Why do we need to put a drop of distilled water in preparing the slide of elodea SP Leaf? The chloroplasts are spread throughout the cell both before the salt solution, and after the distilled water is put onto the slide. Distilled water represents a hypotonic solution, yet the cells do not burst because of the cell wall.
Why do we need to put a drop of distilled water?
Why do we need to put a drop of distilled water in preparing the slide of elodea SP Leaf? The chloroplasts are spread throughout the cell both before the salt solution, and after the distilled water is put onto the slide. Distilled water represents a hypotonic solution, yet the cells do not burst because of the cell wall.
How do you mount an Elodea plant?
Prepare a wet mount of an Elodea leaf with tap water. To do this, place a drop of water towards one end of the slide. Using forceps, remove a small leaf from the tip of an Elodea plant and lay it flat in the drop of water.
How do you put a plant in a drop of water?
Using forceps, remove a small leaf from the tip of an Elodea plant and lay it flat in the drop of water. Cover with a cover slip. Similarly, what happens when you put a plant cell in distilled water?
What happened to the Elodea cells when you added distilled water to the slide vs the 10% NaCl?
The hypertonic 10% NaCl solution produced the shrunken Elodea cells as the water left the vacuole and the hypotonic distilled water solution produced the swollen Elodea cells as the water filled the vacuole. Crenation happens in animal cells.
What effect does water have on Elodea cells?
Placing Elodea cells into 100% water, which is more hypotonic than freshwater, also causes water movement into of the cells resulting in the swelling of the cells. In plants the outward pressure of the water produces rigidity of the cell, as the plasma membranes are pushed against the cell walls.
What happens to plant cells in distilled water?
Therefore, in distilled water the solvent diffuses through the cell membrane from the area of lower concentration (outside) to the area of higher concentration (inside). This is osmosis again and the plant cell absorbs water to the point where it can absorb no more.
What would happen to a cell placed in salt water distilled water?
Salt water is a hypertonic solution in comparison to the internal cellular liquid, since there are more solute particles outside in the salt water than inside in the cytoplasm. This means that water will move out of the cells by osmosis due to the concentration gradient, and the cells will become shrivelled.
When the Elodea leaf was put in distilled water what did you see under the microscope?
When the Elodea leaf was put in distilled water, what did you see under the microscope? The cell looked enlarged. When the Elodea leaf was exposed to 0.85% saline (physiological saline), what happened to the leaf? There was no effect on the leaf.
Why do cells in distilled water look different to cells in salt solution?
Contrastingly, when the plant cells are placed in distilled water, the concentration of water molecules is greater out of the cell than it is in the cell and therefore water moves into the cell by osmosis down the concentration gradient.
Why do plant cells not burst when placed in distilled water?
As the plant cell is placed in distilled water then the movement of water occurs inside the cell by osmosis, the cell becomes turgid. The pressure exerted by the cell wall prevents the cell from bursting.
When a plant cell is placed in distilled water it doe not burst Which of the following best explains this observation?
So, the correct answer is 'Cells wall is rigid and does not get overstretched'
What happens when red blood cell is placed in distilled water?
The distilled water outside the red blood cell, since it is 100% water and no salt, is hypotonic (it contains less salt than the red blood cell) to the red blood cell. The red blood cell will gain water, swell ad then burst. The bursting of the red blood cell is called hemolysis.
What happens when you add salt water to an Elodea leaf?
When the salt solution is added, the salt ions outside the cell membrane cause the water molecules to leave the cell through the cell membrane causing it to shrink into a blob in the centre of the cell wall. The movement of water molecules is called osmosis.
What effect does adding solute to distilled water have on its solute potential on its water potential?
If the solute concentration of a solution increases, the potential for the water in that solution to undergo osmosis decreases. Therefore, the more solute that is added to a solution, the more negative its osmotic (solute) potential gets.
What happens to an animal cell when it is placed in distilled water?
Distilled water is a hypotonic solution. When an animal cell is kept in distilled water, i.e. in the hypotonic solution for a longer time, the water will move into the cell by the process of endosmosis, which will cause swelling of the cell.