Osmosis: Cell Wall and Salt Water Solution Essay Sample

Diffusion is when substances spread throughout a liquid or a gas ( high to low ) . Osmosis is the diffusion of H2O through a selectively permeable membrane ( a type of diffusion ) . In works cells it is besides referred to as plasmolysis. Plasmolysis affects the cells ability to work decently ( homeostasis ) . Plant cells are homeostatic when their cardinal vacuole is filled with H2O. Surrounding a works cell are two beds called the cell wall and the cell membrane. Plant cells respond to the solutions environing their membrane. The two parts of a solution are the dissolver and the solute.

The solution that surrounds the works cell is either a hypotonic solution or a hypertonic solution. Hypertonic solutions cause the works cell to shrivel when exposed to it. Hypotonic solution is the opposite and causes the works cell to swell up. In works cells they don’t burst when exposed to hypotonic solutions because of the cell wall. Hypothesis: If 10 % salt H2O solution effects Elodea leaves so the cell of the works will shrivel in the salt H2O solution. Materials:

Elodea leavesmicroscope10 % salt solution
Microscope slidesdistilled waterpaper towel
Coverslipstap waterdigital camera
Procedure: Please see lab press release.

Datas:
Elodea densa
Fresh Water
Magnification- 400x
Elodea densa
Fresh Water
Magnification- 400x

Cell membrane
Cell membrane
Chloroplast
Chloroplast
Cell wall
Cell wall

Elodea densa
Salt H2O
Magnification– 400x
Elodea densa
Salt H2O
Magnification– 400x

Cell membrane
Cell membrane

Cell wall
Cell wall

Chloroplast
Chloroplast

Decision:
If 10 % salt H2O solution effects Elodea leaves so the cell of the works will shrivel in the salt H2O solution. The hypothesis was supported. This is because if you look at the images in the information it shows the cell shriveling when salt H2O was added to the foliage. When regular H2O was added to the Elodea densa foliage you could see more chloroplast so when there was salt H2O added. This is because the salt H2O solution is hypertonic. The consequence of puting an Elodea cell in a hypertonic solution is the cell to shrivel ; all the cell organs and parts in the cell so go closer together because of the shrinkage cell. When the Elodea cells were exposed to condense H2O it showed the chloroplast distributing back out every bit good as the cell swelling because distilled H2O is a hypotonic solution. The Elodea cells were the most bombastic with the regular H2O solution and the distilled H2O solution.

When the in a produce subdivision of a supermarket many veggies on show are spray down automatically with H2O. The consequence on this is that it keeps the veggies fresh and delectable to eat. If barm was besides used in this experiment it likely would hold had the same consequence because it has a cell wall. Because ruddy blood cells aren’t works cells they do non hold a cell wall. There for they would split unlike a works cell. When a ruddy blood cell is exposed to a hypertonic environment the H2O flows out of the cell. This causes them to shrivel and prostration. doing a peaky visual aspect. When the ruddy blood cell is exposed to a hypotonic environment the H2O rushes into the cell doing it to swell. They become so conceited that a batch of them rupture or explosion.