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Does increasing membrane permeability affect the time it takes for the osmometer to reach equilibrium?
Yes, increasing membrane permeability can affect the time it takes for the osmometer to reach equilibrium. Higher permeability allows for faster movement of solvent and solutes across the membrane, which can result in a quicker establishment of equilibrium between the two solutions.
Why resting membrane potential value sodium is closer to equilibrium of potassium?
The resting membrane potential value for sodium is closer to the equilibrium of potassium because the sodium-potassium pump actively maintains a higher concentration of potassium inside the cell and a higher concentration of sodium outside the cell. This leads to a higher permeability of potassium ions at rest, resulting in the resting membrane potential being closer to the equilibrium potential of potassium.
Do low concentration increase membrane permeability?
Low concentrations of certain substances can increase membrane permeability by creating a gradient that allows for the passive diffusion of molecules across the membrane. For example, when the concentration of a solute outside a cell is lower than inside, it may promote the movement of water through osmosis, affecting the cell's membrane integrity. However, the effect on permeability also depends on the specific substance and the membrane's characteristics. Generally, lower concentrations alone do not universally increase membrane permeability; the overall context matters significantly.
What does the difference in the K and Na concentration on either side of the plasma membrane and permeability of the membrane to those ions generate?
The difference in concentration of K+ and Na+ across the plasma membrane, along with the membrane's permeability to these ions, generates the resting membrane potential. This potential is essential for maintaining electrical excitability in cells, such as neurons and muscle cells, and is involved in processes like nerve signaling and muscle contraction.
How Keq affect diffusion?
The equilibrium constant (Keq) reflects the ratio of concentrations of products to reactants at equilibrium in a chemical reaction. While Keq itself does not directly affect diffusion, it influences the concentration gradients that drive diffusion. When a reaction reaches equilibrium, the concentrations stabilize, impacting the net movement of molecules. Thus, changes in Keq can indirectly affect the diffusion rates by altering the concentration differences across a membrane or barrier.
Does increasing membrane permeability affect the time it takes for the osmometer to reach equilibrium?
Yes, increasing membrane permeability can affect the time it takes for the osmometer to reach equilibrium. Higher permeability allows for faster movement of solvent and solutes across the membrane, which can result in a quicker establishment of equilibrium between the two solutions.
Why resting membrane potential value sodium is closer to equilibrium of potassium?
The resting membrane potential value for sodium is closer to the equilibrium of potassium because the sodium-potassium pump actively maintains a higher concentration of potassium inside the cell and a higher concentration of sodium outside the cell. This leads to a higher permeability of potassium ions at rest, resulting in the resting membrane potential being closer to the equilibrium potential of potassium.
When the concentration of molecules on both sides of a membrane is the same (equilibrium) the molecules will?
reach dynamic equilibrium. Answer : move across the membrane in both directions (equilibrium).
What is an example of diffusion in a sentence?
The rate of diffusion is determined by the permeability of the membrane and the concentration gradient.
What does the difference in the K and Na concentration on either side of the plasma membrane (and permeability of the membrane to those ions) generate?
Resting membrane Potential
When the concentration of molecules on both sides of the membrane is the same the molecules will?
reach dynamic equilibrium. Answer : move across the membrane in both directions (equilibrium).
What feature of a membrane describes whether molecules can cross the membrane?
permeabiity
How is equilibrium related to diffusion and osmosis?
Equilibrium in diffusion and osmosis is reached when there is a balanced distribution of particles or solutes across a membrane, resulting in no net movement of particles. In diffusion, equilibrium is reached when there is an equal concentration of particles on both sides of the membrane. In osmosis, equilibrium is reached when the water concentration is the same on both sides of the membrane.
What is the equilibrium of solute across a membrane?
The equilibrium of solute across a membrane is reached when the concentration of the solute is the same on both sides of the membrane. This means that the movement of the solute molecules is balanced, with an equal number of molecules moving in and out of the membrane. At equilibrium, there is no net movement of solute across the membrane.
What can differential permeability also be described as?
Differential permeability can be described as phenomenon where a differential permeable membrane through different diffusion processes allows smaller molecules/ions as glucose, sodium and chlorine to diffuse out while macromolecules as starch to remain behind until an equilibrium is reached, where concentration of smaller molecules/ions equals on both sides of the differential membrane.Differential permeability can also be described as Dialysis.
What is the difference between diffusion potential and nernst potential?
The Diffusion Potential is the potential difference across the boundary b/w two electrolytic solutions of different compositions The Nernst Potential is the diffusion potential across a membrane that exactly opposes the net diffusion of a particular ion through the membrane
What is osmosis controlled by?
Osmosis is controlled by the permeability of the osmotic membrane and the equilibrium of the solutions on either side of the membrane. If the solutions have unequal concentrations or osmotic pressures, and the molecules in the solution can pass through the membrane, then the solutions will mix until both sides have equal concentrations. If the membrane is impermeable, then nothing will happen.
