Lipids Enzymes 22 Carbohydrates 21 Amino acids- proteins 13 Animal nutrition 13 Carbohydrate 13 Energy metabolisms 13 Lipid metabolisms 13 Nucleoproteins 13 vitamins- co enzymes 13 Nutrition 8 Aminoacid metabolism 7 Nucleic acids 5 Amino acids 4 Phenolics 4 Proteins 4 Aminoacids 3 Bio chemistry 3 Vitamins 3 Bacterial growth 2 Biochemistry 2 Bioenergetics 2 Cell fractionation 2 AIDS 1 Agricultural chemisty 1 Biomolecules 1 Biomolecules and cell 1 Biosynthesis 1 Cancer 1 Cell Fractionation 1