None Scenario: Examine the diagram of an animal cell below. Write these starting concentrations on the diagram: 140 mM extracellular Na*,10 mM intracellular Na: 10 mM extracellular K, 150 mM intracellular K*.BNaEKFACDGiven the conditions in the scenario, what does C represent?O two potassium ionsOone sodium ionO three potassium ionstwo sodium ionsthree sodium ionsD

In the diagram, label "C" points to one black arrow moving out of the circle. Since this diagram…

Answered: Scenario: Examine the diagram of an…

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 7UC: Describe the contribution of each of the following to establishing and maintaining membrane...

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Calculate the equilibrium membrane potential for Na* for an extracellular fluid concentration of 138 mM and an intracellular fluid concentration of 16 mM. Bereken die ewewigsmembraan potensiaal vir Na* vir 'n ekstrasellulêrevloeistof konsentrasie van 138 mM en 'n intrasellulêre vloeistof konsentrasie van 16 mM. a. -90 mV. b. -84 mV. C. -72 mv. d. -63 mV. e. +57 mV.
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 would the membrane potential be if the cell membrane suddenly became 10X more permeable to just sodium?
;, Consider a spherical cell at body temperature (37°C) that is 10 µm in radius. The concentration of ions inside and outside the cell are given below. Sodium and potassium are the only permeant ions, and the membrane contains proteins that pump in 3 sodium ions for every 2 potassium ions pumped out. [Na*] = ? [K*] = 119mM [Ci] = 8mM [A] = 121mM [Na*] = 120mM [K*] = ? [Cr] = 125MM [glu] = ? (a) Suppose the cell is in osmotic equilibrium, find the 3 unknown concentrations. (b) Suppose the membrane conductance to sodium is 5% that to potassium, find the resting membrane potential via circuit analysis. (c) What would the resting potential be if the membrane were instead permeable only to chloride ions? (d) Suppose the cell was suddenly placed in distilled water, what would happen to it? And, how much external pressure (positive or negative) would be needed to prevent this from happening?
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.
Answer the following questions about the resting membrane potential of cells (in other words, the electrochemical gradient of a cell at rest). 1. In regards to Na+ and K+, what is the ionic gradient of these ions across the plasma membrane? 2. What is the electrical charge just inside the plasma membrane and just outside the plasma membrane of a cell at rest? 3. What maintains this electrochemical gradient?
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?
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
In the Nernst equation [V = 62 log10 (Co / Ci)], the term Co represents: cell bio the intracellular concentration of calcium the extracellular concentration of potassium the extracellular concentration of sodium the intracellular concentration of potassium the membrane potential (in millivolts)
Please ASAP. Thank you. If the Cl- concentration outside of cells is 10 mM and inside of cells is 10mM, what would the Cl- equilibrium potential be? When the membrane is at +10mV. The chloride flows in which direction?
Which of the following statements is correct? 160 山L 140 KEY 120 Na+ 100 K* 80 CI 60 HCO, 40 Proteins 흐 20 Compartment A Compartment B Compartment B represents the cytosolic fluid Compartment A represents the blood plasma Compartment A represents the intracellular fluid Compartment B represents the extravascular water lon concentration (mmol/L)
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

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