Macromolecules-Biotechnology-BSC-Nagpur-Summer17

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

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. What is Differential Staining ? Describe in detail Gram Staining. [10M]

OR

Discuss principle, construction and application of Transmission Electron Microscopy. [10M]

2. Define Endospore. Explain the process of endospore formation in bacteria. [10M]

OR

Describe structure of flagella of Gram positive and Gram negative bacteria. [10M]

3. (a) Explain lysogenic cycle of viral replication. [5M]

(b) Write a note on Viral symmetry. [5M]

OR

Describe in detail the lytic cycle of viral replication. [10M]

4. (a) Define Nutrition. How can bacteria be classified on the basis of nutritional requirements ? [5M]

(b) Explain the various components of non-synthetic medium. [5M]

OR

(c) Explain with one example :
(i) Enrichment Media
(ii) Differential Media. [5M]

(d) What are Micronutrients and Macronutrients ? Give its example. [5M]

5. Solve any TEN :—
(i) What is a plasmid ? [1M]

(ii) Define resolving power of microscope. [1M]

(iii) Write the function of chromogen. [1M]

(iv) Why oil is used in oil immersion objective ? [1M]

(v) What is meant by Streptococcus ? [1M]

(vi) What is the function of fimbriae ? [1M]

(vii) Write any one difference between bacterial and archeal cell membrane. [1M]

(viii) Define virion. [1M]

(ix) Name two distinct groups of archaea. [1M]

(x) Give any two examples of selective media. [1M]

(xi) Define synthetic media. [1M]

(xii) Name any two enriched media. [1M]