Question

Select the correct experimental observation, that supports the fluid mosaic model of membrane structure.

• A. The capping of fluorescent antibodies specific for cell-surface receptors
• B. The presence of the cytoskeleton underneath the surface of the membrane
• C. The measurement of ions flowing through ion-gated channel proteins by patch clamps
• D. The pseudopodial movement of amoeba
• E. The scaffolding and kinetic proteins associated with the movement of cilia

Answer 1

The correct option is A The capping of fluorescent antibodies specific for cell-surface receptors

The fluid mosaic model of the plasma membrane, refers to the plasma membrane as a fluid combination of phospholipids, cholesterol, and proteins. The carbohydrates attached to lipids (glycolipids) and to proteins (glycoproteins) extend from the outward-facing surface of the membrane.The fluid property of these membranes were determined through observation in labeling experiments, x-ray diffraction and calorimetry. These studies and recent advances in fluorescence microscopy and structural biology validates the fluid mosaic model.