What is the primary cellular site for the production of polypeptide chains? Ribosomes
There are two important regions of a lipid that provide the structure of the lipid bilayer. Each lipid molecule contains a hydrophilic region, also called a polar head region, and a hydrophobic, or nonpolar tail region
A it can be lost during an organisms lifetime
Lithium, Boron, Florine, Silicon, Vanadium, Chromium, Manganese, Zinc, Copper, Nickel, Cobalt, Iron, Arsenic (yes, but in very small amounts), Selenium, Bromine, Strontium, Molybdenum, and Iodine.