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Carbohydrates Part 1

20 Questions
Carbohydrates Part 1

Carbohydrates are polyhydroxy aldeshydes or polyhydroxy ketoses.

Questions and Answers
  • 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. 
    • 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

  • 15. 
    In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines
    • A. 

      D or L series

    • B. 

      Dextro or levorotatory

    • C. 

      α and β anomers

    • D. 

      Epimers

  • 16. 
     The carbohydrate of the blood group substances is
    • A. 

      Sucrose

    • B. 

      Fucose

    • C. 

      Arabinose

    • D. 

      Maltose

  • 17. 
    Erythromycin contains
    • A. 

      Dimethyl amino sugar

    • B. 

      Trimethyl amino sugar

    • C. 

      Sterol and sugar

    • D. 

      Glycerol and sugar

  • 18. 
    A sugar alcohol is
    • A. 

      Mannitol

    • B. 

      Trehalose

    • C. 

      Xylulose

    • D. 

      Rabinose

  • 19. 
    The major sugar of insect hemolymph is
    • A. 

      Glycogen

    • B. 

      Pectin

    • C. 

      Trehalose

    • D. 

      Sucrose

  • 20. 
    The sugar found in DNA is
    • A. 

      Xylose

    • B. 

      Ribose

    • C. 

      Deoxyribose

    • D. 

      Ribulose