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A physiologist observes that the concentration of sodium inside a cell is decidedly lower than that outside the cell. Sodium diffuses easily across the plasma membrane of such cells when theyare dead?
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What determines the direction in a substance diffuses across a membrane?
The concentration gradient determines the direction in which a substance diffuses across a membrane. The concentration gradient is a measure of how the concentration of a substance changes from one place to another.
When water diffuses through a selectively permeable membrane?
Diffusion without a concentration gradient; osmosis with.
How does oxygen get in and out of plasma membrane?
Oxygen, O2, is a small enough molecule that it diffuses diwn it's concentration gradient into the cell and rather easily foes through the plasma membrane. Many small molecules can do this.
There is a greater concentration of na plus and there is a greater concentration of k plus in the cell?
There is a greater concentration of Na plus outside and there is a greater concentration of K plus inside the cell. When the stimulus is delivered, the permeability of the membrane is changed, and Na plus diffuses into the cell, initiating the depolarization of the membrane.
What material diffuses across the cell membrane during osmosis?
Osmosis is the movement of WATER from an area of high concentration to an area of low concentration through a semi-permeable membrane. So water is exchanged during osmosis.
What determines the direction in a substance diffuses across a membrane?
The concentration gradient determines the direction in which a substance diffuses across a membrane. The concentration gradient is a measure of how the concentration of a substance changes from one place to another.
When water diffuses through a selectively permeable membrane?
Diffusion without a concentration gradient; osmosis with.
What determineds the direction in which a substance diffuses across a membrane?
Concentration gradient determines the direction of flow.
What is istotonic?
We generally use the term "tonic" when referring to the effects of osmosis across a real biological membrane. Osmosis is the movement of water across a membrane. We usually have osmosis when the concentration of solutes on each side of the membrane are different so water diffuses from the side with lower solute concentration to the side with higher concentration and this usually continues until we have equilibrium and no more water diffuses across. This environment is called an isotonic environment. ("iso" is Greek for similar or equal)
What is the process in which water diffuses across the cell membrane of an animal cell membrane of an animal cell from a region concentration to a region of low concentration?
Osmosisdiffusion deals with anything moving from high to low concentrations while osmosis is specifically water
How does oxygen get in and out of plasma membrane?
Oxygen, O2, is a small enough molecule that it diffuses diwn it's concentration gradient into the cell and rather easily foes through the plasma membrane. Many small molecules can do this.
The diffusion of water across a semipermeable membrane is called?
When water diffuses through a semipermeable membrane, such as a cell, it is called osmosis. In osmosis the concentration of water will differ on one side of the membrane from that of the other side. Water molecules will tend to diffuse from the high concentration side to the lower.
There is a greater concentration of na plus and there is a greater concentration of k plus in the cell?
There is a greater concentration of Na plus outside and there is a greater concentration of K plus inside the cell. When the stimulus is delivered, the permeability of the membrane is changed, and Na plus diffuses into the cell, initiating the depolarization of the membrane.
What material diffuses across the cell membrane during osmosis?
Osmosis is the movement of WATER from an area of high concentration to an area of low concentration through a semi-permeable membrane. So water is exchanged during osmosis.
Oxygen diffuses through what structure?
A semipermeable membrane.
Where does CO2 enter the chloroplast?
It diffuses through the membrane.
What does water chases osmoles mean?
This statement means that as the solute concentration increases, the concentration of water decreases. Osmosis is the diffusion of a solvent such as water. Osmosis occurs whenever there is a difference of water concentrations between two sides of a membrane. The water diffuses to the side of the membrane which contains the highest concentration of solutes. by Together.
