Find the concentration of sucrose in a potato cell - Plan

Find the concentration of sucrose in a potato cell - Plan

Length: 817 words (2.3 double-spaced pages)

Rating: Excellent

Open Document

Essay Preview

More ↓
Find the concentration of sucrose in a potato cell - Plan

Plan For Osmosis/Plasmolysis Experiment

AIM

In this experiment, I am trying to find the concentration of sucrose
in a potato cell. Also I can observe when a cell is totally
plasmolyised.

PLAN

I plan to complete this experiment within an hour. Firstly, I will
cut 15 potato chips, 3 each for 5 different solutions, each weighing
1.2grams, cut with a 4mm corer to approx (full word) 4cm. I will measure
weight, as length is less accurate. The weight of the chip may vary as
much as 0.02 g each way, which will make it a lot easier to do, but may
provide me with less accurate results. I will use 5 different molar
solutions of 20 cm3 each, shown to the right. 0M (water), 0.5M, 1M, 1.5M
and 2M. I will create 0.5 molar solutions by mixing 10cm3 of water and
10cm3 of 1 molar solution. I will use 3 of each solution to ensure that
my results are correct, and to prevent any anomalies disturbing my result
graphs. One of each solution will be dropped into the solution at 10-second
intervals. They will be taken out 30 minutes after precisely, to
ensure a reliable result. They will then be dried on a paper towel,
and quickly weighed, and recorded in a pre-written table.

RELIABILITY/ FAIR TEST

I must control many variables in this test. I will control the time
that they are left in the solution, as this will greatly affect
results if they are left in for different amounts of time. Also I must
control how much I dry the chips before weighing them, because if I
leave some excess water on one of them, it will be an unfair test, as
ill be weighing the water as well as the chip. Another point is
simple, but just to make sure that the scales I am weighing the chip
on are at 0 before weighing the chip, as it may add some mass to the
chip. I will use 5 different solutions, starting at 0 molar and going
up in 0.5 molar concentrations. I have chosen this because they are
equidistant, allowing for easy graph drawing, and also because from
the preliminary experiment, I know that this will give me results that
can show me the concentration of sucrose in the cells sap, and also go
on to show me the concentration that the cell will plasmolyise at. I
will also control the variety of potato- I will only use 1 brand, as

How to Cite this Page

MLA Citation:
"Find the concentration of sucrose in a potato cell - Plan." 123HelpMe.com. 31 Mar 2020
    <https://www.123helpme.com/view.asp?id=46744>.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

The Effect of Changing the Concentration of Sucrose on the Movement of Water into a Potato

- The Effect of Changing the Concentration of Sucrose on the Movement of Water into a Potato Introduction Aim 1. To use different concentrations of sucrose solution to determine the internal concentration of the potato. 2. To use different concentrations of a solution more dilute than the internal concentration of the potato to find out what the effects of different sugar concentrations have on the movement of water into the potato. Theory ====== Osmosis is the movement of water from a dilute solution to a more concentrated solution, through a partially permeable membrane, until the concentrations are equal....   [tags: Biology Lab Report]

Free Essays
764 words (2.2 pages)

The Effect of Concentration of Sucrose Solution on Osmosis in Potato Tissue

- The Effect of Concentration of Sucrose Solution on Osmosis in Potato Tissue Aim:- To find the effect of varying external concentration of sucrose solution on osmosis in potato tissue. Variables:- J The concentration of the sucrose solution around the potato tissue. Depending on the concentration of the solution, osmosis will occur more or less. J The size and shape of the potato. The longer and wider the potato tissue, the larger the surface area, which means that more of the potato is exposed to the solution giving it more of a chance of osmosis occurring....   [tags: Papers]

Free Essays
837 words (2.4 pages)

Investigate how the Concentration of Sucrose Solution affects the Massof the Potato Chip

- Investigate how the Concentration of Sucrose Solution affects the Mass of the Potato Chip Aim To find out how the concentration of sucrose solution affects the mass of the potato chip left in the solution for one day. Water Potential: The water potential of a solution is a measure of whether it is likely to lose or gain water molecules from another solution. A dilute solution, with its high proportion of free water molecules, is said to have higher water potential than a concentrated solution, because water will flow from the dilute to the concentrated solution (from a high potential to a low potential)....   [tags: Biology Lab]

Research Papers
1771 words (5.1 pages)

Investigation of the Concentration and the Effect of Sucrose on Osmosis in Apple and Potato Tissues

- Investigation of the Concentration and the Effect of Sucrose on Osmosis in Apple and Potato Tissues INTRODUCTION: - I will be doing an investigation on the topic of Osmosis (A special type of diffusion). The aim of this experiment is to investigate the effect of sucrose concentration on osmosis in apple and potato tissues, to find out how the concentration of sucrose solution affects the mass of potato and apple strips. So therefore to find out about the uptake of water into a cell which depends on two main factors, which are: - Ø The water concentration of the solution Ø The water concentration of the cell sap in the vacuole....   [tags: Papers]

Free Essays
1291 words (3.7 pages)

