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The Danielli-Davson model of the cell membrane can be modified to include a mosaic of globular proteins embedded in the phospholipid bilayer, with some proteins also extending to the outer surfaces.

(True/False)

User Jalle
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Final answer:

The statement is false because the Danielli-Davson model is an outdated concept that has been superseded by the Fluid Mosaic Model, which allows for a mosaic of proteins to be embedded and mobile within the phospholipid bilayer.

Step-by-step explanation:

False. The Danielli-Davson model of the cell membrane cannot be modified to include a mosaic of globular proteins because it is an outdated model that has been replaced by the Fluid Mosaic Model. Initially, Davson and Danielli proposed a trilamellar structure, also known as a protein-lipid-protein sandwich, with proteins bound only to the polar heads of phospholipids. However, this model was revised by the Fluid Mosaic Model, proposed by Singer and Nicolson in 1972, which described the plasma membrane as a fluid, dynamic mosaic of various components such as phospholipids, cholesterol, proteins, carbohydrates. In this updated model, integral membrane proteins can span the entire phospholipid bilayer, and peripheral proteins may be bound to the exterior or interior surfaces of the membrane, contributing to the membrane's functional diversity and complexity.

User Errol
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