Question

biologists use the fluid mosaic model to describe membrane structure. which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements. the kinky tails of some proteins help keep the membrane fluid by preventing the component molecules from packing solidly together. because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane. the diverse proteins found in and attached to membranes perform many important functions. the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center. membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer. submit request answer part b complete previous part(s) part c complete previous part(s) provide feedback

Explanation:

1. In the fluid - mosaic model, membranes are fluid, allowing membrane proteins and phospholipids to drift. This is due to the nature of the lipid - bilayer and the interactions between its components.
2. Membrane proteins have diverse functions such as transport, cell - cell recognition, and catalysis.
3. The membrane is primarily composed of a phospholipid bilayer with hydrophilic heads facing the aqueous environments (intracellular and extracellular) and hydrophobic tails clustered in the center to avoid water.
4. It is the kinky tails of unsaturated fatty acids in phospholipids, not proteins, that prevent tight packing and keep the membrane fluid.
5. Carbohydrates are not embedded in the phospholipid bilayer but are usually attached to proteins (glycoproteins) or lipids (glycolipids) on the outer surface of the membrane.

Answer:

• Because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.
• The diverse proteins found in and attached to membranes perform many important functions.
• The framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.