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Question
Biology
Posted 7 months ago
Which of the following best describes the structure of a biological membrane?
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Answer from Sia
Posted 7 months ago
Answer
The structure of a biological membrane is best described by the fluid mosaic model.
Solution
a
Phospholipid Bilayer: The membrane is primarily composed of a double layer of phospholipids, with hydrophilic (water-attracting) heads facing outward and hydrophobic (water-repelling) tails facing inward
b
Proteins: Embedded within this bilayer are various proteins that serve functions such as transport, signal transduction, and structural support
c
Cholesterol: Cholesterol molecules are interspersed within the phospholipid bilayer, contributing to membrane fluidity and stability
Key Concept
Fluid Mosaic Model
Explanation
The fluid mosaic model describes the biological membrane as a dynamic and flexible structure composed of a phospholipid bilayer with embedded proteins, cholesterol, and carbohydrates, allowing for various functions and interactions.
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