TN 11th Question Paper 2024 Microbiology

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 8
7662
!7662IstYearMicrobiology! £vÄ Gs
Register Number

PART - III
~sq°›¯À / MICROBIOLOGY
( uªÌ ©ØÖ® B[Q» ÁÈ / Tamil & English Version)

Põ» AÍÄ : 3.00 ©o ÷|µ® ] [ ö©õzu ©v¨ö£sPÒ : 70

Time Allowed : 3.00 Hours ] [ Maximum Marks : 70

AÔÄøµPÒ : (1) AøÚzx ÂÚõUPЮ \›¯õP £vÁõQ EÒÍuõ GߣuøÚ \›£õºzxU
öPõÒÍÄ®. Aa_¨£vÂÀ SøÓ°¸¨¤ß AøÓU PsPõo¨£õÍ›h®
EhÚi¯õPz öu›ÂUPÄ®.
(2) }»® AÀ»x P¸¨¦ ø©°øÚ ©mk÷© GÊxÁuØS®,
AiU÷PõikÁuØS® £¯ß£kzu ÷Ásk®. £h[PÒ ÁøµÁuØS
ö£ß]À £¯ß£kzuÄ®.
(3) ÷uøÁ¯õÚ Ch[PÎÀ £h[PÒ ÁøµP.
Instructions : (1) Check the question paper for fairness of printing. If there is any lack of fairness,
inform the Hall Supervisor immediately.
(2) Use Blue or Black ink to write and underline and pencil to draw diagrams.
(3) Draw diagrams wherever necessary.

£Sv & I / PART - I
SÔ¨¦ : (i) AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 15x1=15

(ii) öPõkUP¨£mkÒÍ |õßS ©õØÖ ÂøhPÎÀ ªPÄ® Hئøh¯ Âøhø¯z
÷uº¢öukzxU SÔ±mkhß Âøh°øÚ²® ÷\ºzx GÊuÄ®.
Note : (i) Answer all the questions.

(ii) Choose the most appropriate answer from the given four alternatives and write
the option code and the corresponding answer.

[ v¸¨¦P / Turn over

7662 2

1. ìmöµ¨÷hõø©]ì QŸ]¯ì __________ Bßi£¯õiUøP EØ£zv ö\´QÓx.
(A) {÷¯õø©]ß (B) ìmöµ¨÷hõø©]ß
(C) BUj÷Úõø©]ß (-D) ÷©ØTÔ¯ AøÚzx®
Streptomyces griseus produces ___________antibiotic.
(a) Neomycin (b) Streptomycin
(c) Actinomycin (d) All of the above

2. JÎ ~s÷nõUQ°ß öuÎÄ vÓß :
(A) 0.2 µm (B) 1 cm (C) 2 nm (D) 1.0 µm
The resolving power of light microscope is :
(a) 0.2 µm (b) 1 cm (c) 2 nm (d) 1.0 µm

3. Tku»õÚ S÷µõ÷©õ÷\õ® i.Gß.H __________ GÚ AøÇUP¨£kQÓx.
(A) ¤Íõìªm (B) EmP¸ (C) EÒ Ámh P¸ (D) G¨¤÷\õ®
The extra chromosomal DNA is called :
(a) Plasmid (b) Nucleus (c) Nucleoid (d) Episome

4. ªßöÁ¨£ \©{ø» Ak¨¤À ¤ßÁ¸ÁÚÁØÔÀ G¢u AÊzu®, öÁ¨£{ø»
©ØÖ® ÷|µ® £¯ß£kzv¨ ö£õ¸ÒPÒ ~sq°º }UP® ö\´¯¨£kQßÓx ?
(A) 22 lbs, 1708C, 35 {ªh[PÒ (B) 16 lbs, 1208C, 18 {ªh[PÒ
(C) 15 lbs, 1218C, 15 {ªh[PÒ (D) 18 lbs, 1808C, 20 {ªh[PÒ
Which of the following pressure, temperature and time are employed in autoclave for
sterilization of materials ?
(a) 22 lbs, 1708C, 35 min. (b) 16 lbs, 1208C, 18 min.
(c) 15 lbs, 1218C, 15 min. (d) 18 lbs, 1808C, 20 min.

