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IGNOU MBCE-14 (January 2024 – December 2024) Assignment Questions

PART-(A)

1(a). Explain the contribution of following scientists in the field of microbiology:
(i) Louis Pasteur
(ii) Antonie van Leeuwenhoek
(iii) Robert Koch
(b) Explain the experiment performed by Francesco Redi to disprove the theory of spontaneous generation.

2. (a) State the differences between Whittaker’s and Carl Woes classification systems.
(b) Explain the nucleic acid base composition method of molecular characterization of an organism.

3. (a)Which different modes of nutrition are seen in protozoa?
(b) What is differential staining? Give two examples.

4. (a) Differentiate between synchronous and diauxic microbial growth ?
(b) How is an antiseptic different from a disinfectant? Write three properties of an effective antiseptic or disinfectant.

5. (a) Write a brief notes on enrichment culture medium and anaerobic medium.
(b) Compare pour plate and spread plate methods for microbial isolation.

PART- (B)

6. (a) Name the causative agent of meningitis, diphtheria, genital herpes, poliomyelitis and measles.
(b) Discuss the role of antimicrobial peptides in innate immune response?

7. (a) How do activated B cells help defend against pathogens?
(b) What is role of inflammation in host defense against a pathogen?

8. (a) Name four mechanisms employed by viruses to evade immune system of host. Briefly discuss any one of these.
(b) Why do bacteria form biofilms?

9. (a) Discuss any one type of microbial interaction.
(b) How do microbes help in maintaining a clean environment?

10. (a) Write a brief note on reef building corals.
(b) What are the differences between genotyping and phenotyping.

MBCE-14 Assignments Details

University	:	IGNOU (Indira Gandhi National Open University)
Title	:	Microbiology
Language(s)	:	English
Code	:	MBCE-14
Degree	:	MSCBCH
Subject	:	Biochemistry
Course	:	Core Courses (CC)
Author	:	Gullybaba.com Panel
Publisher	:	Gullybaba Publishing House Pvt. Ltd.

IGNOU MBCE-14 (Jan 24 - Dec 24) - Solved Assignment

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