ENZYMES,HORMONES & VITAMINS
ENZYMES ENZYMES are true catalyst, greatly enhance the rate of specific reaction that would otherwise occurs only very slowly.They cannot change the equilibrium point of reaction they promote nor they used up or permanently changed by these reactions. HOW ENZYMES WORKS ?- This phenomenon is also called as CATALYSIS . DNA in each cell has message for production of enzymes. Cell uses this information. ENZYMES retain their ability even after extraction from cell. They are synthesised by the living cell. Enzyme contain a non- protein part called PROSTHETIC GROUP . It is tightly bound to enzyme, some are metal compounds ex- iron-porphyrin complex of cytochrome . For enzyme activity some organic compounds and inorganic ions are required. They are loosely bound to enzyme called CO-FACTORS . NAD [NICOTINAMIDE ADENINE DINUCLEOTIDE] precursor of nicotinic acid, FAD [FLAVIN ADENINE DINUCLEOTIDE], the active form of vitamin B2