Microbiology – Biotechnology -BSC-Nagpur-Summer-2019

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

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

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

1. (a) Describe the contribution of Robert Koch in microbiology. [5M]

(b) Describe the principle and application of TEM. [5M]

OR

(c) What is a stain ? Describe the acidic, basic and neutral stains with suitable example.[5M]

(d) Describe the principle and procedure of Gram Staining. [5M]

2. (a) Draw a well labelled diagram of fluid mosaic model of cell membrane. [2½M]

(b) Write the functions of mesosomes. [2½M]

(c) Describe the various cell arrangements in cocci with examples. [2½M]

(d) Differentiate Capsule and Slime Layer. [2½M]

 OR

 (e) Draw a well labelled diagram of a typical bacterial cell. [2½M]

(f) Give a brief account on structure of flagella. [2½M]

(g) Describe the structure of Endospore. [2½M]

(h) Explain R-Plasmid. [2½M]

3. (a) Differentiate bacterial and archaeal cell membrane. [5M]

(b) Write the general characteristics of viruses. [5M]

OR

   Describe the Lytic cycle of viruses. [10M]

4. (a) Classify the microorganism on the basis of nutritional requirements. [5M]

(b) Describe the synthetic media with examples. [5M]

OR

 (c) Explain the selective media with suitable examples. [5M]

(d) Describe the basic nutritional requirements of microorganism. [5M]

5. Solve any TEN :

(i) What is pasteurization ? [1M]

(ii) What is Abiogenesis ? [1M]

(iii) Name one Acid-Fast Bacteria. [1M]

(iv) Which part of bacterial spore contains calcium dipicolinate ? [1M]

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

(vi) What is a conjugative plasmid ? [1M]

(vii) Name a virus having icosahedral symmetry. [1M]

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

(ix) Give any one example of an RNA-Virus. [1M]

(x) What are photoautotrophs ? [1M]

(xi) Write the example of Chemolithoautotrophs. [1M]

(xii) What is the chemical nature of Agar Agar ? [1M]