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If the membrane in a beaker were impermeable would the concentration of salt parts on either side of the mnrame change?
Wiki User
∙ 9y ago
If the membrane in a beaker were impermeable the concentration of salt parts on either side will not change
Wiki User
∙ 9y ago
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When there are different amounts of a substance on either side of the cell membrane an gradient results?
osmosis
Does altering the permeability of the membrane change the equilibrium concentration of the solute in the cell?
yes
How do small molecules pass through the cell membrane?
There are three types of transport for molecules across the cell membrane. 1 - Diffusion - Molecules move from an area of high concentration to an area of low concentration 2 - Osmosis - same idea as diffusion, but refers to the movement of WATER across a selectively permeable membrane. How can you change water concentration? Add a solute. If you have 2 250 ml beakers, connected and divided by a selectively permeable membrane, and one beaker contains a salt solution, the salt solution is "hypotonic" (hypo- less, tonic - water) to the water filled beaker. One will see a migration of water into the salt solution beaker. BOTH diffusion and osmosis rely on concentration gradients to perform their jobs. They always want "equilibrium" between both sides of the membrane. 3 - Active transport - Proteins embedded in the cell membrane move large molecules through the cell membrane or AGAINST the concentration gradient. The size one is obvious; If it's really big, it won't permeate the membrane. As for the concentration gradient, this means that it moves a molecule INTO the area with and already HIGHER concentration. If this happens with say... H+ molecules, it creates a potential difference - ie - Voltage across the membrane. Cellular respiration counts on this process to create ATP/Energy for the cell.
Which cellular structure in an animal cell helps maintain homeostasis by controlling the transportation of substances into and out of the cell?
A cell seeks to maintain homeostasis within the cell therefore osmosis will occur. The cell will change the concentration of water within the cell to match the concentration of water outside the cell.
Where is the net movement of water in a hypotonic solution?
no Water will move freely between the two solutions if they are separated by a selectively permeable membrane. However, there will be no net change in the concentration of water on either side of the membrane. Differences in solute concentration will allow you to predict net changes in water movement.
If two solutions having different osmolarities are separated by a water-permeable membrane will there be a change in the volume of the two compartments if the membrane is impermeable to solutes?
Water will flow from a region of higher concentration to lower concentration until the two osmolarities are equal if the membrane is impermeable to the solute. A change in the volume of the solution would be the result. If it is permeable then the solute will diffuse simultaneously from the higher solution to the lower solution until equilibrium is reached. The volume will not change in this case.
When the concentration on molecules on both sides on the membrane the molecules will?
Osmosis only occurs when the concentration of solutions are different when separated by a membrane. If both solutions are of the same concentration, Osmosis will not occur, so there will be no change.
When there are different amounts of a substance on either side of the cell membrane an gradient results?
osmosis
Does altering the permeability of the membrane change the equilibrium concentration of the solute in the cell?
yes
What does diffusion across the cell membrane cause?
A change in concentration of solutes on either side of the membrane. Depending on the tonicity of the inner-membrane and the outside of the membrane, plasmolysis or cytolysis may occur.
If the concentrationof molecules on both sides of a membrane is the same the molecules will?
When the concentration of molecules on both sides of a semi permeable membrane are the same, there is no concentration gradient. Therefore, the system is at a state of equilibrium and the molecules remain static
How do small molecules pass through the cell membrane?
There are three types of transport for molecules across the cell membrane. 1 - Diffusion - Molecules move from an area of high concentration to an area of low concentration 2 - Osmosis - same idea as diffusion, but refers to the movement of WATER across a selectively permeable membrane. How can you change water concentration? Add a solute. If you have 2 250 ml beakers, connected and divided by a selectively permeable membrane, and one beaker contains a salt solution, the salt solution is "hypotonic" (hypo- less, tonic - water) to the water filled beaker. One will see a migration of water into the salt solution beaker. BOTH diffusion and osmosis rely on concentration gradients to perform their jobs. They always want "equilibrium" between both sides of the membrane. 3 - Active transport - Proteins embedded in the cell membrane move large molecules through the cell membrane or AGAINST the concentration gradient. The size one is obvious; If it's really big, it won't permeate the membrane. As for the concentration gradient, this means that it moves a molecule INTO the area with and already HIGHER concentration. If this happens with say... H+ molecules, it creates a potential difference - ie - Voltage across the membrane. Cellular respiration counts on this process to create ATP/Energy for the cell.
Does osmosis occur in dead cells?
if the membrane is intact and there is a change of concentration of solut or solvent, osmosis should happen.
When there are different amounts of a substance on either side of the cell membrane is a what gradient results?
When there are different amounts of a substance on either side of the cell membrane the gradient result is called the concentration gradient. The permeability of the cell membrane will determine which substances can easily pass through the cell causing a change to the concentration gradient.
Which cellular structure in an animal cell helps maintain homeostasis by controlling the transportation of substances into and out of the cell?
A cell seeks to maintain homeostasis within the cell therefore osmosis will occur. The cell will change the concentration of water within the cell to match the concentration of water outside the cell.
What control osmosis?
Osmosis is controlled by the difference in solute concentration between a semi-permiable membrane. The membrane is too small for the solute to pass through to reach equilibrium, but water is small enough to go through, so it passes through the membrane and equilibrates the concentration of the solute on both sides. This process is driven by the positive change in entropy.
Where is the net movement of water in a hypotonic solution?
no Water will move freely between the two solutions if they are separated by a selectively permeable membrane. However, there will be no net change in the concentration of water on either side of the membrane. Differences in solute concentration will allow you to predict net changes in water movement.
