PSL 425 Final UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS
Driving force that determines the passive transport of Electrochemical Gradient
solutes across a permeable membrane?
When a substance is uncharged, as in the case of When concentrations are equal on both sides
glucose, when can equilibrium occur?
, Neither the chemical nor electrical term in the two terms are equal, but opposite sign
electrochemical potential energy difference equation is
zero, when can equilibrium occur?
Which of the following is unnecessary when fining the Membrane voltage
equilibrium potential of an ion using the nernst equation?
Coulomb's Law explains what physical phenomena? Attractive and repulsive electrostatic force between two charged particles
What is the typical range of resting membrane potential? -60 to -90
The resting membrane potential is mainly determined by the potassium gradient
Gramicidin, a small, unusual peptide produced by Bacillus Small pore and cation selective
braves, forms a water-filled pore across the membrane.
What are the features of this pore?
Nernst potential orders of a neuron at 37 degrees for K, Ca>Na>Cl>K
Na, Ca, Cl from depolarized to hyperpolarized
What does the nernst equation predict for any The equilibrium membrane potential
concentration gradient of a particular ion across a
membrane?
Name of movement of a single ion species through a Current
membrane?
What does rate of ion movement through the membrane external and internal concentrations
depend on? Membrane potential
Permeability coefficient for ion
(ALL THE ABOVE)
Inward flow of Cl is described as outward current
Outward flow of K would be described as positive current
If the membrane is permeable to multiple monovalent Sum
ions and only these ions, the total ionic current would be
the ______ of the individual ionic currents
Which factor best attributes to why the plot of Vm versus Sodium Permeability
K curves away from the idealized nernst slope?
When does capacitative current flow? Only when Vm is changing
What is a unit for time constant? Second
In current clamp, what is measured/changing freely? Voltage
Driving force that determines the passive transport of Electrochemical Gradient
solutes across a permeable membrane?
When a substance is uncharged, as in the case of When concentrations are equal on both sides
glucose, when can equilibrium occur?
, Neither the chemical nor electrical term in the two terms are equal, but opposite sign
electrochemical potential energy difference equation is
zero, when can equilibrium occur?
Which of the following is unnecessary when fining the Membrane voltage
equilibrium potential of an ion using the nernst equation?
Coulomb's Law explains what physical phenomena? Attractive and repulsive electrostatic force between two charged particles
What is the typical range of resting membrane potential? -60 to -90
The resting membrane potential is mainly determined by the potassium gradient
Gramicidin, a small, unusual peptide produced by Bacillus Small pore and cation selective
braves, forms a water-filled pore across the membrane.
What are the features of this pore?
Nernst potential orders of a neuron at 37 degrees for K, Ca>Na>Cl>K
Na, Ca, Cl from depolarized to hyperpolarized
What does the nernst equation predict for any The equilibrium membrane potential
concentration gradient of a particular ion across a
membrane?
Name of movement of a single ion species through a Current
membrane?
What does rate of ion movement through the membrane external and internal concentrations
depend on? Membrane potential
Permeability coefficient for ion
(ALL THE ABOVE)
Inward flow of Cl is described as outward current
Outward flow of K would be described as positive current
If the membrane is permeable to multiple monovalent Sum
ions and only these ions, the total ionic current would be
the ______ of the individual ionic currents
Which factor best attributes to why the plot of Vm versus Sodium Permeability
K curves away from the idealized nernst slope?
When does capacitative current flow? Only when Vm is changing
What is a unit for time constant? Second
In current clamp, what is measured/changing freely? Voltage
