Question

The most common carbohydrate monomer is

• A. Maltose
• B. Lactose
• C. Glucose
• D. Galactose

Answer 1

Answer: (C)

Glucose

A monosaccharide is the simplest form of carbohydrate which is composed of carbon, hydrogen, and oxygen. The basic formula of the monosaccharide is C${}_n$H${}_{2n}$O${}_n$. Glucose is a monomer which is formed of six carbon atoms. The molecular formula is C${}_6$H${}_{12}$O${}_6$. While maltose and lactose are disaccharides, galactose is also a monosaccharide which is less common than glucose. So, the correct answer is option C.