Nat K+ CI™ A™ ABCDE Assume the membrane becomes equally permeable to K+ and Cl, and is impermeable to all other solutes. The value of the membrane potential then become approximately A. 100 10 100 0 B. C. D. E. 10 100 10 100 0 mV 60 mV (inside negative) 60 mV (inside positive) 90 mV (inside negative) 90 mV (inside positive)

Nat K+ CI™ A™ ABCDE Assume the membrane becomes equally permeable to K+ and Cl, and is impermeable to all other solutes. The value of the membrane potential then become approximately A. 100 10 100 0 B. C. D. E. 10 100 10 100 0 mV 60 mV (inside negative) 60 mV (inside positive) 90 mV (inside negative) 90 mV (inside positive)

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 2TAHL: Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of...

See similar textbooks

Similar questions

A driving ion moving through a membrane channel in one direction gives energy to actively transport another molecule in the opposite direction. What is this process called? a. facilitated diffusion b. antiport transport c. symport transport d. primary active transport pump e. contransport
The diffusion of substances within a solution tends to move those substances ________ their ________ gradient. up; electrical up; electrochemical down; pressure down; concentration
Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of sodium chloride on side 1 is higher than on side 2. Which of the following ionic movements would occur? a. Na+ would move until its concentration gradient is dissipated (until the concentration of Na+ on side 2 is the same as the concentration of Na+ on side 1). b. Cl- would move down its concentration gradient from side 1 to side 2. c. A membrane potential, negative on side 1, would develop. d. A membrane potential, positive on side 1, would develop. e. None of the preceding is correct.
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
1) a) Draw arrows to indicate which direction Na+ vs K+ions will tend to move.(into vsout of the cell) b) What prevents these solutes from diffusing across the membrane at a significant rate? c)If the solutes were unable to move across the membrane, would the cell be considered hypertonic, hypotonic or isotonic? d) If the solutes were unable to move across the membrane, which way would water move?(inside the cell, outside the cell or no net movement) e) How did the cell establish the differential in the shown ion concentrations in the first place?
Which of the following best describes a hyperosmotic solution? A. a solution with a higher concentration of solutes as compared to the other side of the membrane B. a solution with a lower concentration of solute as compared to the other side of the membrane C. a solution with equal solute concentration as compared to the other side of the membrane D. none of the above
Whether in a gas, a liquid, or a semisolid, diffusion always occurs a). at the same rate. b). from high to low solute concentration. c). faster at lower temperaturesd). from low to high solute concentration.
The sodium–potassium pumpa. helps establish an electrochemical gradient across the membrane.b. concentrates sodium on the outside of the membrane.c. uses a carrier protein and chemical energy.d. is present in the plasma membrane.e. All of these are correct.
8. Which of the following ion transport functions must be carried out by a pump? a. transport of Na+ from the extracellular space to the cytosol b. transport of glucose from the extracellular space to the cytosol c. transport of K+ from the cytosol to the extracellular space d. transport of Na+ from the cytosol to the nucleus e. transport of Na+ from the cytosol to the extracellular space.
Fast block to polyspermy is achieved by a. actin polymerization b. action potential c. osmosis d. membrane depolarization e. exocytosis
What is the most important thing, i.e. what has the biggest impact of determining the resting membrane potential of a cell?
The osmolarity of body fluids is maintained at ___________ . 100 mOsm 300 mOsm 1000 mOsm it is not constantly maintained