Nalanda Open University 2010 M.Sc Chemistry Part–I, –VI ( of Biomolecules) Annual , - Question Paper
M.Sc. Chemistry Part–I, Paper–VI (Chemistry of Biomolecules) Annual Examination, 2010
IN ALAIN DA OPEN UNIVERSITY M.Sc. Chemistry
Part-1, Pa per-VI (Chemistry of Biomolecules)
Annual Examination, 2010 Full Marks : 80 l ime : 3 Hours.
Ansiver ant/ II VL Questions. All questions earn/ equal murks.
1. Summarise the degradative evidences which led to the elucidation of the structure of alkaloid having molecular formula CHNOj belonging to Solanaceae family and has diatating action on the pupils of the eyes.
2. Give I.U.P.A.C nomenclature of open chair form of D(+) glucose. Establish the Kiliani straight chain structure of D(+) glucose. Explain its configuration.
3. I low will you effect any Three of the following conversions ?
(a) Geraniolto ar-terpineol (I)) Citral to cvclocitrals
(c) Citral to p-evmene (d) Citral to ionones.
4. IIow does the dipolar ionic structure of amino acids influence their physical properties ? Discuss the significance of isoelectric points.
5. What is relationship between.
(a) A nucleotide and nucleoside (I)) Rebose and deoxvril>ose
(c) A nucleotide and nucleic acid (d) Chromosome and DNA.
6. Write about I wo essential functions of triacvlglvcerols.
(a) I Ivdrogenation of triacvlglvcerds
(b) Biological functions of triacvlglvcerols
(c) Saponification of triacvlglvcerols.
7. Give synthesis of anv I wo of the following pyrimidine bases:
(a) Uracil (2, 4-Dihvdroxvpvrimidine)
(b) Thymine (5-methvluracil)
(c) Cytosine (4-Amino-2-hvdroxvpvrimidine)
8. What are glycosides ? Give the classification of glycosides. Determine the structure of glycoside bv its synthesis.
9. Write the names and structures of important fattv acids and essential fatty acids with their explanations.
10. Write explanatory notes on anv Three of the following
(a) Wagner-Meerwein rearrangement.
(I)) fi -oxidation of fatty acids.
(c) Blanc's Rule.
(d) Inversion of sucrose.
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