Question

The plasma membrane has a double layer of phospholipids with _____ dispersed throughout.

A) carbon
B) phosphorus
C) fats
D) protein

Answer 1

Lipid—that is, fatty—molecules constitute about 50% of the mass of most animal cell membranes, nearly all of the remainder being protein. There are approximately 5 × 106 lipid molecules in a 1 μm × 1 μm area of lipid bilayer, or about 109 lipid molecules in the plasma membrane of a small animal cell. All of the lipid molecules in cell membranes are amphipathic (or amphiphilic)—that is, they have a hydrophilic (“water-loving”) or polar end and a hydrophobic (“water-fearing”) or nonpolar end

Answer 2

thanks

Answer 3

no prblm @aselageb