5. J¸ £õUj›¯õU SÊÂÀ, J÷µ J¸ ]ØÔÚ® ©mk® Põn¨£mhõÀ Ax __________
GßÖ AøÇUP¨£kQßÓx.
(A) Aøµ {ø»¯õP P»UP¨£mh Áͺa]
(B) y¯ Áͺa]U P»øÁ
(C) A_zu©õÚ Áͺa]
(D) P»UP¨£mh Áͺa]
The culture with only one type of organism in the colony is called __________.
(a) Semi mixed culture
(b) Pure culture
(c) Contaminated culture
(d) Mixed culture

3 7662

6. Põº£ß&øh&BUøéi¼¸¢x «z÷uß EØ£zv¯õS® ö\¯À __________
GÚ¨£k®.
(A) ö©zu÷ÚõöáÛ]ì
(B) Põº£ß&øh&BUøék {ø»{ÖzuÀ
(C) JÎa÷\ºUøP
(D) ö©zv÷»õmµõ¤
The process of production of CH4 from CO2 is called :
(a) Methanogenesis
(b) CO2 fixation
(c) Photosynthesis
(d) Methylotrophy

7. ¤ßÁ¸ÁÚÁØÖÒ Gx Aª» \õ¯® AÀ» ?
(A) \õL¨µÛß (B) C¢v¯õ C[U (C) {U÷µõ]ß (D) D÷¯õ]ß
Which of the following is not an acidic dye ?
(a) Safranin (b) India Ink (c) Nigrosin (d) Eosin

8. ~sq°›PøÍ C¸ ö£¯›mk ÁøP¨£kzx® •øÓ°À EÒÍ Cµsk ö\õØPÒ
Sﬣx :
(A) CÚ® ©ØÖ® ÁøP (B) Á›ø\ ©ØÖ® Sk®£®
(C) ÷£›Ú® ©ØÖ® CÚ® (D) Sk®£® ©ØÖ® ÷£›Ú®
In Binomial nomenclature, writing the name of micro-organism in two words represents :
(a) Species and variety (b) Order and family
(c) Genus and species (d) Family and genus

9. \õn G›Áõ² Gߣx :
(A) «z÷uß, ø|mµáß, BUêáß
(B) BUêáß, Põº£ß&øh&BUøék, ø|mµáß
(C) «z÷uß, ø|mµáß, øímµáß
(-D) ÷©ØPsh AøÚzx®
Biogas is a mixture of :
(a) Methane, Nitrogen, Oxygen
(b) Oxygen, Carbondioxide, Nitrogen
(c) Methane, Nitrogen, Hydrogen
(d) All of the above

[ v¸¨¦P / Turn over

7662 4

10. ¼a\ßPÎß öuõhº¦ __________ Cøh÷¯ EÒÍøÁ¯õS®.
(A) £õ] ©ØÖ® §gø\ (B) £õUj›¯õ ©ØÖ® øÁµì
(C) øÁµì ©ØÖ® §gø\ (D) £õ] ©ØÖ® £õUj›¯õ
The relationship between __________ result in the formation of lichen.
(a) Algae and fungi (b) Bacteria and virus
(c) Virus and fungi (d) Algae and bacteria

11. ø|m÷µõãÚì E°º EµzvØS Euõµn® :
(A) øµ÷\õ¤¯® (B) ÷£]À»ì (C) Ã.H.G®. (D) `÷hõ÷©õÚì
An example of nitrogenous biofertilizer :
(a) Rhizobium (b) Bacillus (c) VAM (d) Pseudomonas

