Arrange the following events in the correct order.
a) an enzyme/substrate complex is formed.
b) products leave the active site of the enzyme.
c) a substrate is converted to products and enzyme/products complex is formed.
d) a substrate enters the active site of the enzyme.

D, A, C, B.

Explanation: The enzymatic reaction first requires that the enzyme recognizes its substrate and enters in the enzyme's active site. Then enzyme and the substrate form a complex called enzyme/substrate complex and the substrate is converted to products in the complex and then release from the active site, so the enzyme can bond to another substrate molecule.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.