Biochem 322-internal 2005

Universal Science College (B. Sc. Biochemistry) Sixth Semester 2005

Internal Examination Subject: Biochem 322 (Microbiol Biochemistry) Date: July 26, 2005

Full Marks: 100 Pass Marks: 45 Time: 3 hours

Candidates are required to give their answers in their own words as far as practicable. The figure in the margin indicates full marks. (3× ×14 = 42)

Group (A) Long Questions (Any three)

1. Describe characteristic enzymatic system for fatty acid biosynthesis and their inhibitors in bacteria. 2. Describe penicillin and cephalosporin biosynthetic pathways in filamentous fungi. Point out key regulatory steps. 3. Name the different parts of urinary system associated with urinary tract infection (UTI). What are the common causative organisms of UTI? Describe the different routes of infection. 4. Describe mycorrhizae as a symbiotic association between plants and microorganisms. Group (B) Short Questions: (Any six) (6× ×7 = 42) 1. Discuss the prevalence and clinical importance of VISA and hVISA. 2. Describe the recent highlights and remaining gaps in bacterial FA-metabolism. 3. Discribe the compartmentation of gene products for -lactam biosynthetic pathways. 4. Describe how Aspergillus spp. degrade cellulose. 5. What is the purpose of giving antibiotic in combination? Describe with an example of antibiotic used in combination. 6. Describe different routes of transmission of diseases. 7. What is predation? Explain. 8. Explain bacterial biodiversity. Group (C) Write short notes on: (Any eight) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

E-test fab- genes MoA of Vancomycin Carbapenem Pectin degradation Thermophilic fungi Endocarditis Epidemic Diarrhoea Ti-plasmid Rumen microflora Non-legume N2 fixing organisms. ***

(2× ×8 = 16)