Question

Biologists use the fluid mosaic model to descfibe membrane structure. Which statements about the fluid mosaic structure of a membrane are correct? Select the three correct statements.
a. The framework of a membrane is a bilayer of phospholipids with their hydrophillic heads facing the aqeous environment inside and outside of the cell and their hydrophobic tails clustered in the center.
b. The diverse proteins found in and attached to membranes perform many important functions.
c. Because membranes are fluid, membrane protrins and phospholipids can drift about in the membrane.
d. Membranes include a mosaic, or mix of carbohydrates embedded in a phospholipids bilayer.
e. The kinky tails of some proteins help keep the membrane fluid by preventing the component molecules from packing solidly together.

Answer 1

Answer:A, B, C

Explanation:

A. The phospholipids are arranged in bilayers withe the Polar head groups oriented towards the extracellular side and the cytoplasmic side with a hydrophobic core.

The plasma membrane also contain membrane protein

B. Some Integral protein are Transmembrane protein the span the membrane and provide a hydrophilic channel and are selective for particular solute such as enzymes, antigens, hormones

The peripheral protein exit on the surface of the bilayer the serve as signal protein

C. The membrane lipid bilayers are not static or rigid. They show free lateral movement of its components hence the membrane is fluid in nature. Fluidity enables the membrane to perform endocytosis and exocytosis