Fundamentals of Biochemistry: Life at the Molecular Level 5th Edition

Published by Wiley
ISBN 10: 1118918401
ISBN 13: 978-1-11891-840-1

Chapter 10 - Membrane Transport - Exercises - Page 319: 22

Answer

In the figure you can clearly see the glucose transport into pericytes has resulted in the hyperbolic curve, this indicates a protein mediated sodium-dependent process. If you see this transport protein which transports glucose to pericytes, it has binding sites for the sodium ions. The glucose transport is directly proportion to the concentration of sodium ions, as the sodium concentration increases, the glucose transport also increases, when all the sodium ions site on the transport proteins are occupied by sodium, then the glucose transport will occur at a maximum rate. If you see the transport of glucose in endothelial cell, it is a straight line occurring at a constant pace, so surely it is not sodium dependent transport as increase in sodium concentration is not showing any effect on glucose transport and it is occurring at the same pace irrespective of sodium ions presence.

Work Step by Step

In the figure you can clearly see the glucose transport into pericytes has resulted in the hyperbolic curve, this indicates a protein mediated sodium-dependent process. If you see this transport protein which transports glucose to pericytes, it has binding sites for the sodium ions. The glucose transport is directly proportion to the concentration of sodium ions, as the sodium concentration increases, the glucose transport also increases, when all the sodium ions site on the transport proteins are occupied by sodium, then the glucose transport will occur at a maximum rate. If you see the transport of glucose in endothelial cell, it is a straight line occurring at a constant pace, so surely it is not sodium dependent transport as increase in sodium concentration is not showing any effect on glucose transport and it is occurring at the same pace irrespective of sodium ions presence.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.