Biologists use the fluid mosaic model to descfibe membrane structure. Which statements about the fluid mosaic structure of a mem

Question

4 months ago

7

Biologists use the fluid mosaic model to descfibe membrane structure. Which statements about the fluid mosaic structure of a mem

brane 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.

Biology

1 answer:

Tresset [2.2K] · Answer 1 · 2026-02-22T07:32:41+03:00

Answer:A, B, C

Explanation:

A. The arrangement of phospholipids occurs in bilayers with the polar head groups facing both the extracellular and cytoplasmic sides, while the hydrophobic core remains in the center.

The plasma membrane also consists of membrane proteins.

B. Certain integral proteins function as transmembrane proteins that traverse the membrane and create a hydrophilic channel, specifically selective for certain solutes like enzymes, antigens, and hormones.

Peripheral proteins are located on the surface of the bilayer and act as signaling proteins.

C. Membrane lipid bilayers are not rigid or fixed. They exhibit free lateral movement of their components, thus the membrane is fluid in nature. This fluidity facilitates processes like endocytosis and exocytosis.