How did the Elodea demonstrate plasmolysis?
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 a plant cell during plasmolysis?
Plasmolysis is a typical response of plant cells exposed to hyperosmotic stress. The loss of turgor causes the violent detachment of the living protoplast from the cell wall. The plasmolytic process is mainly driven by the vacuole. Plasmolysis is reversible (deplasmolysis) and characteristic to living plant cells.
What do you think would happen to the cells if we put the Elodea in a distilled water solution?
This picture shows normal Elodea. 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.
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.
When Elodea are placed in a hypertonic environment plasmolysis will occur this means that quizlet?
Terms in this set (9) They will undergo “plasmolysis”. Because the NaCl solution is very hypertonic to the cells, water will undergo a net movement OUT of the cell, and the cell will shrivel and pull away from the cell wall. What happens to Elodea plant cells when they are flooded with DI (distilled) water?
What prevents the elodea cells from completely collapsing?
The tough cell wall, made of cellulose and pectin, keeps the cells from bursting under the pressure.
What structures are only in the Elodea cell?
This Elodea leaf cell exemplifies a typical plant cell. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. The numerous green chloroplasts allow the cell to make its own food (by photosynthesis). The central vacuole takes up most of the volume of the cell.
What structures of Elodea cells are unique to plants?
The elodea cell will have a central vacuole in addition to chloroplasts. Plant cells also have a cell wall which is not a structure found in animal cells.
When Elodea are placed in a hypertonic environment plasmolysis will occur this means that?
If a plant cell is placed in a hypertonic solution, the plant cell loses water and hence turgor pressure by plasmolysis: pressure decreases to the point where the protoplasm of the cell peels away from the cell wall, leaving gaps between the cell wall and the membrane and making the plant cell shrink and crumple.
What is your strategy I will place Elodea?
Strategy: I will place Elodea into solutions with different tonicities and I will examine the appearance of the cells under a microscope to see if the cells change. Conclusion: Due to the hypertonic solution, water is leaving the cell.