Ion channels are composed of different protein subunits. a. What features of an ion channel determine that ions are able to pass through the channel? Where is this found? b. Potassium channels are selective for potassium ions only. Sodium is a smaller ion than potassium yet is unable to pass through. Explain this behavior. What is the significance of an auxiliary subunit and why is this important? C.

Ion channels are composed of different protein subunits. a. What features of an ion channel determine that ions are able to pass through the channel? Where is this found? b. Potassium channels are selective for potassium ions only. Sodium is a smaller ion than potassium yet is unable to pass through. Explain this behavior. What is the significance of an auxiliary subunit and why is this important? C.

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 3RE

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