When placed in a hypotonic solution, the concentration inside the cell (low water, high solute (cytoplasm)) is greater than outside (high water, low solute), so water will enter the cell in an attempt to equalize the concentration. This will cause the cell to swell and possibly burst.
cell walls rupture
both the cell will swell and rbc will burst easily while cells of onion peal will resist the bursting to some extenct
In a hypotonic environment, an onion cell will fill up with water. Hypotonic refers to a solution that has lower osmotic pressure than the solution you're comparing it to.
Osmosis takes place. The onion cell will turn flaccid due to the water loss.
This depends on the nature of the NaCl solution...If it is a Hyper-tonic solution (More concentrated solution than onion cells), water will move by osmosis down it's concentration gradient, from a region of less negative water potential (high Ψ) in the onion cell, to a region of more negative water potential (low Ψ) in the solution through a selectively/partially permeable membrane;so the onion cell will be plasmolysed and will look "flaccid" (vacuole gets smaller and shrinks).The vice versa happens with a Hypo-tonic (less concentrated solution than onion cell) NaCl solution;The onion cell will then look "turgid" (has a large vacuole exerting a pressure on the cytoplasm and pushing it towards the cell's cellwall to make it "tensed".
I did this experiment and after a while the onion cell became incredibly easier to see.
When salt is added to onion cell, the cytoplasm shrink due to plasmolysis. When water is added to onion cell, the cytoplasm expands back to its initial shape due to deplasmolysis.
an onion cell stores foodThe epidermis is the outermost layer of the skin, it acts as the body's major barrier against the environment. It is the thinnest on the eyelids at and the thickest on the palms.
A hypertoinic environment to human cells means there is more water and less solute inside the cell. Thus water will move out of the cell because the of the concentration gradient. The cell will shrivel and die.
It will then be in an isotonic/isosmotic environment, and nothing will happen to the cell.
describe onion cell
Water will leave the cell by facilitated diffusion and the cell will shrink and die.