IGNOU B.Sc.N.(PB) BNS 202 APPLIED SCIENCES Solved Assignment ENGLISH

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BNS 202 (July 2026) - ENGLISH

APPLIED SCIENCES
Assignment – 2 (Block 3, 4 & 5) Tutor marked
Microbiology and Nutrition & Dietetics
Programme Code: B.Sc. N. (PB)
Course Code: BNS – 202
Assignment Code: BNS 202/TMA-2/2026
Maximum Marks: 100
Last date of Submission: September 30th, 2026
Note: Section A(Microbiology) and B (Nutrition and Dietetics )are to be attempted on separate answer
sheets.
Section A Microbiology Maximum Marks: 50
1) a) Draw a labeled schematic diagram of a typical bacterial cell showing its various
 organelles.
b) Explain how would you differentiate bacteria from fungi.
c) Explain how would you grow bacteria in the laboratory.
d) Enumerate various factors influencing the growth of bacteria (2+1+2+21⁄2=71⁄2)
2) a) Define the term sterilization and disinfection.
b) Explain is their usefulness in medical/nursing practice.
c) Enumerate various methods of sterilization using moist heat as a sterilizing agent.
d) Give the principle and applications of an autoclave. (2+11⁄2+21⁄2+11⁄2=71⁄2)
3. Name the causative agents of the following diseases. Describe ,how are they transmitted form the patient
to a healthy person? (5×3=15)
a) Syphilis
b) Diphtheria
c) Bacillary Dysentery
d) Viral Hepatitis
e) Dengue Fever
4) Name the scientist who devised Gram's stain? Give briefly its principle and
procedure. Name three gram positive and three gram negative bacteria. (1⁄2+3+11⁄2=5)
5) Give the general characters of Chlamydia. Name the diseases caused by them and mention about their
transmission from patient to a healthy person. (2+1½+1½=5)
6) Define an antigen and antibody. Enumerate different antigen-antibody reactions. giving one example of
each type which is useful in laboratory diagnosis of microbial diseases. (1+1+1½+1½=5)
7) Define are antibiotics? Explain their source of production? Give two examples of commonly used
antibiotics in hospital. Differentiate between a bactericidal and a bacteriostatic antibiotic. (1+1+1+2=5)

BNS 202 2025 (TMA 1) - English

APPLIED SCIENCES

Assignment-1 (Block 1 & 2) Tutor marked

Biochemistry & Biophysics

Programme Code: B.Sc. N. (PB)

Course Code: BNS-202

Assignment Code: BNS 202/TMA-1/2025

Maximum Marks: 100

Last date of Submission: August 31", 2025

Note: Section A(Biochemistry) and B (Biophysics) are to be attempted on separate answer sheets.

Section A

Biochemistry

Maximum Marks: 50

1.a) Explain the metabolism of Carbohydrates in human body

b) Describe the anomalies associated with carbohydrate metabolism

2. How are radioisotopes useful in the medical field? Briefly describe, giving specific examples.

3.a) Explain the difference between osmosis and dialysis.

b) How is dialysis useful in a clinical situation?

4. Nucleic acids are central to the very life process itself. Explain their role in living organisms.

5. How are peptides formed from amino acids? Mention the specific role of certain natural peptides.

6. Enzymes in blood have diagnostic importance. Illustrate it with specific examples.

7. a) Differentiate between the physical and chemical changes of matter.

b) List the differences between compounds and mixtures.

8.a) Explain the properties of proteins.

b) Discuss the functions of enzymes.

BNS 202 2025 (TMA 2) - English

APPLIED SCIENCES

Assignment-2 (Block 3, 4 & 5) Tutor marked

Microbiology and Nutrition & Dietetics

Programme Code: B.Sc. N. (PB)

Course Code: BNS-202

Assignment Code: BNS 202/TMA-2/2025

Maximum Marks: 100

Last date of Submission: September 30, 2025

Note: Section A(Microbiology) and B (Nutrition and Dieteties) are to be attempted on separate answer sheets.

Section A

Microbiology

Maximum Marks: 50

1. Define chemotherapy. What is their source of production? Give two examples of commonly used antibiotics in hospital. Differentiate between a bactericidal and bacteriostatic antibiotic.

2. Draw a labeled diagram of a typical bacterial cell showing its various organelles. State the function of each of them. How do bacteria reproduce in nature?

3. Name the causative agents of the following diseases, describe the mode of transmition from the patient to a healthy person?

a) Acquired Immunodeficiency Syndrome (AIDS)

b) Hydrophobia

c) Chicken pox

d) Dengue fever

e) Measles

4. List the general characteristics of mycobacterium. How do you stain them in the laboratory? Name four mycobacteria of medical importance and the diseases caused by them.

5. Define immunity. Differentiate between innate and acquired immunity. Enumerate the factors influencing the development of immunity in an individual.

6. How do fungi differ from bacteria? Explain the characteristics of Candida albicans. Name the various diseases caused by fungi.

7. With the help of a diagram, describe the life cycle of Leishmania Donovani. Describe the process of diagnosis of Kala Azar (Visceral Leishmaniasis).

Section B: Nutrition and Dietetics

Maximum Marks: 50

1. Name three diseases caused by dietary deficiency and three diseases caused due to excessive dietary intake, suggest measures for management of one disease from each category.

2. Discuss advantages of dietary survey in detail.

3. Explain the importance of fibres in daily diet, list important sources of fibres.

4. Define hypothyroidism. What diet is suitable for such a patient?

5. What is the significance of food laws and standards in promotion of public health? Suggest ways for its effective implementation.

6. What are the symptoms of hypoglycemia? Describe the management of hypoglycemic patient.

7. (a) Discus the hazards of food contamination

(b) Explain measures which can be taken to promote food safety.

8. Describe the special dietary needs related to childhood problems.

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