TN 12th Question Paper 2024 Microbiology

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 7
7462
!7462Microbiology! £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

7462 2

1. ÷£ì Põßm-µõìm ~s-÷nõU-Qø¯ Ps-k-¤-iz-u-Áº ¯õº ?
(A) â¯õºä ìm÷µõUì (B) µõ-£ºm ÷Põa
(C) Aö»U-éõs-hº ¨öÍ®-ª[ (D) ¤›mì öéº-ÛU
Who invented Phase Contrast microscope ?
(a) George Strokes (b) Robert Koch
(c) Alexander Fleming (d) Frits Zernike

2. ¦÷µõU-÷P-›-÷¯õm-P-ÎÀ J¸ SÑU-÷Põì ‰»U-T-Óõ-Úx BU-ê\-÷ÚØ-Ó® Aøh¢x
EØ-£zv ö\´-²® ATP &°ß Gs-oUøP __________.
(A) 34 (B) 38 (C) 30 (D) 36
The number of ATP molecules generated from one molecule of glucose oxidized in
prokaryotes __________.
(a) 34 (b) 38 (c) 30 (d) 36

3. •uß-•-u-¼À S÷Íõ-Û[ öuõ-ÈÀ-~m-£z-v-ÚõÀ E¸-ÁõU-P¨-£mh ©µ-£-q »[S :
(A) -£õ-¼ (B) ÷å¼ (C) Áõ-¼ (D) hõ-¼
First genetically produced animal by cloning technique is __________.
(a) Bally (b) Shally (c) Vally (d) Dolly

4. En-ÂÀ ~s-q-°-›-PÒ Áͺ-Á-uØ-Sz ÷uøÁ-¯õÚ SøÓ¢-u-£m\ aw __________ BP
C¸UP ÷Ás-k®.
(A) 0.78 (B) 0.99 (C) 0.50 (D) 0.86
The minimum value of aw for the growth of the micro-organisms in foods should be
around __________.
(a) 0.78 (b) 0.99 (c) 0.50 (d) 0.86

5. ¤ß-Á-¸-Á-Ú-ÁØ-ÔÀ G¢u ÷Áv¨-ö£õ-¸Ò Fk-¸-Ä® BØ-ÓÀ AØ-Óx ?
(A) Gz-v-¼ß BU-øé-k (B) ¥ÚõÀ
(C) ¥m-hõ ¦÷µõ-ø£-÷¯õ-»õU-÷hõß (D) A÷¯õ-iß
Which of the following chemical lack penetrating power ?
(a) Ethylene oxide (b) Phenol
(c) Beta-propiolactone (d) Iodine

6. ¤ß-Á-¸® ÷|õ´-P-ÐÒ ¤.].-â uk¨-§] G¢-÷|õ´US uk-¨£õØ-ÓÀ AÎU-Qß-Óx ?
(A) -Põ-»-µõ (B) ]¤-¼ì (C) i¨-w-›-¯õ (D) Põ-\-÷|õ´
B.C.G. Vaccine gives immunity against which of the following disease ?
(a) Cholera (b) Syphilis (c) Diphtheria (d) Tuberculosis

3 7462

7. Gß-h«
- £
- õ îì-÷hõ-¼i
- U-PõøÁ ö£õ-¸z-u©
- m-iÀ R÷Ç öPõ-kU-P¨-£m-kÒÍ TØ-ÖP
- Î
- À
Gx \›-¯õ-Úx ?
(A) CøÁ ©»&-Áõ´ ÁÈ-¯õP Phz-u¨-£-k-Á-vÀ-ø»
(B) AuØS ]ìm {ø» CÀ-ø»
(C) ©Û-u ö£¸[-S-h-¼À m÷µõ-÷£õ-\õ´-k-PÒ ÁõÌ-Qß-Ó-Ú
(D) Ax ÷|õ-²s-hõU-Põ-x
Which of the following statement is true concerning Entamoeba histolytica ?
(a) It is not transmitted through faecal-oral route.
(b) It has no cystic stage.
(c) Trophozoites live in large intestine of human.
(d) It is non-pathogenic.

