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.

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic