BSc Biochemistry Sem I ATKT BIO CHEM BIOCHEMISTRY PAPER I Question Paper - Mumbai University | munotes

Questions asked in this paper

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• (i1) Figures to the right indicate full marks

1. Q1 (A) State True or False: 4 marks
   • (i) 1 Normal solution = equivalent weight in solution
   • (11) 1 Dalton is equal to 1 atomic mass unit (i11)Latent heat and specific heat are synonyms
   • (iv) Weak acids have low Ka value
2. Q1 (B) Attempt the following: (Any three) 9 marks
   • (i) If Solution A is at pH 6.0 and solution B is at pH 9.0. Calculate the difference in the H* ion concentration between the two solutions (i1) State True or False giving reason: pH scale is from -14 to 14 (i11)Define molarity and calculate the molarity of sucrose made by dissolving 180 gm in 500 ml of water
   • (iv)Give mechanism of action of basic buffer with suitable example
   • (v) Justify- Water is a universal solvent
   • (vi)Give an account of structure of a water molecule
3. Q1 (C) Attempt the following: (Any two) 12 marks
   • (i) Give detailed account of physiological buffers
   • (ii) Explain the significance of (a) surface tension (b) latent heat and (c) specific heat of water (i11)Write a note on hydrogen bond. Explain the action of polar and non-polar compounds on
   • (iv) Discuss detail the change in entropy of a system when a compound is dissolved in water
4. Q2 (A) State True or False: 4 marks
   • (i) Not all proteins have quaternary structure
   • (ii) Ninhydrin gives purple coloured complex after reaction with all amino acids is an example of fibrous protein
   • (iv)Zwitter ion refers to the amino acid in neutral pH
5. Q2 (B) Attempt the following: (Any three) 9 marks
   • (i) Explain derived proteins (i1) Explain the structure of peptide bond the structure of L-Phenylalanine and D- Serine the significance of Dansyl chloride. Name two alternative reagents that can be used
   • (v) With the help of a reaction, explain a test that can be used to detect the presence of amino acid in a solution
   • (vi)Comment on the classification of proteins based on nutrition
6. Q2 (C) Attempt the following: (Any two) 12 marks
   • (i) Explain the Edman degradation process in detail (i1) Classify proteins on the basis of their shape and function (i11)Giving suitable example elaborate on secondary structure of proteins
   • (iv) Write a detailed note on protein denaturation
7. Q3 (A) State True or False: 4 marks
   • (i) a-D Glucose and B-D Glucose are anomers (i1) Maltose is non-reducing sugar (i11)Ribulose is a pentose sugar
   • (iv) Urine sample of Diabetes mellitus patient will test negative with Benedict's reagent
8. Q3 (B) Attempt the following: (Any three) 9 marks
   • (i) Write a short note on heteropolysaccharides Fructosazones and glucosazones have identical structure. Explain it with the aid of a the reaction of ribose with orcinol
   • (iv) Write a short note on non-digestible carbohydrates
   • (v) Draw the structures of L-Galactose, and D-Glucose
   • (vi) Briefly explain glycosidic bond formation
9. Q3 (C) Attempt the following: (Any two) 12 marks
   • (i) Elaborate on the composition of starch. Also explain action of different types of amylase
   • (11) Classify carbohydrates based on (a) Monomeric units (b) Number of carbon atoms and (c) Functional group with suitable examples contrast: Sucrose and Lactose
   • (iv) In detail, explain the functions attributed to carbohydrates
10. Q4 (a) Define and explain: (Any five) Write elaborate notes on: (Any three) (15) 10 marks
    • (i) Isomerism in carbohydrates Oxidation reactions of glucose of water for life
    • (iv) Weak interactions of biomolecules in aqueous solutions
    • (v) Tertiary structure of proteins
    • (vi) Types of bonds in protein molecule

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