8. jÛ-¯õ £õº-÷£ __________ GÚ-Ä® AøÇU-P¨-£-k-Q-Ó-x.
(A) £õº-£ºì Cma (B) ÷\Ø-Ö¨-¦s
(C) ÷Pß-i-i-¯õ-êì (D) Bß-÷Põ-ø©U-÷Põ-]ì
Tinea Barbae is also called as __________.
(a) Barber’s itch (b) Athlete’s foot
(c) Candidiasis (d) Onchomycosis

9. ö£Û-]-¼ß EØ-£z-vUS ÷\ºU-P¨-£-k® •ß-÷Úõi __________.
(A) øíi-÷µõ-S-÷Íõ-›U Aª-»® (B) ]m-›U Aª-»®
(C) ¤øÚ-°À A]m-iU Aª-»® (D) hõº-hõ-›U Aª-»®
The precursor used in Penicillin production is __________.
(a) Hydrochloric acid (b) Citric acid
(c) Phenyl acetic acid (d) Tartaric acid

10. ¤ß-Á-¸-Á-Ú-ÁØ-ÔÀ uÁ-Óõ-P¨ ö£õ-¸¢-v-²ÒÍ Cøn-ø¯U Ps-h-Ô-P.
(A) ÁøP III - uk¨-£õØ-ÓÀ Tm-h-øÚ-Ä
(B) ÁøP I - A÷hõ-¤
(C) ÁøP IV - ©õß-hõUì Gvº-Â-øÚ
(D) ÁøP II - Bº-uì Gvº-Â-øÚ
Identify the mismatched pair from the following :
(a) Type III - Immune complex
(b) Type I - Atopy
(c) Type IV - Mantoux reaction
(d) Type II - Arthus reaction

[ v¸¨¦P / Turn over

7462 4

11. ¦µu EØ-£z-vø¯ __________ AkUS {Öz-x-Q-Ó-x.
(A) UAG (B) UGA
(C) UAA (D) ÷©Ø-Psh AøÚz-x®
__________ sequence terminates protein synthesis.
(a) UAG (b) UGA
(c) UAA (d) All of the above

12. öPõ_ ©Ø-Ö® Eso ‰»® £µ-Ä® øÁµì-P-ÐUS J¸ Euõ-µ-n® __________ BS®.
(A) ]U-SßSß-¯õ øÁµì (B) öh[S øÁµì
(C) Ga.-I. øÁµì (D) L÷£Í øÁµì
__________ is an example for mosquito-borne and tick borne viruses.
(a) Chikungunya virus (b) Dengue virus
(c) HIV virus (d) Flavi virus

13. Dìm ÷£õßÓ §gø\ GÚ AøÇU-P¨-£-k-Áx __________.
(A) \õU-P-÷µõ-ø©-]ì (B) ÷Pß-i-hõ
(C) Bì-£º-âÀ-»ì (D) Q›¨-÷hõ-PõU-Pì
__________ is called yeast like fungi.
(a) Saccharomyces (b) Candida
(c) Aspergillus (d) Cryptococcus

14. ShØ-Põ´a-\ø» HØ-£-kz-x-Áx __________.
(A) i›¨-÷£õ-Û-©õ £À-¼-h® (B) Göå-›-]-¯õ ÷Põ-ø»
(C) \õÀ-÷©õ-öÚÀ-»õ øh¤ (D) ¨-›-÷¯õ Põ-»-÷µ
Enteric fever is caused by __________.
(a) Tryponema pallidum (b) Escherichia coli
(c) Salmonella typhi (d) Vibrio cholerae

15. ªPa-]-Ô¯ øÁµ-êØS J¸ Euõ-µ-n® __________ BS®.
(A) ÷µ¥ì øÁµì (B) £õUì øÁµì
(C) HIV øÁµì (D) £õº-÷Áõ øÁµì
__________ is an example for the smallest virus.
(a) Rabies virus (b) Pox virus
(c) HIV virus (d) Parvo virus

5 7462

£S-v & 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. Bs-i-ö\¨-iU – Áøµ-¯-ÖU-P-Ä®. Gkz-xU-Põmk u¸-P.
Define Antiseptic. Give an example.

17. DNA Á›-ø\¨-£-kz-x-uÀ •øÓ-P-øÍU TÖ-P.
State the methods of DNA sequencing.

18. EøÓ-¯-øÁzx Põ-¯-øÁz-uÀ Gß-ÓõÀ GßÚ ?
What is called freeze drying ?

19. ¦Ñµ-ö\ßm ~s-÷nõU-Q-°ß £¯ß-PøÍ GÊ-x-P.
Write the applications of fluorescent microscopy.

20. ö|U› xPÒ-PÒ – Áøµ-¯-ÖU-P-Ä®.
Define - Negribodies.

