Which of the following carbohydrates is a key component of the glycosaminoglycan hyaluronic acid?

A Glucose
B Galactose
C N-acetylglucosamine ✓
D Iduronic acid

Explanation

Hyaluronic acid is a glycosaminoglycan composed of repeating disaccharide units of glucuronic acid and N-acetylglucosamine.

Source

Harper's Illustrated Biochemistry
Carbohydrate Metabolism Biochemistry Glycosaminoglycans Hard MEDICAL Confidence: high