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What is the difference between cell potential and standard cell potential?
the standard cell potential is the cell potential at standard conditions (25C , 1 atm , and 1M ) but the cell potential is the cell potential of the cell under a real condition and we use nernst equation . i hope this is useful
How pressure potential and solute potential both affect the water potentail of a plants cell?
Water potential in a plant cell is determined by the sum of pressure potential and solute potential. Pressure potential is the physical pressure exerted by the cell wall against the cell's internal pressure, which can enhance water uptake. Solute potential, on the other hand, is influenced by the concentration of solutes in the cell; higher solute concentrations decrease water potential. Together, these factors regulate water movement into and out of the cell, impacting hydration and overall plant health.
According to the pattern of half-cell potentials what determines the polarity of a cell?
According to the pattern of half-cell potentials, what seems to determine the polarity of a cell?
When a cell is at rest?
resting potential
When the stimulates is delievered the permeability of the membrane is changed and?
This change in permeability allows ions to flow in and out of the cell, altering the cell's electrical potential. This process can lead to the generation of an action potential, which is a brief electrical impulse that travels along the membrane of the cell. This action potential is crucial for cell communication and signaling.
What is the difference between cell potential and standard cell potential?
the standard cell potential is the cell potential at standard conditions (25C , 1 atm , and 1M ) but the cell potential is the cell potential of the cell under a real condition and we use nernst equation . i hope this is useful
What is the relationship between membrane potential and resting potential in a cell?
The resting potential of a cell is the membrane potential when the cell is at rest, typically around -70 millivolts. Membrane potential refers to the difference in electrical charge across the cell membrane. Resting potential is a type of membrane potential that is maintained when the cell is not actively sending signals.
What will be the solute potential and pressure potential of the cell at equillibrium?
At equilibrium, the solute potential of the cell will be equal to the solute potential of the surrounding solution. The pressure potential of the cell will be zero when there is no additional pressure on the cell membrane.
What is the electrical potential across the cell membrane of a nerve cell or muscle cell when the cell is not active?
The resting membrane potential of a nerve cell or muscle cell is typically around -70 millivolts. This electrical potential is maintained by the unequal distribution of ions across the cell membrane, with more negative ions inside the cell than outside. This resting potential is essential for the cell to respond to changes in its environment and generate electrical signals when needed.
How pressure potential and solute potential both affect the water potentail of a plants cell?
Water potential in a plant cell is determined by the sum of pressure potential and solute potential. Pressure potential is the physical pressure exerted by the cell wall against the cell's internal pressure, which can enhance water uptake. Solute potential, on the other hand, is influenced by the concentration of solutes in the cell; higher solute concentrations decrease water potential. Together, these factors regulate water movement into and out of the cell, impacting hydration and overall plant health.
What must be the sign of the standard cell potential (cell) for a redox reaction to be spontaneous?
For a redox reaction to be spontaneous, the standard cell potential (cell) must be positive.
Does the cell potential change with concentration variations in a chemical reaction?
Yes, the cell potential can change with concentration variations in a chemical reaction. This is because the concentration of reactants and products can affect the flow of electrons in the cell, which in turn influences the cell potential.
What is the significance of the chloride equilibrium potential in determining the membrane potential of a cell?
The chloride equilibrium potential plays a crucial role in determining the overall membrane potential of a cell. It is the point at which the movement of chloride ions across the cell membrane is balanced, influencing the overall electrical charge inside and outside the cell. This equilibrium potential helps regulate the cell's resting membrane potential and can impact various cellular functions and signaling processes.
What does the vacuole do in the cell of a plant?
It maintains the osmotic potential of the cell
How can one determine the cell potential in a chemical reaction?
The cell potential in a chemical reaction can be determined by calculating the difference in standard electrode potentials of the two half-reactions involved in the cell. The cell potential is the difference between the reduction potentials of the two half-reactions. The formula for calculating cell potential is Ecell Ered(cathode) - Ered(anode).
How do scientists measure the standard reduction potential of a half cell?
Scientists typically use a standard hydrogen electrode (SHE) as a reference electrode to measure the standard reduction potential of a half-cell. The half-cell under study is connected to the SHE through a salt bridge, and the cell potential is measured using a voltmeter. By comparing the potential of the half-cell with that of the SHE at standard conditions (1 M concentration and 25 degrees Celsius), the standard reduction potential of the half-cell can be determined.
What is the significance of the equilibrium potential of Cl in determining the membrane potential of a cell?
The equilibrium potential of chloride (Cl) plays a significant role in determining the overall membrane potential of a cell. This is because chloride ions are negatively charged and their movement across the cell membrane can influence the overall charge inside and outside the cell. The equilibrium potential of chloride helps to establish the resting membrane potential of the cell, which is crucial for various cellular functions such as nerve signaling and muscle contraction.
