Download PTU B-Tech Bio Technology 2020 Dec 3rd Sem 55073 Microbiology Question Paper

Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) BT-Bio Technology 2020 December 3rd Sem 55073 Microbiology Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (BT) (2012 to 2017) (Sem.?3)
MICROBIOLOGY
Subject Code : BTBT-303
M.Code : 55073
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CAND IDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Write briefly :
1.
How is cell wall of gram negative bacteria different from that of gram positive bacteria?
2.
Why spores are a threat to food industry?
3.
What are the disadvantages of radiation sterilization?
4.
What is lyophilization?
5.
What is the difference between active and passive transport?
6.
What is binary fission and budding?
7.
What is the basic difference between solid state and submerged fermentation?
8.
How are anaerobic bacteria cultured in laboratory?
9.
List various strain improvement techniques?
10. Write difference between thermophiles and psychrophiles.
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SECTION-B
11. Describe the structure and function of capsule and flagella.
12. What are the various chemical requirements required for the growth of Pro
microorganisms? Explain how these help in the growth of the microorganisms?
13. Write about the type and role of feed stocks used for industrial fermentations.
14. What is translation? Describe the steps of the translation process.
15. Write briefly about maintenance and preservation of industrially important
microorganisms.
SECTION-C
16. Compare the morphological characteristics of bacteria and fungi with suitable examples
and diagrams.
17. What are the various techniques for the measurement of the growth of the microorganisms?
Explain about the filtration, the most probable number method and direct microscopic
count.
18. List the various techniques of sterilization? Describe the moist heat sterilization, dry heat
sterilization and filtration sterilization along with their applications.
NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any
paper of Answer Sheet will lead to UMC against the Student.
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