In the lab where you work, a graduate student has created a K+ leak channel that is mutated in such a way that it no longer allow K+ ions to move through the channel, and instead allows only Na+ ions to move through the K+ leak channel. Assume that the equilibrium potential of Na+ is +63 mV, the equilibrium potential of K+ is -82mV, and the membrane potential is -60mV. Disregarding the actions of the Na+/K+ pump, how would ions move through the mutated K+ leak channel in a cell with normal ion concentrations? A) Na+ will leave the cell due to both the chemical and electrical gradients until the membrane potential reaches ENa+, B) Na+ will enter the cell due to both chemical and electrical gradients until the membrane potential reaches ENa+. OC) K+ will leave the cell due to both its chemical and electrical gradients until the membrane potential reaches EK+. D) K+ will leave the cell only due to its chemical gradient until it reaches OmV OE) Na+ will leave the cell due to its electrical gradient until the membrane potential reaches OmV.
In the lab where you work, a graduate student has created a K+ leak channel that is mutated in such a way that it no longer allow K+ ions to move through the channel, and instead allows only Na+ ions to move through the K+ leak channel. Assume that the equilibrium potential of Na+ is +63 mV, the equilibrium potential of K+ is -82mV, and the membrane potential is -60mV. Disregarding the actions of the Na+/K+ pump, how would ions move through the mutated K+ leak channel in a cell with normal ion concentrations? A) Na+ will leave the cell due to both the chemical and electrical gradients until the membrane potential reaches ENa+, B) Na+ will enter the cell due to both chemical and electrical gradients until the membrane potential reaches ENa+. OC) K+ will leave the cell due to both its chemical and electrical gradients until the membrane potential reaches EK+. D) K+ will leave the cell only due to its chemical gradient until it reaches OmV OE) Na+ will leave the cell due to its electrical gradient until the membrane potential reaches OmV.
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
Related questions
Question
Give typed full explanation

Transcribed Image Text:mutated K+ leak channel in a cell with normal ion concentrations?
OA) Na+ will leave the cell due to both the chemical and electrical gradients until
the membrane potential reaches ENa+.
OB) Na+ will enter the cell due to both chemical and electrical gradients until the
membrane potential reaches ENa+.
C) K+ will leave the cell due to both its chemical and electrical gradients until
the membrane potential reaches EK+.
D) K+ will leave the cell only due to its chemical gradient until it reaches OmV
E) Nat will leave the cell due to its electrical gradient until the membrane
potential reaches OmV.
OF) K+ will enter the cell due to it's chemical and electrical gradients until the
membrane potential reaches EK+.

Transcribed Image Text:In the lab where you work, a graduate student has created a K+ leak channel that is
mutated in such a way that it no longer allow K+ ions to move through the channel,
and instead allows only Na+ ions to move through the K+ leak channel. Assume that
the equilibrium potential of Na+ is +63 mV, the equilibrium potential of K+ is -82mV,
and the membrane potential is -60mV.
Disregarding the actions of the Na+/K+ pump, how would ions move through the
mutated K+ leak channel in a cell with normal ion concentrations?
A) Na+ will leave the cell due to both the chemical and electrical gradients until
the membrane potential reaches ENa+.
B) Na+ will enter the cell due to both chemical and electrical gradients until the
membrane potential reaches ENa+.
OC) K+ will leave the cell due to both its chemical and electrical gradients until
the membrane potential reaches EK+.
D) K+ will leave the cell only due to its chemical gradient until it reaches OmV
E) Na+ will leave the cell due to its electrical gradient until the membrane
potential reaches OmV.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps

Recommended textbooks for you

Biochemistry
Biochemistry
ISBN:
9781319114671
Author:
Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:
W. H. Freeman

Lehninger Principles of Biochemistry
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY

Biochemistry
Biochemistry
ISBN:
9781319114671
Author:
Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:
W. H. Freeman

Lehninger Principles of Biochemistry
Biochemistry
ISBN:
9781464126116
Author:
David L. Nelson, Michael M. Cox
Publisher:
W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…
Biochemistry
ISBN:
9781118918401
Author:
Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:
WILEY

Biochemistry
Biochemistry
ISBN:
9781305961135
Author:
Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:
Cengage Learning

Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning

Fundamentals of General, Organic, and Biological …
Biochemistry
ISBN:
9780134015187
Author:
John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:
PEARSON