What is the percentage of water inside the cell in tap water?
Elodea cells normally contain 1% salt and 99% water on the inside. Tap water used in this investigation contains 1% salt and 99% water. Salt water used in this investigation contains 6% salt and 94% water. Salt water has a higher concentration of salt than fresh water of Elodea cells.
Where are the chloroplasts located within the Elodea cell?
They may notice that the chloroplasts of many cells are located along the inner cell wall. This is because a large vacuole occupies the central portion of the cell and tightly presses the cytoplasm against the cell wall.
What process caused the difference in the appearance between the Elodea cells in deionized water and those exposed to the 20% saline solution?
the process that caused the difference in appearance between the elodea cells in deionized water and those exposed to the 20% saline solution was osmosis.
What is the percentage of water outside the cell?
Water is present both inside and outside cells. In the body of a mammal for example although it is about 70% water by weight, about 46% (approximately 2/3) is inside cells, and about 23% (approx. 1/3) is present outside cells in blood plasma and other body fluids.
How did the cells change when salt solution was added to the wet mount?
What happens to the cells as the salt water flows under the cover slip? The salt water is a hypertonic solution, thus water will move out of the cell. As water moves out of the cells there is a loss of turgor pressure and the plasma membranes detach from the cell walls as the cells shrink.
Will osmosis occur?
Osmosis occurs until the concentration gradient of water goes to zero or until the hydrostatic pressure of the water balances the osmotic pressure. Osmosis occurs when there is a concentration gradient of a solute within a solution, but the membrane does not allow diffusion of the solute.
Where is chloroplast located in a plant?
leaf mesophyll
In plants, chloroplasts are concentrated particularly in the parenchyma cells of the leaf mesophyll (the internal cell layers of a leaf).
Where is chloroplast located in a cell?
mesophyll
Chloroplasts are found in all higher plants. It is oval or biconvex, found within the mesophyll of the plant cell. The size of the chloroplast usually varies between 4-6 µm in diameter and 1-3 µm in thickness. They are double-membrane organelle with the presence of outer, inner and intermembrane space.
What happens to chloroplasts in 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. Chloroplasts that were found near the edge of the cell wall will collapse into the center of the cell because the vacuole is empty.
What happens when a plant cell is placed into water?
Plant cells placed in a solution with a high water concentration compared to their contents (eg pure water) will gain water by osmosis and swell up until their cytoplasm and cell membrane are pushing against their cell wall. They are said to be turgid .
When the concentration of water inside a cell is greater than the concentration of water outside the cell water moves?
Osmosis is the net movement of water across a selectively permeable membrane driven by a difference in solute concentrations on the two sides of the membrane.
What happens when there is a lower concentration of water inside the cell than outside the cell?
If a cell is placed in a hypotonic solution, there will be a net flow of water into the cell, and the cell will gain volume. If the solute concentration outside the cell is lower than inside the cell, and the solutes cannot cross the membrane, then that solution is hypotonic to the cell.