Question

Each enzyme produced by the body is specific—meaning it is only able to catalyze a reaction with a certain substrate. What causes an enzyme to be specific? The enzyme's surface folds are complementary to the substrate's surface folds. The enzyme has surface receptors that can recognize specific sequences of DNA The enzyme is made out of the same type of molecule as its substrate. The enzyme is only produced an

Answer 1

B.  

The enzyme's surface folds are complementary to the substrate's surface folds.

Answer 2

The unique - tertiary structure of the enzyme is what makes it unique - this in combination with the receptors at the active site confer specificity.