12.What is radioactive dating? a. Using radioactive material to extend the shelf life of food products.

b. The process by which the age of an object is estimated based on the amount of certain radioactive nuclides present.

c. Using radioactive materials to study the body’s processes.

d. When the Hulk asks you to Prom.

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products