Download PTU B.Sc Agriculture 2019 May 2nd Semester 72356 ELEMENTARY MICROBIOLOGY Question Paper

Download PTU (Punjab Technical University) BSc Agriculture 2nd Semester 72356 ELEMENTARY MICROBIOLOGY Last 10 Years 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011 and 2010 Previous Question Papers.

1 | M-72356 (S2)-65
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc. (Agriculture) (2014 & Onwards) (Sem.?2)
ELEMENTARY MICROBIOLOGY
Subject Code : BSAG-201
Paper ID : [72356]
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt ANY FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt ANY TWO questions.

SECTION-A
1. Write a short note on the following :
a) Pasteurisation
b) Fermentation
c) Single cell protein
d) Rhizosphere
e) Nitrification
f) Food preservation
g) Prophage
h) Edible mushrooms
i) Viriods
j) Haustoria

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1 | M-72356 (S2)-65
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Sc. (Agriculture) (2014 & Onwards) (Sem.?2)
ELEMENTARY MICROBIOLOGY
Subject Code : BSAG-201
Paper ID : [72356]
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks
each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt ANY FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students
have to attempt ANY TWO questions.

SECTION-A
1. Write a short note on the following :
a) Pasteurisation
b) Fermentation
c) Single cell protein
d) Rhizosphere
e) Nitrification
f) Food preservation
g) Prophage
h) Edible mushrooms
i) Viriods
j) Haustoria

2 | M-72356 (S2)-65
SECTION-B
2. Discuss the contributions of Robert Koch, Louis Pasteur and Antony Van Leeuwenhoek.
3. Classify and explain the micro-organisms on the basis of mode of nutrition.
4. Explain biochemical reactions taking place in nitrogen cycle along with well labelled
diagram.
5. What is compost technology? Discuss the detailed process of microbial composting.
6. What do you mean by biodegradation? Explain the role of different microbes in
biodegradation of natural organic compounds.

SECTION-C
7. Explain the major contributions of Louis Pasteur in development of microbiology.
8. What are bacteriophages? Explain different stages of lytic cycle for its multiplication.
How does it differ from the lysogenic cycle?
9. What do you mean by microbial food spoilage? Describe different types of food spoilage,
their causative agents and measures to prevent the spoilage of food.








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paper of Answer Sheet will lead to UMC against the Student.
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