Which of the following statement is correct about the mechanism of an enzyme-catallysed reaction?A. An enzyme begins its action by forming a monovalent enzyme-substrate complexB. An enzyme promotes the appropriate chemical reaction in the enzyme-subtract complex to give an enzyme-product complex?C. The formation of an enzyme-substrate complex, its conversion to enzyme-product complex and the decomposition of the latter to product and enzyme are all reversible reactionsD. All are correct

Which of the following statement is correct about the mechanism of an

1.	Which of the following statement is correct about the mechanism of an enzyme-catallysed reaction?A. An enzyme begins its action by forming a monovalent enzyme-substrate complexB. An enzyme promotes the appropriate chemical reaction in the enzyme-subtract complex to give an enzyme-product complex?C. The formation of an enzyme-substrate complex, its conversion to enzyme-product complex and the decomposition of the latter to product and enzyme are all reversible reactionsD. All are correct
Answer» Correct Answer - D In case of enzymatic reaction, the enzyme is so built that it binds to the substrate in a specific manner. The enzymatic reaction may proceed through the following four stages: (i) the formation of complex between enzyme and substrate `(ES)`, (ii) the conversion of this complex to an enzymes intermediate complex `(EI)` and (iii) further conversion to a complex between enzyme and product `(EP)` and (iv) the dissociation of the enzyme - product complex leaving the enzyme enchanged. Enzyme + substrate `hArr` enzyme - substrate complex `hArr` enzyme - product Enzymes are needed only is small quantities for the progress or a reaction. Similar to the action of chemical catalysts, enzymes are said to reduce the magnitude of activation energy. For example, activation energy for acid hydrolysis of sucrose is `6.22 kJ mol^(-1)`, white the activation energy is only `2.15 kJ mol^(-1)` when hydrolysed by the enzyme, sucrase.