The binding of sodium ions (Na+) to a membrane protein is one of the first steps in initiation of the sodium-potassium pump that moves these ions across the membrane. The picture shows the inital set up in this process. How does the protein get the energy needed to continue the process of moving the (Na+) across the cell membrane?
The binding of sodium ions (Na+) to a membrane protein is one of the first steps in initiation of the sodium-potassium pump that moves these ions across the membrane. The picture shows the inital set up in this process. How does the protein get the energy needed to continue the process of moving the (Na+) across the cell membrane?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:The binding of sodium ions (Na+) to a membrane protein is one of the first steps in initiation of the
sodium-potassium pump that moves these ions across the membrane. The picture shows the
inital set up in this process. How does the protein get the energy needed to continue the process
of moving the (Na+) across the cell membrane?
Membrane Protein
ONa+
Inside the Cell
A.
O
O Nat
oc
Outside the Cell
Con
Mitochondria will attach to the protein and provide the energy to push the Na+
through the protein.
Energy from ADP is released and a channel in the membrane protein permanently
B. opens, resulting in the passage of
the Nat.
Energy produced from the difference in solute concentration on both sides of the
O c. membrane pulls the Na+ through the
protein.
Con
с
ATP attaches to the protein and releases a phosphate, making energy available to
OD. change the shape of the protein
and allowing the passage of the Nat.
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