Question

Which group belong to the same distinct class?

• A. Sterols, Waxes, Amino acids, Starch
• B. Lipids, RNA, Glycine, Cellulose
• C. DNA, RNA, Nucleosides, Nucleotides
• D. Ribose, Sucrose, Glucose, Maltose

Answer 1

Answer: (D)

Ribose, Sucrose, Glucose, Maltose

Ribose, sucrose, glucose, and maltose all are carbohydrates. RNA contains ribose sugar. It is a five-carbon sugar. The molecular formula is C${}_5$H${}_{10}$O${}_5$. It is a monosaccharide. The phosphorylated form of ribose sugar helps in the several metabolic reactions like glycolysis. Sucrose is formed by the glycosidic linkage between glucose and fructose. The bond is formed between the between C${}_1$ on the glucosyl subunit and C${}_2$ on the fructose unit.

Glucose is a monosaccharide it cannot be hydrolyzed into simpler compounds. The molecular formula is C${}_6$H${}_{12}$O${}_6$.

Maltose is the disaccharide which is formed by the linkage of alpha 1,4 glucose molecules. It is digested by enzyme maltase.

So, the correct answer is option D.