A+ rated biochemistry Q/A

CHAPTER 2: CARBOHYDRATES AND CARBOHYDRATE METABOLISM ABOLISM 1. The general formula of monosaccharides is (A) CnH2nOn (B) C2nH2On (C) CnH2O2n (D) CnH2nO2n 2. The general formula of polysaccharides is (A) (C6H10O5)n (B) (C6H12O5)n (C) (C6H10O6)n (D) (C6H10O6)n 3. The aldose sugar is (A) Glycerose (B) Ribulose (C) Erythrulose (D) Dihydoxyacetone 4. A triose sugar is (A) Glycerose (B) Ribose (C) Erythrose (D) Fructose 5. A pentose sugar is (A) Dihydroxyacetone (B) Ribulose (C) Erythrose (D) Glucose 6. The pentose sugar present mainly in the heart muscle is (A) Lyxose (B) Ribose (C) Arabinose (D) Xylose 7. Polysaccharides are (A) Polymers (B) Acids (C) Proteins (D) Oils 8. The number of isomers of glucose is (A) 2 (B) 4 (C) 8 (D) 16 9. Two sugars which differ from one another only in configuration around a single carbon atom are termed (A) Epimers (B) Anomers (C) Optical isomers (D) Stereoisomers 10. Isomers differing as a result of variations in configuration of the —OH and —H on carbon atoms 2, 3 and 4 of glucose are known as (A) Epimers (B) Anomers (C) Optical isomers (D) Steroisomers 11. The most important epimer of glucose is (A) Galactose (B) Fructose (C) Arabinose (D) Xylose 12. α-D-glucose and β -D-glucose are (A) Stereoisomers (B) Epimers (C) Anomers (D) Keto-aldo pairs 13. α-D-glucose + 1120→ + 52.50 ← + 190 β- D-glucose for glucose above represents (A) Optical isomerism (B) Mutarotation (C) Epimerisation (D) D and L isomerism 14. Compounds having the same structural formula but differing in spatial configuration are known as (A) Stereoisomers (B) Anomers (C) Optical isomers (D) Epimers