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The fact that a cell has an electrical potential difference across its membrane makes that cell what?
Theblackcat
The cell membrane is semi-permeable so that charged ions can not diffuse down or up a concentration cell into or out of the cell. There are cell bound proteins that transport charged ions like K+, Na+ and Ca2+ across the cell membrane and the net effect is that the cell is negatively charged ( about -70 mV) with respect to the extracellular space.
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∙ 15y ago
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Which is the correct term for the movement of an electrical charge across a membrane?
Potential difference.
What is a difference in electric charge called?
The chemical gradient refers to the imbalance of substances across the membrane. The Electrical Gradient refers to the difference of charges between substances on different sides of the Membrane. The Electrochemical Gradient refers to the combination of the previous two gradients. The short answer is MEMBRANE POTENTIAL.
What is a shift in the electrical potential across a plasma membrane toward 0mv?
Depolarization
When ions move across a plasma membrane what will happen?
they create a flow of electrical currrent that can disturb the resting membrane potential.
What is the Difference between membrane potential and equilibrium potential?
Equilibrium potential is referring to the equilibrium (or balance) established between the forces of diffusion and electrical forces specific to each ion. For example, the equilibrium potential for Potassium, K+, in a cell with a semi permeable membrane is -80mV or Ek+=80mV. The membrane potential, on the other hand, refers to the voltage across the membrane at anytime and takes into account a range of equilibrium potentials such as Potassium, Sodium etc.
Which is the correct term for the movement of an electrical charge across a membrane?
Potential difference.
What is a difference in electric charge called?
The chemical gradient refers to the imbalance of substances across the membrane. The Electrical Gradient refers to the difference of charges between substances on different sides of the Membrane. The Electrochemical Gradient refers to the combination of the previous two gradients. The short answer is MEMBRANE POTENTIAL.
What is the difference in electrical charge across the cell membrane of a resting neuron is called?
This is the definition of "resting potential".
What is a membrane potential?
a voltage or electrical charge across the plasma membrane
What is a shift in the electrical potential across a plasma membrane toward 0mv?
Depolarization
The difference in the concentrations of a substance across a cells membrane?
action potential
What is the electrical potential across the cell membrane of a nerve cell or muscle cell when the cell is not active?
resting potential
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 describes the difference in the concentrations of a substance across a cells membrane?
action potential
Describes the difference in the concentrations of a substance across a cell membrane?
action potential
What term describes the difference in the concentration of a across a cells membrane?
action potential
When ions move across a plasma membrane what will happen?
they create a flow of electrical currrent that can disturb the resting membrane potential.
