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Posted Date: 31 Oct 2009 Posted By: Sree.... Member Level: Platinum

2007 Andhra Pradesh State Jawaharlal Nehru Technological University Code No: RR212304 II B.Tech I Semester Supplimentary Examinations, November 2007 BIO-CHEMISTRY [ Set No. 4] Question paper

Course: B.Tech

University: Jawaharlal Nehru Technological University

Code No: RR212304 Set No. 4
II B.Tech I Semester Supplimentary Examinations, November 2007
BIO-CHEMISTRY
(Bio-Technology)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks

1. (a) What is a disaccharide ?
(b) Give two examples with structure?
(c) Discuss the role of any two disaccharides is nutritional metabolism? [3+4+9]
2. Write briefly on
(a) Dextrans
(b) Glycosaminglycans
(c) Glycosidic bond [5+5+6]
3. Write the structure and functions of the following:
(a) Palmitic acid
(b) Arachidonic acid
(c) Linoleic acid
(d) a-linolenic acid [4x4]
4. What is a peptide linkage? Describe how aminoacid sequence determines primary
structure of proteins. [3+13]
5. Describe the pathways in the biosynthesis of aromatic amino acids. [16]
6. Describe the pathways involved in:
(a) Glycogenesis
(b) Glycogenolysis [8+8]
7. Where are the pigments of photo systems located in plants and bacteria? Write
their role. [4+12]
8. Plants have been said to face a dilemma of either “thirst or starvation”. Explain
what this dilemma refers to. What leaf structures regulate the balance between
thirst and starvation? What ratio is used to compare plants with regards to their
efficiency of water use? [4+8+4]

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