Which of the following types of biomolecules is characterized by a repeating sequence of sugar-phosphate units?

A Proteins
B Lipids
C Nucleic acids ✓
D Carbohydrates

Explanation

Nucleic acids, such as DNA and RNA, are composed of a repeating sequence of sugar-phosphate units, with nitrogenous bases attached to the sugar molecules.

Mnemonic

Nucleic = nucleus → central to genetic info

Source

Campbell Biology
Fundamentals of Biochemistry Biochemistry Biomolecules Easy MEDICAL Confidence: high