Which of the following completes the outward flow of a local circuit current across a membrane?
A. capacitive current
B. K+ current
C. Ca++ current
D. Na+ current
Due to higher intracellular and low extracellular concentrations of K+ ions across the membrane, the outward and intracellular currents take place.
So, the correct option is : B. K+ current
Which of the following completes the outward flow of a local circuit current across a membrane?...
What is the current in amperes if 1500 Na+ ions flow across a cell membrane in 3.6 μs ? The charge on the sodium is the same as on an electron, but positive. Express your answer to two significant figures and include the appropriate units.
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The inside of a normal cell is ___________________ (+/-); while the outside is ___________(+/-). The resting membrane potential of a neuron is ___________mV. Diagram the relative ratios of Ca++, Na+ and K+ in a cell under resting conditions. Draw an arrow for each of the molecules indicating which direction would be passive transport (into or out of the cell). For each of the following sentences, fill in...
Consider the transport of Naº and K across the cell membrane by the NaK ATPase. A cell membrane generally is polarized with the inside negative. The following are all components used t calculate AG. Which of these components contributes to a more spontaneous AG? O RT In([Naou] /[Na inj) ORT IN([K]2/[koud) Z Na FAY ZiK FAY
26. AMPA glutamate channels mainly allow for _______ to come across the membrane; however, the NMDA channels (at rest, -70 mV) are blocked by an ion of __________. a. Na+; K+ b. K+; Li+ c. Na+; Mg2+ d. Na+; Ca2+ 27. Relating back to question #26, if I were to depolarize the cell to, lets say, -50mV, the ion blocking the NMDA channel would be expelled from the pore and _________ along with _________ would be allowed to come into...
Calculate the equilibrium membrane potentials to be expected across a membrane at 37 ∘C, with a NaCl concentration of 0.10 M on the right and 0.01 M on the left, given the following conditions. Consider the process is spontaneous. Part A Membrane permeable only to Na+. Express your answer to three significant figures and include the appropriate units. Δψ = Part B State which side is positive (+) Part C Membrane permeable only to Cl−. Express your answer to three...
11. Which of the following describes what when the conjugate of the Thevenin impedance across its terminal that takes place when the impedance of the land is the pedance A. Maximum power will be delivered to the load B. The circuit will be capacitive. C. The circuit will appear resistive. D. A matching impedance must be placed in parallel 12. To ensure maximum power to maximum power to the load, which of the following is determined using the maximum power...
choices for A: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
choices for B: bidirectionally, unidirectionally
choices for C: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
choices for D: Na+/K+ pumps, voltage gated K+ channels,
voltage gated Ca+ channels, voltage gated Na+ channels
Consider this graph illustrating the generation of an action potential across the plasma membrane of a stimulated neuron. +40 ACTION POTENTIAL plasma membrane potential...
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