Microbiology – Biotechnology-BSC-Nagpur-Winter-2018

Bachelor of Science (B.Sc.) Semester-I Examination
BIO-TECHNOLOGY (Microbiology)

Optional Paper—1
Time : 3 Hours
Maximum Marks : 50

N.B. :— (1) All questions are compulsory and carry equal marks.
(2) Draw well labelled diagram wherever necessary.

1. Describe the contributions of Louis Pasteur in the field of Microbiology. [10M]

                                                        OR
Write notes on :
(a) Significance of oil immersion objectives. [2½M]

(b) Principle and procedure of endospore staining. [2½M]

(c) Numerical aperture and its importance. [2½M]

(d) Comparison between optical and electron microscope. [2½M]

2. Describe the structure of gram negative bacterial cell wall in detail. [10M]

                                                            OR

Describe the process of endospore formation in bacteria.[10M]

3. Describe different shapes and symmetries of viruses with example. [10M]

                                                             OR

(a) Give the brief idea of lysogeny in viruses. [5M]

(b) Describe the morphology and cell membrane of archea. [5M]

4. Describe the basic nutritional requirements of bacteria. [10M]

                                                             OR

Write notes on :
(a) Selective and differential media. [5M]

(b) Enriched and Enrichment media. [5M]

5. Solve any TEN :

(i) What is resolving power ? [1M]

(ii) Name two gram positive bacteria. [1M]

(iii) Give one application of fluorescent microscopy.[1M]

(iv) What is a plasmid ? [1M]

(v) What are peritrichous flagella ? [1M]

(vi) What is the function of capsule in bacteria ? [1M]

(vii) Give one difference between bacteria and virus. [1M]

(viii) What is a bacteriophage ? [1M]

(ix) Name one animal cell virus. [1M]

(x) What are photoautotrophs ? [1M]

(xi) What is the source of agar-agar ? [1M]

(xii) What are synthetic media ? [1M]