Nucleic Acids (RNA and DNA) are made up of a series of nucleotides. The center of an amino acid is the carbon bonded to four different groups. The fourth group, R, is different for each amino acid. A nucleotide is composed of a five-carbon sugar, a nitrogenous base and a phosphate group.
A molecule is an electrically neutralgroup of two or more atoms held together by chemical bonds.Molecules are distinguished from ions by their lack of electrical charge.
Amino acids have a two-carbon bond. One of the carbons is part of a group called thecarboxyl group(COO-). A carboxyl group is made up of one carbon (C) and two oxygen (O) atoms.
