Examlex
A Julian date represents the number of hours that have passed since January 1,4712 B.C._________________________
Cholesterol
A waxy, fat-like substance found in all cells of the body, important for making hormones, vitamin D, and substances that help digest foods.
Steroids
A class of lipid molecules that includes hormones, vitamins, and cholesterol, which serve various functions in organisms.
Phospholipids
A class of lipids that are a major component of all cell membranes, containing two fatty acids, a phosphate group, and a glycerol molecule.
Polymer
Macromolecule consisting of covalently bonded monomers; for example, a polypeptide is a polymer of monomers called amino acids.
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