Question: What Happens To Elodea Cells In Saltwater?

What happens if you put a cell in salt water?

Seawater is hypertonic.

If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ).

So if you get thirsty at the beach drinking seawater makes you even more dehydrated..

Could elodea or paramecium from a freshwater lake be expected to survive if transplanted into the ocean?

Elodea or Paramecium from a freshwater lake is not expected to survive is not expected to survive in an ocean. … Ocean water will be hypertonic (higher salt solute concentration) compared to Elodea or Paramecium. Thus, the water molecules will move from Elodea or Paramecium into the surrounding.

What happens to chloroplasts inside elodea cells?

Chloroplasts do move in a cell. Observing chloroplasts in movement in an elodea cell is like watching a busy, bustling mass of pedestrians from a building high above. … The motion is common to the interior of cells and is called cyclonic or cytoplasmic streaming.

What would happen if these cells were allowed to remain in the salt solution for several hours?

what would you expect to happen if these cells were allowed to remain in the salt solution for several hours? we could expect even more to happen if these cell structure b/c it was left in longer than the elodea leaf that was only in the hypertonic solution for ten minutes.

Why do elodea cells shrink in salt water?

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 happens to the elodea cells in a 20% sucrose solution?

This is because water will be drawn out of the vacuole through osmosis, the protoplast will shrink, and the plasma membrane will actually pull away from the cell wall (plasmolysis), resulting in a loss of turgor pressure. The following image shows an Elodea leaf that was placed in a 20% sucrose (sugar) solution.

What prevents elodea cells from completely collapsing?

The tough cell wall, made of cellulose and pectin, keeps the cells from bursting under the pressure. You can easily see this in action, by picking any plant. When you have first picked it, you can hold it up and see that it stays upright in your hand.

Does salt kill cells?

Salt Sucks, Cells Swell The loss of water from this movement causes plant cells to shrink and wilt. This is why salt can kill plants; it leaches the water from the cells.

What will happen if a healthy red blood cell is placed into a container of sea water?

A cell placed in a salt solution. This cell will lose water as the water moves by diffusion from higher to lower concentration. The cytoplasm of this cell has shrunken in a process called plasmolysis.

Why can’t you see the cell membrane in elodea cells?

Never have chloroplasts. Lack a cell wall, and have no central vacuole. This Elodea leaf cell exemplifies a typical plant cell. … The membrane is so thin and transparent that you can’t see it, but it is pressed against the inside of the cell wall.

Does Plasmolysis occur in animal cells?

Most animal cells consist of only a phospholipid bilayer (plasma membrane) and not a cell wall, therefore shrinking up under such conditions. Plasmolysis only occurs in extreme conditions and rarely occurs in nature.

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. … The chloroplasts contain the green chemical chlorophyll that is used in the process of photosynthesis.

How would I know that Plasmolysis has occurred if I am observing a plant cell?

Spend a few minutes observing the cells. … If you added enough salt solution, you should see that the cytoplasm and cell membranes have pulled away from the cell walls. This process is known as plasmolysis and only occurs in plant cells.

What happens if you put a red blood cell in salt water?

The red blood cell will lose water and will shrink. This shrinking is termed crenation or plasmolysis. The 2.0% NaCl solution outside the red blood cell is hypertonic (it contains more salt than the red blood cell) to the red blood cell.

How do your elodea cells in 10% NaCl compare to your original elodea cells?

On the Elodea cells the 10% NaCl solution causes the cell membrane to shrink but the cell wall of plants prevents the entire cell from shrinking. Because of this the cell appears to have the chloroplasts clustered in the center. … This can be difficult to see since Elodea is an aquatic plant.