There is onlu one answer that correct A cell is at rest at -70 mV, and chloride channels open. In which direction does chloride flow and how does this affect the membrane potential? Group of answer choices One would expect the efflux of Cl-,this making the inside of the cell more positive. One would expect the influx of chloride ions resulting in the movement away from threshold. There would be no effect as the permeability for Cl is ZERO Based on yesterday's lab, chloride plays no role in the membrane potential

There is onlu one answer that correct A cell is at rest at -70 mV, and chloride channels open. In which direction does chloride flow and how does this affect the membrane potential? Group of answer choices One would expect the efflux of Cl-,this making the inside of the cell more positive. One would expect the influx of chloride ions resulting in the movement away from threshold. There would be no effect as the permeability for Cl is ZERO Based on yesterday's lab, chloride plays no role in the membrane potential

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

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 3SQE

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Similar questions

For most neurons, the extracellular concentration of chloride ions (Cl-) is 108 mM, whilethe intracellular concentration of Cl- is 5 mM.If the plasma membrane becomes more permeable to Cl-, would there be Clinflux or Cl- efflux at an RMP of -70 mV? Why?
If sodium permeability were to increase compared to normal what would be the resulting effect on the membrane potential 1.The charge on the inside of the cell becomes less negative compared to resting conditions and hyperpolarizes 2.The charge on the inside of the cell becomes more negative compared to resting conditions and hyperpolarizes 3.The charge on the inside of the cell becomes less negative compared to resting conditions and depolarizes 4.The charge on the inside of the cell becomes more negative compared to resting conditions and depolarizes
Chloride ions (Cl-) behave a bit differently to Na+ and K+ in that most cells don't have active Cl- transporters. As a result, the concentration gradient for Cl- is not 'set' like it is for Na+ and K+. There are, however, a limited number of Cl- leak channels in the cell membrane. As a result, Eci generally matches resting membrane potential - around - 70mV. Considering this, answer the following questions. If Cl- can cross the cell membrane, is not being actively transported, and membrane potential is -70mV, will there be a concentration gradient for Cl-?
Let’s say that the intracellular tonicity is 300 mosm. Checkmark the correct response to what would happen to the cell when it is placed in the following solutions prepared from sucrose (impermeable), NaCl (impermeable), and urea (permeable). Solution Nothing Swell Shrink 100 mM sucrose 200 mM NaCl 300 mM urea 300 mM NaCl 100 mM sucrose + 100 mM NaCl 100 mM urea
if an object b has a plasma sodium concentration of 135mOsm/L and an intracellular concentration of 4mOsm/L. It also has a plasma concentration of potassium of 20mOsm/L and an intracellular concentration of 200mOsm/L. studies identify that the cells have a permeability to potassium that is 10 times greater than sodium. What is the resting membrane potential
There are differences in Na+, K+, and Cl- ion concentrations across the membrane. Knowing that ions like to flow down their respective concentration gradients explain how the movement of Cl- and K+ ions can result in membrane hyperpolarization.
Left Compartment Right Compartment 7 grams of Z per liter solution 4 grams of XY per liter of solution total volume = 1 liter. total volume = 1 liter Solute Z has a molecular weight of 20 (non-dissociable) Solute XY has a molecular weight of 10 (dissociates into X+ and Y-) 1. If the membrane is impermeable to all solutes, and there are 7 g/l of solute in the left compartment, what concentration of XY (g/l) in right compartment would make the solutions isotonic?
The determination of membrane permeability to a specific solute is broadly Fick's first law that is modified to account for... the size of the solute relative to the membrane lipids the solute's ability to dissolve in lipids membrane thickness the electrical interaction between the solute and the membrane
what would the membrane potential be if the membrane became 10X more permeable to both sodium and chloride
Left Compartment Right Compartment 7 grams of Z per liter solution 4 grams of XY per liter of solution total volume = 1 liter total volume = 1 liter Solute Z has a molecular weight of 20 (non-dissociable) Solute XY has a molecular weight of 10 (dissociates into X+ and Y-) If X+ and Y- are ions, which are permeable through the membrane, and Z is not, what will happen and why?
What is an average range of millivolt difference between resting membrane potential and threshold potential? 150-300mV 1-2mV 0.005-500mV 15-30mV
The rapid upstroke of a SA nodal cell action potential is due to the opening of voltage-gated Na+ channels. answer should clearly state whether or not the statement is correct and then concisely explain why. the answer should be 3-5 sentences and address all of the points in the statement. Here is an example: Both transmembrane carrier proteins and transmembrane channel proteins can mediate active transport of a hydrophilic solute through a cell plasma membrane. This statement is incorrect. Movement of a solute through a channel protein is always passive, whereas carrier-mediated transmembrane transport can be either passive or active. A transmembrane channel protein creates a pore through the membrane allowing for simple diffusion of a hydrophilic solute down a concentration gradient through the membrane. In contrast, transmembrane carrier protein interacts with and ‘escorts’ a hydrophilic solute through the membrane and is capable of transporting a solute against a concentration…