a) When mixed with water, phospholipids assemble themselves into a lipid bilayer with the polar head oriented inside and the nonpolar tail oriented outside. (b) While lipid bilayers constitute the main fabric of cell membranes, proteins and cholesterol are embedded in these membranes. (c) The two fatty acid side chains form the nonpolar tail and the phosphodiester group forms the polar head. (d) The phospholipid bilayer of cell membranes is also known as a fluid mosaic structure. (e) In the fatty acid tails of the lipid bilayer, the higher the degree of unsaturation, the better the bilaver nacking and the more rigid resuulting cell membrane

a) When mixed with water, phospholipids assemble themselves into a lipid bilayer with the polar head oriented inside and the nonpolar tail oriented outside. (b) While lipid bilayers constitute the main fabric of cell membranes, proteins and cholesterol are embedded in these membranes. (c) The two fatty acid side chains form the nonpolar tail and the phosphodiester group forms the polar head. (d) The phospholipid bilayer of cell membranes is also known as a fluid mosaic structure. (e) In the fatty acid tails of the lipid bilayer, the higher the degree of unsaturation, the better the bilaver nacking and the more rigid resuulting cell membrane

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter3: Biological Macromolecules

Section: Chapter Questions

Problem 2VCQ: Figure 3.23 Which categories of amino acid would you expect to find on the surface of a soluble...

See similar textbooks

Similar questions

What properties define the phospholipids that make up the lipid bilayer?
What intermolecular forces stabilize a lipid bilayer?
What advantage do unsaturated phospholipids have over saturated phospholipids in the lipid bilayer?
At what level of protein structure do multiple polypeptide chains interact?
Describe the structural and functional properties of lipid rafts
If a lipid raft is typically 70 nm in diameter and each lipid molecule has a diameter of 0.5 nm, about how many lipid molecules would there be in a lipid raft com- posed entirely of lipid? At a ratio of 50 lipid molecules per protein molecule (50% protein by mass), how many proteins would be in a typical raft? (Neglect the loss of lipid from the raft that would be required to accommodate the protein.)
What is the structure of lipid bilayers?
Figure 3.23 Which categories of amino acid would you expect to find on the surface of a soluble protein, and which would you expect to find in the interior? What distribution of amino acids would you expect to find in a protein embedded in a lipid bilayer?
Describe the four levels of protein structure. How do a proteins side groups influence its interactions with other substances? What happens when a protein is denatured?
The structure of a lipid bilayer is determined by the particular properties of its lipid molecules. What would happen if A. Phospholipids had only one hydrocarbon tail instead of two?B. The hydrocarbon tails were shorter than normal, say, about 10 carbon atoms long?C. All of the hydrocarbon tails were saturated?D. All of the hydrocarbon tails were unsaturated?E. The bilayer contained a mixture of two kinds of phospholipid molecules, one with two saturated hydrocarbon tails and the other with two unsaturated hydrocarbon tails?F. Each phospholipid molecule were covalently linked through the end carbon atom of one of its hydrocarbon tails to a phospholipid tail in the opposite monolayer?
Draw the basic structure of a lipid bilayer and label thehydrophilic and hydrophobic regions. Why is the cytoplasmicmembrane a good permeability barrier?
Define Membrane Lipids.