How can osmosis be observed in a plant cell?
How can osmosis be observed in a plant cell?
If a plant cell is surrounded by a solution that contains a lower concentration of water molecules than the solution inside the plant cell, water will leave the cell by osmosis and the plant cell will become flaccid (soft).
What did you observe when the Elodea cells were exposed to salt water?
When the Elodea was placed in the salt solution, the vacuoles disappeared and the protoplasm came away from the cell wall making the organelles appear to be clumped in the middle of the cell. Such cells are said to be plasmolyzed.
What happens to an Elodea leaf in a hypotonic solution?
Thus, a hypotonic solution has more water than the cell and water has a tendency to move (diffuse) into the cell. 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.
What did you observe on the Elodea leaves?
The elodea like all green plants uses the process of photosynthesis to produce organic energy molecules. Oxygen is a by product of the process of photosynthesis. Oxygen can be observed leaving the elodea cells. Under a microscope the green chloroplasts inside of the cell can be observed.
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 was the appearance of the Elodea cells in hypertonic solution?
What was the appearance of the Elodea cells in hypertonic solution? The cell membrane shriveled and pulled away from the cell wall.
What happened to the Elodea or water sprite cells placed in salt water?
Images of elodea Cells in an isotonic solution (fresh water) and in a hypertonic solution (salt water). Notes: Most students will understand that salt will cause the cell to shrink, what is surprising is that the cell itself does not get smaller, but the vacuole gets smaller.
What happened with Elodea the plant in hypertonic solution?
Elodea cells, when placed in a hypertonic solution, will lose water through osmosis. This will make them flaccid. The central vacuole reduces and eventually disappears. The cell membrane pulls away from the cell wall and the organelles appear concentrated at the center of the cell.
What happens if you put an Elodea in hypertonic solution?
Plant cells placed in a hypertonic solution will undergo plasmolysis, a condition where the plasma membrane pulls away from the cell wall as the cell shrinks. The cell wall is rigid and does not shrink. The Elodea cells have been placed in a 10% NaCl solution.
What was the appearance of the Elodea cells in hypotonic solution?
What was the appearance of the Elodea cells in hypotonic solution? The cell membrane was pressed against the cell wall, and the cell was almost bursting.
What sort of movement can be observed in the leaf cells of Elodea when observed under the light microscope?
One of the fun things to observe using a light microscope is the movement of chloroplasts around the cell, especially in the plant Elodea. This movement is referred to as cyclosis or cytoplasmic streaming.