The Class Of Macro Molecules That Are Not Composed Of Repeating Structural Units:
a. Lipids
b. Carbohydrates
c. Proteins
d. Nucleic acids
The correct option is (a) Lipids.
Repeating Unit
A unit (part) whose duplication (repetition) will produce a molecule called a polymer. The three forms of polymers containing repeating units are terpolymer, homopolymer, and copolymer.