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Plasmolysis is the separation of plant cell cytoplasm from the cell wall as a result of water loss. It is unlikely to occur in nature, except in severe conditions. Plasmolysis is induced in the laboratory by immersing a plant cell in a strongly saline or sugary solution, so that water is lost by osmosis.
If onion epidermal tissue is immersed in a solution of calcium nitrate, cells rapidly lose water by osmosis and the protoplasm of the cells shrinks (Web Figure 3.8.A). This occurs because the calcium and nitrate ions freely permeate the cell wall and encounter the selectively permeable plasma membrane. The large vacuole in the center of the cell originally contains a dilute solution with much lower osmotic pressure than that of the calcium nitrate solution on the other side of the membrane. The vacuole thus loses water and becomes smaller. The space between the cell membrane and the cell wall enlarges and the plasma membrane and the protoplasm within it contract to the center of the cell. Strands of cytoplasm extend to the cell wall because of plasma membrane-cell wall attachment points. Plasmolysed cells die unless they are transferred quickly from the salt or sugar solution to water.
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Plasmolysis of a human red blood cell would occur if the cell were?
hypertonic
Can animal cells undergo plasmolysis?
Animal cells undergo lysis, and plant cells undergo plasmolysis. Lysis occurs when a plant cell explodes due to too much pressure on the inside, and plasmolysis occurs when the vacuole of a plant cell shrinks away from the cell wall due to lack of water.
What does plasmolysis explain?
Plasmolysis contraction of the protoplasm in a living cell when water is removed by exosmosis. The process in which cells lose water in a hypertonic solution.
Does bromine occur as a liquid in nature?
Bromine is a liquid but doesn't occur in nature as a free element.
Did halogens frequently occur in nature as free elements?
Yes, the halogens did occur in nature as free elements.
Plasmolysis of a human red blood cell would occur if the cell were?
hypertonic
What is the effect when you pour salt on a plant?
If the plant is not a salt water plant, then plasmolysis will occur when you pour salt on a plant.When you pour salt on a plant water molecules inside the cell are drawn out. When the water molecules leave the cell, the cell becomes dehydrates and shrinks. This is called plasmolysis.
What happens to the volume of the cytoplasm during plasmolysis?
The volume of cytoplasm reduces during plasmolysis
Can animal cells undergo plasmolysis?
Animal cells undergo lysis, and plant cells undergo plasmolysis. Lysis occurs when a plant cell explodes due to too much pressure on the inside, and plasmolysis occurs when the vacuole of a plant cell shrinks away from the cell wall due to lack of water.
What does plasmolysis explain?
Plasmolysis contraction of the protoplasm in a living cell when water is removed by exosmosis. The process in which cells lose water in a hypertonic solution.
Is plasmolysis osmosis?
Osmosis is the movement of water molecules across a plasma membrane from a region of low solute concentration to a region of high solute concentration.Plasmolysis is one of the results of osmosis. In other words, osmosis causes plasmolysis to occur. In plasmolysis, cell losses water through osmosis to the surroundings solution.The conditions that will allow playmolysis are :(a) the cell is more hypotonic(b) the surrounding solution is more hypertonic
In what ways can an element occur in nature?
An element occur in nature as a pure element or as a compound.
What is concave plasmolysis?
cancave plasmolysis ar always irreversible and convex ar usually reversible.
When a plant cell such as one from a peony stemis submerged in a very hypotonic solution what is likely to occur?
the cell will become turgid
Does bromine occur as a liquid in nature?
Bromine is a liquid but doesn't occur in nature as a free element.
The shrinking of a plant cell membrane away from the cell wall when placed in a hypertonic solution is called?
The shrinking of a plant cell membrane away from the cell wall when placed in a hypertonic solution is plasmolysis
Is bromine an element that occur in nature as liquids?
Bromine is a liquid but doesn't occur in nature as a free element.
