Which of the following is not true about G-protein? A. It is made of amino acids

B. It binds to GTP molecule when activated

C. One molecule activate hundreds of adenylyl cyclase molecules

D. It can act as an enzyme

E. It is activated by G-protein coupled receptor​

D. It can act as an enzyme

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products