What would happen if all of the Na+/K+ pumps in a cell stopped working? One of the other transport proteins will immediately take over The voltage across the membrane will immediately get more negative The voltage across the membrane will immediately get more positive Nothing will change Gradients and voltage across the membrane will slowly run down All of the above

What would happen if all of the Na+/K+ pumps in a cell stopped working? One of the other transport proteins will immediately take over The voltage across the membrane will immediately get more negative The voltage across the membrane will immediately get more positive Nothing will change Gradients and voltage across the membrane will slowly run down All of the above

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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Similar questions

In which way are voltage-gated ion channels and active transporters similar? a they are required to move small permeable molecules across cell membranes b they are proteins which move molecules across cell membranes c they utilize facilitated diffusion d they directly require energy in the form of ATP to move molecules e they generate concentration gradients
The abundant intercellular connections gab junction can be found in O diaphragm O Heart muscle O Skeletal muscle O Smooth muscle
When the nerves deliver a signal to contract, Ca++ (calcium ions) rush into the cell. The calcium ion influx causes specialized fibers to contract. Afterward, calcium ions are pumped out of the cell by calcium ATPases. What transport type(s) is occuring?s antiporter only ion gated transport followed by active transport active transport only ion gated transport only active transport followed by ion gated transport
difference between channels and transporters is that O Only channels allow for the passage of solutes against their electrochemical gradient. OTransporters allow for a greater rate of transport across a membrane than channels do. O Only channels allow for the transport of ions. Transporters must undergo a conformational change upon binding to the solute.
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
If the intracellular concentration of sodium ions in a cell is 5 mM and the extracellular concentration is 140 mM, which of the following would be TRUE? a at room temperature the equilibrium potential of sodium would be -84 mV b if the cell was only permeable to sodium its membrane potential would be negative c sodium ions would tend to move by simple diffusion into the cell d all of the above e none of the above
Which type of membrane transporter requires a gradient to move molecules across the membrane? O Voltage-gated channels Leak channels O Ligand-gated channels All of the above require a gradient O None of the above require a gradient
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
The rate at which the Na+K+ pump operates is not constant but is controlled by a combined effect of changes in ICF Na+ concentration and ECF K+ concentration. Do you think the changes in both ICF Na+ and ECF K+ concentration following a series of action potentials in a neuron would accelerate, slow down, or have no effect on the Na+K+ pumps in this cell?
Active transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other direction
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.
If I have a higher concentration of water inside my cells , which is low concentration of solute inside the cells the makes my cell swell and it cause hypotonic. Is that true? I am confused having low concentration of solute inside not outside of the cell right? Is it