Distribution of which ions can express the state of equilibrium?Select one:a. Na ions on both sides of membraneO b. Cl ions on both sides of membranec. K ions on both sides of membraned. Ca ions on both sides of membrane

Membrane potential(transmembrane potential) is the term that describes the difference in the…

Distribution of which ions can express the state of equilibrium? Select one: O a. Na ions on both sides of membrane b. Cl ions on both sides of membrane c. K ions on both sides of membrane d. Ca ions on both sides of membrane

Distribution of which ions can express the state of equilibrium? Select one: O a. Na ions on both sides of membrane b. Cl ions on both sides of membrane c. K ions on both sides of membrane d. Ca ions on both sides of membrane

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 3RE

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

Question

Distribution of which ions can express the state of equilibrium?
Select one:
a. Na ions on both sides of membrane
O b. Cl ions on both sides of membrane
c. K ions on both sides of membrane
d. Ca ions on both sides of membrane

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Draw a sketch of a graph showing a complex AHP consisting of a first component AHP, an ADP, and a second component AHP before repolarization to resting membrane potential
Which of the following contribute(s) to the resting membrane potential?a. the relative leakiness of the membrane to Na+ and K+b. active transport of ions across the membranec. concentration of Na+ and K+ inside and outside of the celld. all of the abovee. b and c only
The most important diffusible ion in the establishment of the membrane potential is a. K+. b. Na+. c. Ca2+. d. Cl−.
Describe the contribution of each of the following to the establishment and maintenance of membrane potential: Part A Na+K+ Pump Passive movement of K+ across the membrane Passive movement of Na+ across the membrane
Which of the following is ther eason why the potassium leaves the cell readily at the peak of the action potential?A) The sodium-potassium pumps work hard to return potassium to the extracellular fluid. B) Diffusion will continue to push potassium into the cell, but electrostatic pressure will move potassium out of the cell. C) Diffusion will push potassium out of the cell, but electrostatic pressure continues to attract potassium to the interior of the cell. D) Both diffusion and electrostatic pressure will cause potassium to exit the cell.
A cell biologist is performing an experiment using the voltage clamp method in which they are allowed to change the voltage in the membrane potential. They are wanting to record potassium currents and notice that for a certain membrane potential range, the voltage clamp highlights that there is an inward current of potassium. Would these readings make sense?
A. the fact that one represents a depolarization and the other represents a hyperpolarization. B. the capacitive properties of the membrane. C. the difference in applied voltage.
Describe the contribution of each of the following to establishing and maintaining membrane potential: (a) the Na+K+ pump, (b) passive movement of K+ across the membrane, (c) passive movement of Na+ across the membrane, and (d) the large intracellular anions.
The following graph represents a membrane potential recording in the dark, then during a brief flash of flight at the time indicated by the arrow. This could be a recording from a: a) rod cell b) bipolar cell c) ganglion cell d) any of the above
Which of the following statements is false regarding the directions that forces of the eletrochemical gradient are pointing for each ion. Assume the membrane of the neuron is at rest. A. For chloride ions the electrostatic and diffusion forces are pointing in opposite directions. B For sodium ions the eletrostatic and diffusion forces are pointing in the same direction. C. For potassium ions the eletrostatic and diffusion forces are pointing in opposite directions. D. All options choices are TRUE regarding the forces of the electrochemical gradient on each ion. E. For calcium ions the electrostatic and diffusion forces are pointing in opposite directions.
Why is the resting membrane potential negative? Shouldn't it be positive as cells move in and out positive ions
The inside negative membrane potential is a force that helps support... a.) the movement of (neutral) nonelectrolytes into the cell b.) the movement of cations into the cell c.) the movement of (neutral) nonelectrolytes out of the cell d.) the movement of anions into the cell