Download PTU B.Tech 2021 Jan Food-Technology 3rd Sem 78728 Introduction To Biology And Microbiology Question Paper

Roll No.

Total No. of Questions : 18 Total No. of Pages : 02

B.Tech. (Food Technology) (Sem.-3)

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INTRODUCTION TO BIOLOGY AND MICROBIOLOGY

Subject Code : BTFT-211-19

M.Code : 78728

Time : 3 Hrs. Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

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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

Write briefly :

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1. What is the difference between Meiosis and mitosis?
2. What are the functions of Nucleus and Nucleolus?
3. What do you understand by Nitrogen mineralization?
4. Name the microorganism involved in curd, yoghurt and cheese.
5. What is the role of microorganisms in the pest control?

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6. What kind of foods spoiled by the yeast and molds?
7. What kind of microorganisms are associated with soil fertility?
8. Enlist the various factors affecting the growth of microorganism.
9. What is the difference between beta oxidation of saturated and unsaturated fatty acids?
10. Differentiate between the macro and micro nutrients. What are the sources of micro nutrients?

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SECTION-B

11. What do you understand by DNA replication and protein synthesis?
12. What is the difference among the osmosis, active transport endocytosis, and exocytosis?
13. Write down the various classes of enzymes. Differentiate between oxidoreductases and isomerases with examples.
14. What is the difference in food borne infections and intoxication?

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15. Write about the four distinct phases of the growth curve.

SECTION-C

16. Explain in detail the process of Nitrogen Cycle with suitable diagram.
17. a) Write down the existence, transmission and symptoms of Clostridium botulinum and Bacillus Cereus Foodborne Intoxication.
    b) Write down a short note of microbiology of water.

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18. Explain in detail the process of glycolysis and Citric Acid Cycle.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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