12. ‰øÍ uskÁh vµÁ® (CSF) ¤ßÁ¸ÁÚÁØÔÀ G[S Põn¨£k® ?
(A) ©søh KmiØS® i³µõ ÷©mh¸US® Cøh°À
(B) ö£›ÁõìS»õº CøhöÁÎ
(C) xøn i³µõ CøhöÁÎ
(D) xøn AµUÚõ´k CøhöÁÎ
In which of the following Cerebrospinal fluid (CSF) is present ?
(a) Between skull and dura mater
(b) Perivascular spaces
(c) Sub dural space
(d) Sub arachnoid space

13. £¯oPÎß Á°ØÖ¨÷£õUS __________ ÷|õ´Q¸ª¯õÀ EshõQÓx.
(A) ìøhø£÷»õPõUPì B›¯ì
(B) ¨›÷¯õ Põ»÷µ
(C) D ÷Põø»
(-D) ÷©÷» EÒÍ AøÚzx®
Traveller’s diarrhea is caused by :
(a) Staphylococcus aureus
(b) Vibrio cholerae
(c) Escherichia coli
(d) All of the above

5 7662

14. ¤ßÁ¸ÁÚÁØÔÀ Gx R÷©õ Bm÷hõmµõ¨ìUS GkzxUPõmhõS® ?
(A) C¸®¦ £õUj›¯õ
(B) \¯÷Úõ £õUj›¯õ
(C) ¦÷µõm÷hõ÷\õÁõ
(D) Fuõ ©ØÖ® £aø\ \À£º AÀ»õu £õUj›¯õUPÒ
Which one of the following is an example for Chemoautotroph ?
(a) Iron bacteria
(b) Cyanobacteria
(c) Protozoa
(d) Purple and green non sulphur bacteria

15. ö\ª&Pß\º÷ÁmiÆ i.Gß.H. Cµmizuø» {¹¤zuÁº :
(A) Áõm\ß ©ØÖ® Q›U (B) ¥iÀ ©ØÖ® hõmh®
(C) H.G. öPõµõÚõ (D) «\À\ß ©ØÖ® ìhõÀ
The semi-conservative mode of DNA replication was proved by :
(a) Watson and Crick (b) Beadle and Tatum
(c) H.G. Khorana (d) Meselson and Stahl

£Sv & II / PART - II

SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõU- P - Ð US Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs 24 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 6x2=12
Note : Answer any six questions. Question No. 24 is Compulsory.

16. ìmöµ¨÷hõø©]Ûß £s¦PøÍU TÖP.
State the characteristics of Streptomycin.

17. HEPA &›ÁõUPzøu GÊxP. HEPA &ÁiPmi°ß £¯ß ¯õx ?
Write the expansion of HEPA. What is the use of a HEPA filter ?

18. ö©UPõßQ APõº Hß ¤›zuÔ FhP® GßÓøÇUP¨£kQÓx ?
Why is MacConkey Agar called as separation medium ?

[ v¸¨¦P / Turn over

7662 6

19. ~s÷nõUQ°ß ÁøPPÒ ¯õøÁ ?
What are the different types of microscopes ?

20. öÁ¨£ PõØÖ Ak¨¦ (Hot Air Oven) £ØÔ GÊxP.
Write about the Hot Air Oven.

21. £õì_øµ÷\åß GßÓõÀ GßÚ ?
What is Pasteurization ?

22. £¯ßö£Ö® ÁõÌUøP •øÓ GßÓõÀ GßÚ ? GkzxUPõmkPÒ u¸P.
What is Commensalism ? Give examples.

23. ÷|õ÷\õ÷Põª¯À (Nosocomial) ÷|õ´zöuõØÖ GßÓõÀ GßÚ ?
What is Nosocomial infection ?

24. i.Gß.H. ‰»UTÔ¾ÒÍ ø|mµáß Põµ[PÒ ¯õøÁ ?
What are the nitrogenous bases present in DNA molecules ?

