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The potato is made up of tiny, living units called cells.



THEORETICAL BACKGROUND:

If a sample of tissues immersed in solution of varying water potential
(concentration of water molecules), the cells will loose or gain water
by osmosis.



If the cell is put into solution of lower water potential (hypertonic
solution) the water will go out of cell and cell will be plasmolysed.

Table 3. Data for Experiment Estimating Osmolarity by Change in Volume
Photo provided by Flickr

I found that in both cases the mass of the potato cell reduces.

As more and more of the cells lost water, the slice of potato became soft and flexible.
Photo provided by Flickr

With this statement my hypothesis is that the mass
of the potato cylinders will decrease because the concentration of the
sugar solution outside the potato cell is higher than the one inside
the .

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....

Water Potential of Potato Tuber Cells :: Lab Report

Therefore osmosis takes place and the water inside
the potato cell that has a lower concentration diffuses out of the
potato cell through the partially permeable membrane thus making the
cell flaccid.

This is because of osmosis - water diffusing in and out of the potato tissue cells....
Photo provided by Flickr

In addition, it has been shown that micro-molar levels of aluminium reduce 3H-thymidine incorporation in a transformed cell line (UMR 106-01) by impeding the cell cycle progression (Blair et al., 1989).

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Using Sucrose Solutions to Determine Osmolarity of Potato Tubers ..


Effect of Sucrose Molarity on Potato Tuber ..

weekly Degeneration of the nerve cell at 29 and 43 mg Al/kg body weight per day aluminium sulfate and potassium aluminium sulfate, respectively, which was more severe at higher doses.

In this experiment we estimated the osmolarity of potato tuber ..




Justification of the Hypothesis

I am sure that what I said in my hypothesis is correct because if
there was no sugar solution and only distilled water, the cells of the
potato will become turgid as the water diffuses into the cells.

FODMAPs: Could common foods be harming ..

If the amount of water particles is higher outside than
inside the potato cells then the water molecules will diffuse into the
cell making it turgid and thus the mass will increase.

Aluminium (EHC 194, 1997) - INCHEM

With this statement my hypothesis is that the mass
of the potato cylinders will decrease because the concentration of the
sugar solution outside the potato cell is higher than the one inside
the potato cells.

dale doble click a las fotos para verlas en tamaño real.




Justification of hypothesis: -

I am sure that my hypothesis is correct because if there was no sugar
solution and only distilled water, the cells of the potato will become
turgid as the water diffuses into the cells.

Statistical Techniques | Statistical Mechanics

(1994), who reported that zinc is a much more potent metallic ion aggregator of native œ-protein than aluminium, being active at low micromolar concentrations.

Search the history of over 310 billion web pages on the Internet.

If the amount of water particles is higher outside than
inside the potato cells then the water molecules will diffuse into the
cell making it turgid.

Full text of "NEW" - Internet Archive

An investigation into Plasmolysis in onion cells was undertaken prior to this experiment, in order to gain some knowledge of osmosis to enable a hypothesis to be formed.

Biology Lab - Estimating Osmolarity by Change in …



HYPOTHESIS:

When cells are put in a solution with a different water potential than
inside of them, cells will gain or loose water.

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