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pressure potential would be zero
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Which way would water move if a cell is placed in salt water (a hyper tonic solution)?
The water potential of the outside solution would be lower than the water potential of the cell itself. Therefore, water would pass out of the cell by osmosis (as water moves from a region of higher water potential to lower water potential). An animal cell would shrivel and become crenated. In a plant cell, the cytoplasm would shrink and the cell membrane would come away from the cell wall. This is called plasmolysis and when complete, the cell is said to be flaccid.
What would happen to a plant cell in salt water?
the plant may wilt-or even due to flaccid cells. Shrinked cell is called flaccid cell ,it is due to lack of water.
How does a plant cell become flaccid?
If a plant cell is flaccid, water has escaped from inside the cell to the outside, by osmosis. Under a microscope, the cell membrane can be seen to detach itself from the cell wall.
What part of the cell membrane acts as a fluid?
Because it can have the same problems as water E.G. turgid and flaccid Turgid is the flooding of the cell membrane and flaccid is the drought of the cell membrane.
What is turgor pressure and why is it so important?
Turgor supports plants that do not have woody stems. Plants lacking in turgor visibly wilt. The process of osmosis plays an important part in maintaining the turgidity of plant cells.Water leaves and enters the cell by osmosis. If too much water leaves the cell, for example during drought or saline conditions, then turgor is lost and the cell becomes flaccid. As turgor gives the plant rigidity, loss of turgidity results in the plant wilting
What is the difference between a flaccid cell and plasmolised cell?
When a cell is immediatly withdrawn turgar pressure called flaccid cell while a cell loose more water even after flaccididty and contraction of protoplast that cell is called plasmolised cell
Which way would water move if a cell is placed in salt water (a hyper tonic solution)?
The water potential of the outside solution would be lower than the water potential of the cell itself. Therefore, water would pass out of the cell by osmosis (as water moves from a region of higher water potential to lower water potential). An animal cell would shrivel and become crenated. In a plant cell, the cytoplasm would shrink and the cell membrane would come away from the cell wall. This is called plasmolysis and when complete, the cell is said to be flaccid.
What would happen to a plant cell in salt water?
the plant may wilt-or even due to flaccid cells. Shrinked cell is called flaccid cell ,it is due to lack of water.
What is the opposite of a turgid cell?
The opposite of a turgid plant cell is called a flaccid plant cell. A walled cell is flaccid in surroundings where there is no tendency for water to enter. A turgid wall is very form, while a flaccid cell wall is more limp.
How does a plant cell become flaccid?
If a plant cell is flaccid, water has escaped from inside the cell to the outside, by osmosis. Under a microscope, the cell membrane can be seen to detach itself from the cell wall.
What part of the cell membrane acts as a fluid?
Because it can have the same problems as water E.G. turgid and flaccid Turgid is the flooding of the cell membrane and flaccid is the drought of the cell membrane.
When the central vacuole in a plant cell is full the cell becomes?
Turgid. As opposed to flaccid.
What is turgor pressure and why is it so important?
Turgor supports plants that do not have woody stems. Plants lacking in turgor visibly wilt. The process of osmosis plays an important part in maintaining the turgidity of plant cells.Water leaves and enters the cell by osmosis. If too much water leaves the cell, for example during drought or saline conditions, then turgor is lost and the cell becomes flaccid. As turgor gives the plant rigidity, loss of turgidity results in the plant wilting
If a plant cell has a lower water potential than its surrounding environment and if pressure is equal to zero is the cell hypertonic or hypotonic to its environment?
water potential measures the tendency of water to move from one region to another. In the case of osmosis occurring through the membrane of a plant cell, the water potential is the sum of the solute potential and the pressure potential.The question states the pressure potential is nil. Therefore, the water potential is a direct measure of the solute potential.The question also states that the water potential within the cell is lower than that of its surroundings. This means the solute potential within the cell is also lower than that of its surroundings Hence, there is more solutes outside the cell and less solutes inside the cell.This type of solute gradient will cause solvent to move out of the cell. Therefore the cell is hypotonic to its environment.
What will the water do if you immerse a living cell into hypertonic solution?
When dealing with cells and their surrounding environment, if the outside of the cell is hypertonic (more salty), water will move out of the cell. This is an effort for the concentration of the salt to even out. The cell will shrink as a result.
Can animal cells become flacid?
Animal cells do not become flaccid. Flaccid is a term to describe plant cells when not enough water is available. The cell membrane shrinks and pulls away from the cell wall, causing the plant to look wilted. Animal cells do not have cell walls and therefore, even under hypotonic or dehydrated conditions, are not referred to as being flaccid.
What is the new water potential of a plant cell of water potential 500kPa after immerse into pure water?
Water potential is the potential energy of water in a system (eg a solution or a cell) compared with pure water under the same conditions. The value of the water potential depends mainly on two factors: 1) The presence of dissolved solutes. Solutes dissolved in the water reduce the energy of the water molecules, and so lower the water potential. This happens because the solute molecules attract the water molecules and reduce their movement. The component of water potential due to solutes is called the solute potential of the solution. 2) The presence of an excess pressure, above that of normal atmospheric pressure. Pressure increases the movement of the water molecules and so increases their energy, thus increasing the water potential. The component of water potential due to pressure is called the pressure potential of the solution. The total water potential of a solution is the sum of the solute potential and pressure potential water potential = solute potential + pressure potential The pressure potential can be positive or negative. An additional pressure on the solution will be positive and increase the pressure potential. If the solution is subject to a reduced pressure (a negative pressure or suction) the pressure potential will be negative and will reduce the water potential. The solute potential is always negative and so always reduces the water potential. Pure water is given a water potential of zero (similar to the way in which the freezing point of water is given a value of 0o Celsius). So anything which reduces the energy of the water molecules (such as dissolving a solute) will reduce the water potential to below zero, and so will be negative. The movement of water depends on the difference in water potential between two systems eg two adjacent cells, or a cell and the surrounding solution. This difference is called the water potential gradient. Water will always move from the higher to the lower water potential ie down the water potential gradient. In osmosis, the two solutions involved are often at atmospheric pressure. In this case it is only the difference in solute concentration which determines the direction of water movement. Water moves from the dilute solution to the concentrated solution. The concentrated solution has a higher concentration of dissolved particles, and so has a lower solute potential than the dilute solution. Since the pressure potential is zero (no excess pressure), the water potential is equal to the solute potential. Water will therefore move from the higher water potential (ie the dilute solution) to the lower water potential (ie the more concentrated solution), down the water potential gradient. It is possible for the pressure potential to counteract the solute potential. For example, if a solute (eg salt) is added to pure water, the water potential will be reduced to a negative value. If the solution is then put under extra pressure eg in a syringe, the positive pressure potential can raise the total water potential above zero ie give it a positive value. This happens especially in plant cells, where the cell wall prevents an increase in volume of the cell. So if water enters by osmosis the extra water molecules cause the pressure inside the cell to increase. This intracellular pressure in a plant cell is called the turgor pressure. For more information see: http://en.wikipedia.org/wiki/Water_potential http://www.colorado.edu/eeb/courses/4140bowman/lectures/4140-07.html http://www.phschool.com/science/biology_place/labbench/lab1/watpot.html