£Sv & III / PART - III
SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõU- P - Ð US Âøh- ¯ - Î U- P - Ä ®. ÂÚõ Gs 33 &US
Pm-hõ-¯-©õP Âøh-¯-ÎU-P-Ä®. 6x3=18
Note : Answer any six questions. Question No. 33 is Compulsory.
25. APõ›ß £¯ßPøÍ GÊxP.
Write the uses of agar.

26. Gί \õ¯÷©ØS® •øÓ ©ØÖ® ©õØÖ \õ¯÷©ØS® •øÓ – ÷ÁÖ£kzxP.
Differentiate - Simple and Differential Stain.

27. G›zxa \õ®£»õUSÁx GßÓõÀ GßÚ ?
What is Incineration ?

28. ÁøP¨£õmi¯¼ß ÷|õUP[PÒ ¯õøÁ ?
What are the objectives of Taxonomy ?

7 7662

29. E¨¦ ¸®¤PÒ GßÓõÀ GßÚ ?
What are Halophiles ?

30. ~sq°º¨ ö£¸UPz uhUP¸Â £h® Áøµ¢x, Auß H÷uÝ® C¸ £s¦PøÍ
ÂÍUSP.
Draw the diagram of a chemostat and explain any two of its characteristics.

31. ø£ø» GßÓõÀ GßÚ ? Auß ÷Áø» ¯õx ?
What are pili ? What is its function ?

32. \õn G›Áõ² Eø»°ß £h® Áøµ¢x £õP[PøÍ SÔUPÄ®.
Draw and label biogas digester.

33. ¤ß u[Q¯ CøÇ GßÓõÀ GßÚ ? Ax GÆÁõÖ E¸ÁõQÓx ?
What is lagging strand ? How is it synthesized ?

£Sv & IV / PART - IV

SÔ¨¦ : AøÚz-x ÂÚõU-P-ÐU-S® Âøh-¯-ÎU-P-Ä®. 5x5=25
Note : Answer all the questions.

34. (A) ~sq°›¯¾US ¿°ì £õ´a\º BØÔ¯ £[QøÚ GÊxP.
AÀ-»-x
(B) Qµõ® \õ¯÷©ØS® •øÓ°øÚ £hzxhß ÂÁ›UPÄ®.
(a) Explain the contribution of Louis Pasteur in Microbiology.
OR
(b) Diagrammatically explain Gram’s staining procedure.

35. (A) ªß öÁ¨£ \©{ø» Ak¨¦ (Autoclave) ÷Áø» ö\´²® Âuzøu GÊxP.
AÀ-»-x
(B) BU]áß ÷uøÁ Ai¨£øh°À ~sq°›Pøͨ ¤›¨£x £ØÔ ÂÍUSP.
(a) Describe the working mechanism of autoclave.
OR
(b) Describe the classification of micro-organism based on their oxygen requirement.

[ v¸¨¦P / Turn over

7662 8

36. (A) \õUPøh }º _zvP›¨¦ •øÓ°À HØ£k® |ßø©PÒ £ØÔ ÂÁ›UPÄ®.
AÀ-»-x
(B) FØÖ umk •øÓø¯ ÂÍUSP.
(a) Explain the benefits of waste water treatment.
OR
(b) Explain pour plate method.

37. (A) P¢uP _ÇØ]ø¯ ÂÍUSP.
AÀ-»-x
(B) øu©êß Aø©¨ø£²® ÷Áø»PøͲ® ÂÁ›UPÄ®.
(a) Explain Sulphur Cycle.
OR
(b) Describe the structure and function of thymus.

38. (A) i.Gß.H. Cµmizu¼ß {PÌÂÀ xÁUP{ø»°ß •UQ¯©õÚ £iPøÍ
GÊxP.
AÀ-»-x
(B) ¦÷µõ÷P›÷¯õm ©ØÖ® ³÷P›÷¯õmkPøÍ ÷ÁÖ£kzxP.
(a) Write the major steps involved in Initiation of DNA Replication.
OR
(b) Differentiate between Prokaryotes and Eukaryotes.

-o0o-

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