Calcium is an important regulator of the citric acid cycle. Calcium is transported across the mitochondrial inner membrane by a Ca²- 2+ uniporter that is driven by the negative potential inside the matrix. Part A Assuming a membrane potential across the inner membrane of 172 mV (inside negative), calculate the ratio of the [Ca2+] in the matrix to that in the cytoplasm ([Ca2+]m/[Ca²+]c) that would exist at equilibrium (i.e., AG = 0). Express your answer using two significant figures. [Ca2+]m [Ca2+] = ΤΟ ΑΣΦ Submit Request Answer Part B ? Cytoplasmic [Ca2+] is on the order of 10-7 M in a healthy cell. Based on your answer in Part A, calculate the [Ca2+] that would exist in the matrix at equilibrium. Express your answer to two significant figures and include the appropriate units. ☐ μÅ ? Value Units
Calcium is an important regulator of the citric acid cycle. Calcium is transported across the mitochondrial inner membrane by a Ca²- 2+ uniporter that is driven by the negative potential inside the matrix. Part A Assuming a membrane potential across the inner membrane of 172 mV (inside negative), calculate the ratio of the [Ca2+] in the matrix to that in the cytoplasm ([Ca2+]m/[Ca²+]c) that would exist at equilibrium (i.e., AG = 0). Express your answer using two significant figures. [Ca2+]m [Ca2+] = ΤΟ ΑΣΦ Submit Request Answer Part B ? Cytoplasmic [Ca2+] is on the order of 10-7 M in a healthy cell. Based on your answer in Part A, calculate the [Ca2+] that would exist in the matrix at equilibrium. Express your answer to two significant figures and include the appropriate units. ☐ μÅ ? Value Units
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 2SQE: One of the important uses of the Nernst equation is in describing the flow of ions across plasma...
Related questions
Question
![Calcium is an important regulator of the citric acid
cycle. Calcium is transported across the
mitochondrial inner membrane by a Ca²-
2+
uniporter that is driven by the negative potential
inside the matrix.
Part A
Assuming a membrane potential across the inner membrane of 172 mV (inside negative), calculate the ratio of the
[Ca2+] in the matrix to that in the cytoplasm ([Ca2+]m/[Ca²+]c) that would exist at equilibrium (i.e., AG = 0).
Express your answer using two significant figures.
[Ca2+]m
[Ca2+]
=
ΤΟ ΑΣΦ
Submit
Request Answer
Part B
?
Cytoplasmic [Ca2+] is on the order of 10-7 M in a healthy cell. Based on your answer in Part A, calculate the [Ca2+]
that would exist in the matrix at equilibrium.
Express your answer to two significant figures and include the appropriate units.
☐
μÅ
?
Value
Units](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47c22684-0780-4dbb-b668-3d49e6bb058b%2Fe66fb141-5dc3-4b1b-b095-4d31cd371dca%2Fnd9kxzc_processed.png&w=3840&q=75)
Transcribed Image Text:Calcium is an important regulator of the citric acid
cycle. Calcium is transported across the
mitochondrial inner membrane by a Ca²-
2+
uniporter that is driven by the negative potential
inside the matrix.
Part A
Assuming a membrane potential across the inner membrane of 172 mV (inside negative), calculate the ratio of the
[Ca2+] in the matrix to that in the cytoplasm ([Ca2+]m/[Ca²+]c) that would exist at equilibrium (i.e., AG = 0).
Express your answer using two significant figures.
[Ca2+]m
[Ca2+]
=
ΤΟ ΑΣΦ
Submit
Request Answer
Part B
?
Cytoplasmic [Ca2+] is on the order of 10-7 M in a healthy cell. Based on your answer in Part A, calculate the [Ca2+]
that would exist in the matrix at equilibrium.
Express your answer to two significant figures and include the appropriate units.
☐
μÅ
?
Value
Units
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 4 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
![Human Physiology: From Cells to Systems (MindTap …](https://www.bartleby.com/isbn_cover_images/9781285866932/9781285866932_smallCoverImage.gif)
Human Physiology: From Cells to Systems (MindTap …
Biology
ISBN:
9781285866932
Author:
Lauralee Sherwood
Publisher:
Cengage Learning
![Biochemistry](https://www.bartleby.com/isbn_cover_images/9781305577206/9781305577206_smallCoverImage.gif)
Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning
![Human Physiology: From Cells to Systems (MindTap …](https://www.bartleby.com/isbn_cover_images/9781285866932/9781285866932_smallCoverImage.gif)
Human Physiology: From Cells to Systems (MindTap …
Biology
ISBN:
9781285866932
Author:
Lauralee Sherwood
Publisher:
Cengage Learning
![Biochemistry](https://www.bartleby.com/isbn_cover_images/9781305577206/9781305577206_smallCoverImage.gif)
Biochemistry
Biochemistry
ISBN:
9781305577206
Author:
Reginald H. Garrett, Charles M. Grisham
Publisher:
Cengage Learning