GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
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Subject Code: 3130403 Date: 26/11/2019
Subject Name: Basic Biochemistry and Calculations
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Marks
Q.1 (a) Write down the reaction for formation of acetyl Co A from pyruvate 03
(b) Draw structure of Ribose, Glucose, Arabinose and Fructose 04
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(c) Draw TCA cycle showing appropriate components and give its 07 Importance.
Q.2 (a) Write the net biochemical equation for the metabolism of a molecule of 03 glucose by glycolysis and the citric acid cycle, including all cofactors.
(b) Draw glyoxylate cycle with related . 04
(c) Explain Gluconeogenesis pathway with its significance 07
OR
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(c) What are various metabolic disorders, and what can be done about it ? 07 discuss
Q.3 (a) Why peptide bond has planer configuration? 03
(b) Write a short note on fate of pyruvate after glycolysis 04
(c) What do you mean by domain and motif? Explain super secondary 07 structural elements with drawings.
OR
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Q.3 (a) Enlist and explain functions of carbohydrate in biological system. 03
(b) Soy sauce is pre- pared by fermenting a salted mixture of soybeans and 04 wheat with several microorganisms, including yeast, over a period of 8 to 12 months. The resulting sauce (after solids are removed) is rich in lactate and ethanol. How are these two compounds produced? To prevent the soy sauce from having a strong vin- egary taste (vinegar is dilute acetic acid), oxygen must be kept out of the fermentation tank. Why?
bonding patterns.
Q.4 (a) What do you mean by nucleotides? Give examples and importance. 03
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(b) How can you decide the secondary structure from Ramachandran map? 04
(c) Explain the process of digestion in stomach. 07
OR
Q.4 (a) What would happen if you decrease the pH of any amino acid solution? 03
(b) What are weak acids and weak base? What is significance of Ka and Kb 04 values?
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(c) Explain the process of oxidation of saturated C-16 fatty acid. 07
Q.5 (a) Explain about carnitine shuttle pathway. 03
(b) Explain beer lamberts law and its importance. 04
(c) Why do buffers buffer at specific pH for example citrate buffer has the 07 highest buffering capacity at pH 6.2?
OR
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Q.5 (a) Nomenclature of Lipids. 03
(b) Explain about importance of vitamin B and vitamin K 04
(c) Explain in detail the Urea cycle and it relation. with water regulation in 07 mammals
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