Imagine that in a reaction A and B interact and form E. Before E, two more molecules are formed. They are C and D. There is another molecule named Q which can speed up or revert the reaction. The molecule E can also stop the formation of E by interacting with the process. A. What are A, B, C and E? B. What is the molecule Q. What would Q be called? Write down two prominent features of molecule Q. C. What would you call the effect of E on the whole reaction?