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Biology
Posted 7 months ago
How is living plasma membrane both similar and different in comparison to the dialysis tubing test used in this expermient
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Answer from Sia
Posted 7 months ago
Answer
The living plasma membrane and dialysis tubing have similarities in selective permeability but differ in structure and complexity.
Solution
a
Selective permeability: Both the living plasma membrane and dialysis tubing allow certain molecules to pass while blocking others
b
Composition: The plasma membrane is composed of a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates, whereas dialysis tubing is typically made of a synthetic material like cellulose
c
Complexity: The plasma membrane has complex functions such as signal transduction and cell recognition, which are not present in dialysis tubing
Key Concept
Selective permeability is a shared feature between living plasma membranes and dialysis tubing.
Explanation
While both serve as barriers that can selectively allow substances to pass, the plasma membrane's structure and functions are far more complex than those of dialysis tubing, which is a simplified model used in experiments.

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