relative and that all cylinders have the same amount of time to OSMOSE, I will also try and make my potato cylinders as close in size as possible, this will further the relativity and congruence that I hope to achieve in my results. Because I am checking the affect of osmosis on the weight and size of potato cylinders I will keep the potato cylinder size the same but change the concentration of sugar in different solutions

Which Sugar Concentration Osmosis Best Takes Place on a Potato Chip

2635 words - 11 pages Which Sugar Concentration Osmosis Best Takes Place on a Potato Chip I am going to conduct an investigation to find out at which sugar concentration osmosis best takes place on a potato chip. Osmosis is defined as the net movement of water or any other solution with molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a

Effect of Concentration on Osmosis

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

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

How does the concentration of sucrose affect the weight

3364 words - 13 pages the prediction, we will be investigating the effect of different concentrations of sucrose on the weights of pieces of potato after osmosis has taken place and how much sucrose is in a potato. We will do this by finding the concentration that will have the least affect on the potato, the one that will have the least change in weight. If there is no change in weight then we can see that osmosis has not taken place and so this must mean that

Osmosis in Potato Cells

2992 words - 12 pages Osmosis in Potato Cells I am going to do an experiment to find the concentration of solute in potato cells. In order to find the best way to do this experiment I am going to do a preliminary test first. For my preliminary test I decided to use potato cylinders 3cm long and I would see if the cylinders increased or decreased in mass. I used salt solution in three different concentrates: 0.0M, 0.5M and 1.0M. I put

Similar Essays

"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 of osmosis and with a good understanding of molarity I should be able to determine the solute concentration of the vacuoles in potato tuber cells. As it would be impossible to measure with any degree of accuracy the expansion or contraction of cells on an individual basis I have decided to look at gain or loss of water in terms of increase or decrease in mass. Mass, I feel, will be a more accurate way of recording the change of the potatoes as

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

Investigate The Effect Of Varying Solution Concentration On Osmosis In A Potato Chip

4330 words - 17 pages Investigate the Effect of Varying Solution Concentration on Osmosis in a Potato Chip Prediction A definition of osmosis is: 'the movement of water molecules from an area of high water concentration to a low water concentration across a semi-permeable membrane' (Oxforddictionary 2000). In a high concentration of water the amount of solute (e.g. sugar) is low. These solutions are usually known as a dilute or weak solution. But in a low

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