The membranes in a dialysis machine are selectively permeable, meaning they allow certain substances to pass through while blocking others. This selectivity allows toxins and waste products to be removed from the blood while retaining essential substances.
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membrane
the ability to allow materials to cross a membrane
Semipermeable membranes. These membranes allow certain substances to pass through while blocking others based on size, charge, or other properties. Examples include cell membranes and dialysis membranes.
A selectively permeable membrane allows some substances to pass through while blocking others based on size, charge, or other properties. Examples of selectively permeable membranes include cell membranes and dialysis membranes.
are often used in processes like reverse osmosis and dialysis. They are able to selectively filter out molecules based on size, charge, or other properties, enabling the separation of substances in a solution.