3 edition of The electrogenic sodium pump found in the catalog.
by (42 Triangle West, Bristol, BS8 1EX), Scientechnica Ltd in Bristol
Written in English
|Statement||by G. A. Kerkut and Barbara York.|
|Contributions||York, Barbara, joint author.|
|LC Classifications||QH601 .K35|
|The Physical Object|
|Pagination||vii, 182 p.|
|Number of Pages||182|
|LC Control Number||73155406|
Active transport mechanisms can be divided into two categories. Primary active transport directly uses a source of chemical energy (e.g., ATP) to move molecules across a membrane against their gradient. Secondary active transport (cotransport), on the other hand, uses an electrochemical gradient – generated by active transport – as an. The Na+ - K+ pump, the major electrogenic pump in animal cells, exchanges sodium ions for potassium ions, both of which are cations. How does this exchange generate a membrane potential?
The sodium-potassium pump moves sodium ions out of and potassium ions into the cell. This pump is powered by ATP. For each ATP that is broken down, 3 sodium ions move out and 2 potassium ions move in. In more detail: Sodium ions bind to the pump and a phosphate group from ATP attaches to the pump, causing it to change its shape. A book of the names and address of people living in a city. Why is the sodium-potassium pump called an electrogenic pump? Wiki User.
The sodium-potassium pump is called an electrogenic pump because it A) pumps equal quantities of Na? and K? across the membrane. B) pumps hydrogen ions out of the cell. C) contributes to the membrane potential. D) ionizes sodium and potassium atoms. E) is used to drive the transport of other molecules against a concentration gradient. Answer: C. The sodium-potassium pump is called an electrogenic pump because it: a. pumps equal quantities of Na and K across the membrane b. pumps hydrogen ions out of the cell c. contributes to the membrane potential d. ionizes sodium and potassium atoms e. is used to drive the transport of the other molecules against a concentration gradient Thank you for your time.
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Additional Physical Format: Online version: Kerkut, G.A. Electrogenic sodium pump. Bristol (42 Triangle West, Bristol, BS8 1EX), Scientechnica Ltd, As a result of sodium potassium pump proteins and potassium leak channels, a cell may achieve a resting membrane potential of to mv (millivolts).
This negative value indicates how much lower the positive charge within the cytoplasm is compared to the environment on the other side of the membrane. For example, the Na + /K + ATPase (sodium pump) is an electrogenic pump because during every transport cycle, it transports The electrogenic sodium pump book Na + ions out of the cell and 2 K + ions into the cell.
This leads to the movement of one net positive charge out of the cell making this process electrogenic. Transepithelial sodium transport is a process that involves active Na + transport at the basolateral membrane of the epithelial cell.
This process is mediated by the Na + /K + pump, which exchanges 3 internal Na + by 2 external K + inducing a net charge movement and the second Na >+ pump, which transports Na+ accompanied by ClCited by: 2. 55) The sodium-potassium pump is called an electrogenic pump because it A) pumps equal quantities of Na+ and K+ across the membrane.
B) pumps hydrogen ions out of the cell. C) contributes to the membrane potential. D) ionizes sodium and potassium atoms. E) is used to drive the transport of other molecules against a concentration gradient. sodium pump.
resting potential electrogenic pump Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription. Please subscribe or login to access full text content. If you have purchased a print title that contains an access token, please see the token for information.
Buy Electrogenic Ion Pumps (DISTINGUISHED LECTURE SERIES OF THE SOCIETY OF GENERAL PHYSIOLOGISTS) on FREE SHIPPING on qualified orders. Chapter 6 A Coupled Electrogenic Na +-K + Pump for Mediating Transepithelial Sodium Transport in Frog Skin.
Robert Nielsen. Pages Download PDF. Part VI Biological Significance of Electrogenic Ion Pumps. Chapter 25 The Role of the Electrogenic Sodium Pump in Controlling Excitability in Nerve and Cardiac Fibers.
Mario Vassalle. Electrogenic definition is - of or relating to the production of electrical activity in living tissue. How to use electrogenic in a sentence.
Abstract. As described in several preceding chapters, the Na-K pump is responsible for maintaining the cation electrochemical gradients. The diffusion potentials for K + (E K) and Na + (E Na) are about −94 mV and +60 mV, respectively (although some estimates of E Na go as high as + mV).
The resting potential value is usually near E K, because the K + permeability (P Author: Nicholas Sperelakis. The electrogenic sodium pump and membrane potential of identified neurones in Helix aspersa Comparative Biochemistry and Physiology Part A: Physiology, Vol. 47, No. 3 Slow synaptic inhibition: evidence for synaptic inactivation of sodium conductance in sympathetic ganglion cellsCited by: electrogenic pump: An active transport system that uses energy to separate electric charges and produce a potential difference.
Na⁺/K⁺-ATPase (sodium–potassium adenosine triphosphatase, also known as the Na⁺/K⁺ pump or sodium–potassium pump) is an enzyme (an electrogenic transmembrane ATPase) found in the membrane of all animal cells.
It performs several functions in cell physiology. The Na + /K +-ATPase enzyme is active (i.e. it uses energy from ATP).For every ATP molecule that the BRENDA: BRENDA entry.
For the Love of Physics - Walter Lewin - - Duration: Lectures by Walter Lewin. They will make you ♥ Physics. Recommended for you. Characteristics of Electrogenic Sodium Pumping in Rat Myometrium Article (PDF Available) in The Journal of General Physiology 56(3) October with 22.
Squid giant axon possesses a hyperpolarizing electrogenic sodium pump which is stimulated by internal sodium and by external potassium. This conclusion is based on the following observations: strophanthidin depolarizes the membrane and enhances the depolarizing effect of 5 or 10 millimolar external potassium; the magnitude of these effects is directly related Cited by: Figure: Active Transport of Sodium and Potassium: Primary active transport moves ions across a membrane, creating an electrochemical gradient (electrogenic transport).
One of the most important pumps in animals cells is the sodium-potassium pump (Na + -K + ATPase), which maintains the electrochemical gradient (and the correct concentrations. Autoregulation of the electrogenic sodium pump.
Ayrapetyan SN, Suleymanyan MA, Saghyan AA, Dadalyan SS. The dependence of electrogenic sodium pump activity on changes in the cell volume of Helix pomatia neurons with different levels Cited by: The electrogenic sodium pump of the frog retinal pigment epithelium.
Miller SS, Steinberg RH, Oakley B 2nd. It was previously shown that ouabain decreases the potential difference across an in vitro preparation of bullfrog retinal pigment epithelium (RPE) when applied to the apical, but not the basal, membrane and that the net basal-to-apical Cited by: The electrogenic pump was stopped by removing the intracellular ATP.
The ATP-dependent part of the membrane potential was large at pH1 andbut decreased in. The sodium-potassium pump is called an electrogenic pump because it A) pumps equal quantities of Na and K across the membrane.
⁺ ⁺ B) pumps hydrogen ions out of the cell. C) contributes to the membrane potential. D) ionizes sodium and potassium atoms.The Sodium Potassium Biological Electrogenic Pump Objectives: STEM students learning Biology or Physics at grade level and Higher Education students in a General Biology and or Anatomy and Physiology course.
Audiences: STEM students from high school to higher education undergraduate level. Subjects: General Biology, Physiology and Physics The students would .The sodium-potassium pump is called an electrogenic pump because it A) pumps equal quantities of Na+ and K+ across the membrane.
B) pumps hydrogen ions out of the cell. C) contributes to the membrane potential. D) ionizes sodium and potassium atoms. E) is used to drive the transport of other molecules against a concentration gradient.