Find out what affect the change of concentration in the sucrose solution

- Find out what affect the change of concentration in the sucrose solution has on the mass of a potato chip. Introduction In this experiment I will be taking five similar potato chips and putting them into different sucrose solutions (each one with a different concentration) and observing the effect that each concentration has on the size of the potato chip. Aim I am doing this investigation in an endeavour to find out what affect the change of concentration in the sucrose solution has on the mass of a potato chip....   [tags: GCSE Biology A2 A-Level Coursework]

Free Essays
670 words (1.9 pages)

Investigating the Concentration of Sucrose in Cells of Carrots and Potatoes

- Investigating the Concentration of Sucrose in Cells of Carrots and Potatoes Plan Introduction Osmosis is defined as 'the net movement of water molecules from a region of high water concentration to a region of lower water concentration through a partially permeable membrane'. In my experiment the process of osmosis will be due to the concentration of sucrose inside the cell compared to outside. Therefore if there is a higher concentration of sucrose molecules outside the cell then the net movement of water molecules will be out of the cell and similarly if there is a higher concentration of sucrose molecules inside the cell then the net movement of water...   [tags: Papers]

Free Essays
2785 words (8 pages)

Investigating the Effects of Sucrose Concentration on Osmosis in Potato Tissue

- 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....   [tags: Papers]

Research Papers
1529 words (4.4 pages)

The Effect of Sucrose Solution Concentration on Osmosis in Potato Chips Essay

- The Effect of Sucrose Solution Concentration on Osmosis in Potato Chips Plan I am going to cut six pieces of potato using a borer. They will all the same weight. I will make them all 0.7g. I will be able to make sure they are all the same weight-using scales. If a piece of potato is too big I will use a scalpel and a tile to trim it so they are all the same weight and then place these into a test tube each. I will hold the test tubes in a test tube rack. Using the measuring cylinder I will measure 10ml of each strength of sugar solution rinsing the measuring cylinder after each measure....   [tags: Papers]

Free Essays
681 words (1.9 pages)

The Solute Concentration of a Potato Essay examples

- The Solute Concentration of a Potato To find out what the solute concentration of a potato is, this shall be done by finding out the effect of Osmosis on a potato. Prediction: That if there is more water outside the potato than inside, the potato will increase in size. If however there is less water outside the potato than within, then I shall expect the potato to shrink in size. I think this because of the laws of Osmosis. Osmosis is the diffusion of water through a partially permeable membrane from a high concentration gradient, to a low concentration gradient....   [tags: Papers]

Free Essays
649 words (1.9 pages)

Essay on The Effects of Sucrose Molarity on Cells in the Stem Tuber of a Potato

- The Effects of Sucrose Molarity on Cells in the Stem Tuber of a Potato Planning In this investigation I am trying to find out what molarity of sucrose solution is same as the molarity of sucrose in the cells of a potato. In this experiment I am going to change the molarity of the sucrose solution out the cells of potato. I predict that if the molarity of sucrose solution outside the cells is isotonic to the molarity of the sucrose inside the cells then there will be no change in weight of the potato disks....   [tags: Papers]

Free Essays
893 words (2.6 pages)

Related Searches

different brands and types may have different concentrations of
sucrose in their cells. . Also all solutions will be measured in
beakers to 20 cm3, as if there was a higher volume in one solution, it
would take longer to fully even out. My results will be quite reliable
if I control the points above, and any anomalies will be identified.

SAFETY

There are no points concerning safety, as it involves only sucrose
solutions. However I must take care not to drop wet test tubes.

EQUIPMENT

We will use the following equipment in our experiment:

· 3 same branded potatoes

· Scales accurate to 2d.p

· 4mm diameter corer

· 3 test tube racks

· 15 test tubes

· Distilled Water

· Measuring beakers with maximum of 10cm3 intervals.

· 1molar and 2 molar sugar solutions (also used to mix the 0.5 molar
and 1.5 molar solutions.)

· 2 Pipettes

· And some paper towel

Preliminary study

I carried out a preliminary experiment to decide on all of the above
specifications. I tried using 3 chips in each solution, and I used 3
different solutions. I left them in there for 15 minutes, which
provided us with odd results that are show below. As you can see, the
results graph is completely wrong. It suggests that the concentration
of sucrose in the less sap is less than water, which is stupid, as all
potatoes contain some sucrose, as if it didn’t, it wouldn’t have
grown. These results cannot tell me much, as they do not follow what
you would expect.

15 MINS. 1.6g CHIP O MOLAR 1 MOLAR 2 MOLAR

CHIP A 1.6g 1.36g 1.31g
CHIP B 1.59g 1.41g 1.33g
CHIP C 1.59g 1.40g 1.32g
AVERAGE 1.593 1.39 1.32
AVERAGE CHANGE -0.44% -13.13% -17.50%

Prediction

My prediction above is in a slight ‘s’ curve, which is based on the
test A of my preliminary. Test A seemed to be the most logical to
choose as it followed the patterns that I would expect it to. As we
can see from it, the water solution increases its weight, and it shows
that the cells concentration is , as this is where it
crosses the x-axis. And also it shows us that the cell is fully
plasmoliesed at around . this is because the graph starts to level off
and that means that the chip is not losing any more weight, because the
cell is fully plasmolyised.
Return to 123HelpMe.com