Question

Isoprene is the repeating unit in :

• A. vitamin A
• B. terpenes
• C. natural rubber
• D. All of the above

Answer 1

Answer: (D)

All of the above

Nearly all terpenes found in the essential oils of many plants have carbon skeleton made up of isoprene units joined in a regular, head-to-tail way. Natural rubber is also formed by the monomer isoprene. Isoprene chains are also commonly found in biologically active oligomers such as Vitamin A.