BSc Biotechnology Sem I 2022 2023 2023 BIOTECH. MICROBIOLOGY I Question Paper - Mumbai University | munotes

Questions asked in this paper

• 1. Attempt all questions

1. Q2 All questions carry equal marks
2. Q4 Use of log tables and non-programmable calculators is allowed
3. Q5 For and Q 4 attempt A and B OR C and D directed (Any fifteen) 15
4. Q1 use reduced inorganic substances as their electron source is the study of bacteria 3 Define growth factor
5. Q4 Give any one example of bacterium that is visible without a microscope,
6. Q5 The chemical composition of a synthetic medium is
7. Q6 Give any one example of synthetic medium used for culturing microorganisms
8. Q7 The standard temperature-pressure combination for an autoclave is and 4 psi , and 9 psi and 15 psi)
9. Q8 Give any one example of a phenolic compound which is used for controlling
10. Q9 Define antiseptic
11. Q10 Alcohols are . (heavy metals, denaturing agents ,detergents) Agent which inhibits the growth of viruses is called as agent Although all ionizing radiations can penetrate liquids and most solid materials, rays are most penetrating. (gamma , alpha , beta)
12. Q14 Hexylresorcinol, a derivative of , is marketed in a solution of glycerin and wate. (phenol , alcohol, aldehyde} LS. Condenser is absent in the microscope. (Simple, Compound, Electron)
13. Q16 What is numerical aperture? Calculate a working distance of an uncovered object for which a fine adjustment knob took 3.6 turns to bring it in sharp focus
14. Q18 aberration is a of color fringing 19, What is the difference between a dye and a stain?
15. Q20 Name a stain which turns in leuco form upon gain of electrons
16. Q2 A_ a brief account on different experiments related to spontaneous generation 8 marks
17. Q28 B sample of bacteria is given to you. Give a brief account on methods which can be used for isolation of pure cultures 7 marks
18. Q2 C _ Describe different energy, electron and carbon sources related to nutrition of 8 marks
19. Q2 D_ Give a brief account on groups of microorganisms and applied areas of 7 marks
20. Q3 A_ Heat is an agent which can be used to control microorganisms. Justify 8 marks
21. Q3 B_ Discuss the properties desirable in a disinfectant. in brief about ionizing and nonicnizing radiations with respect to their 08 use as to agents control microorganisms and differentiate between them Describe in brief about the mode of action and practical applications of alcohols 07 end aldehydes as entimicrobial agents Describe the optics of phase contrast microscope. 08 Define differential staining. Explain any one type of differential staining in detail. 07 7 marks
22. Q4 C_ Explain the parts of the transmission electron microscope. Describe the optics of dark field microscopy. 07 8 marks
23. Q5 Write short note on any three of the following a Distribution of microorganisms in nature b Selective and differential medium for culturing microorganisms c UV radiations as a agent te control microbial growth d Advantages and limitations of scanning electron microscopy 15 marks

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