- Protein: Protein content in cytoplasm is 7-10%. It contains three types of proteins.
(i) Simple proteins: Among the simple proteins, albumin, globulin, histone, prolamin and protamine are prominent.
(ii) Complex proteins: The main major complex proteins are glycoproteins, nucleoproteins, lipoproteins, chromoproteins, phosphoproteins etc.
(iii) Produced proteins: Produced proteins are mainly proteose, peptone, lipase, protean, peptide etc.
- Lipids: Lipid content in cytoplasm is 1-3%. The major lipids in the cytoplasm are glycerides, glycolipids, phospholipids, lipoproteins, cholesterol, etc.
- Carbohydrate: Carbohydrate content in cytoplasm is 1-1.5%. It contains three types of carbohydrates.
(i) Monosaccharides: The main monosaccharides in the cytoplasm are glucose, fructose, galactose etc.
(ii) Disaccharides: Disaccharides are sucrose, maltose, lactose etc.
(iii) Polysaccharides: Polysaccharides are mainly starch and glycogen.
- Enzymes: Cytoplasm contains enzymes and co-enzymes.
- Nucleic Acid: Cytoplasm contains DNA and RNA as nucleic acids.