Select the Two characteristics that these proteins have in common.
A( They contain nitrogen
B( They are made of disaccharides.
C. They are Composed of amino acids.
D( They form by using fatty acids and glycerin.
E( They Contain a base, sugar and a phosphate group.
The common property of all proteins is that they consist of long chains of α-amino (alpha amino) acids. The general structure of α-amino acids is shown in . The α-amino acids are so called because the α-carbon atom in the molecule carries an amino group (―NH2); the α-carbon atom also carries a carboxyl group (―COOH).
