Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter5: Membranes And Transport
Section: Chapter Questions
Problem 10TYK: Using the principle of diffusion, a dialysis machine removes waste solutes from a patients blood....
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Question
Explain the difference between simple and facilitated diffusion. This is a hw question
Why is simple diffusion the only possible mechanism of potential movement of molecules across the dialysis membrane in experiment 2?
Expert Solution
Step 1
Simple diffusion and facilitated diffusion are the same in which transport of substances occurs through the concentration gradient.
In Simple diffusion,the transported substances are mainly non polar molecules which can pass through the phospolipids of the plasma membrane.
In facilitated diffusion,the transported substances pass through the plasma membrane through specialied membrane channels along the concentration gradient and these are mainly like glucose,Sodium ions, Potassium ions etc..
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