21. ½è-÷©-Û-¯õ ÷hõ-÷Úõ-Áõ-øÚ-°ß ¨÷µõ-÷©ì-i-÷Põm {ø»-°ß £h® Áøµ¢x
£õ-P[-PøÍU SÔU-P-Ä®.
Draw the diagram of a promastigote form of Leishmania donovani and label the parts.

22. Phz-v-P-Îß ÁøP-PÒ ¯õøÁ ?
What are the types of Vectors ?

23. \¢-uº¨-£-Áõu ø©U-÷Põ-êì Gß-ÓõÀ GßÚ ?
What is opportunistic mycosis ?

24. §m- h ¨- £ mh uõøh ÷|õø¯ Es- h õU- S ® E°- › EØ- £ zv ö\´- ² ® |a- _ U- P - Î ß
ö£¯º-PøÍ GÊ-x-P.
Write the names of the toxins produced by the organism causing lock jaw disease.

[ v¸¨¦P / Turn over

7462 6

£S-v & 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. ö|õ-vz-uÀ ÷©À-÷|õUS •øÓU-S®, ö|õ-vz-uÀ RÌ-÷|õUS •øÓU-S® Cøh-÷¯-²ÒÍ
÷ÁÖ-£õ-k-PøÍ Am-h-Á-øn¨-£-kz-x-P.
Tabulate the differences between upstream and downstream fermentation process.

26. Kº E¯º-{ø» Phz-v-°ß £s-¦-PøÍ GÊx-P.
Mention the characteristics of an Ideal Vector.

27. u°-›ß £¯ß-PøÍ GÊ-x-P.
Write the uses of Curd.

28. i¨-w-›-¯õ-ÂØS ÷©Ø-öPõÒ-Ю ÷|õ´ uk¨¦ £ØÔ GÊ-x-P.
Write about the prophylaxis for Diphtheria.

29. ]U-SßSß-¯õ øÁµì £ØÔ GÊ-x-P.
Write about Chikungunya virus.

30. PÖ¨¦ }º Põ´a-\À Gß-ÓõÀ GßÚ ?
What is black water fever ?

31. öẮ SÇõ´ ÷\õ-uøÚ £ØÔ ]Ö SÔ¨¦ Áøµ-P.
Write a short note on Germ Tube test.

32. MBC ©Ø-Ö® MIC ÷\õ-uøÚ Gß-ÓõÀ GßÚ ?
What is meant by MBC and MIC test ?

33. E°› ÂøÚ-³U-Q-¯õP ö\¯À-£-k-Áx Gx ? Auß £¯ß-PøÍ GÊ-x-P.
Which is acting as a biocatalyst ? Mention its uses.

7 7462

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

34. (A) SEM ©Ø-Ö® TEM &ªØ-S Cøh÷¯ EÒÍ ÷ÁÖ-£õ-k-PøÍ GÊ-x-P.
AÀ-»-x
(B) QøÍ-Põ-øÍ-]ì £õøu £ØÔ ÂÁ-›U-P-Ä®.
(a) Write the differences between SEM and TEM.
OR
(b) Explain Glycolysis pathway.

35. (A) ö£Û-]-¼ß EØ-£z-v-°À EÒÍ £À-÷ÁÖ {ø»-PøÍ £hz-x-hß ÂÁ-›U-P-Ä®.
AÀ-»-x
(B) En-Ä £u¨-£-kz-x® •øÓ-P-øÍ ÂÁ-›U-P-Ä®.
(a) Explain the various phases of Penicillin production with diagram.
OR
(b) Describe the methods of Food Preservation.

36. (A) â¯õº-i-¯õ »õ®-¤-¼-¯õ-Âß ÁõÌUøP _ÇØ-]ø¯ ÂÁ-›U-P-Ä®.
AÀ-»-x
(B) öí¨-£-øh-iì B øÁµì Aø©¨ø£ ÂÁ-›U-P-Ä®.
( a) Write in detail about the life cycle of Giardia lamblia.
OR
(b) Explain the structure of Hepatitis B virus.

37. (A) ÷|µ-i Gø»\õ-ÂøÚ £hz-x-hß Â›-ÁõP ÂÁ-›U-P-Ä®.
AÀ-»-x
(B) ©Ö-÷\ºUøP DNA öuõ-ÈÀ-~m-£z-vÀ EÒÍ {ø»-PøÍ ÂÁ-›U-P-Ä®.
(a) Explain the Direct ELISA with diagram.
OR
(b) Explain the stages involved in recombinant DNA technology.

38. (A) ¥ÚõÀ ÷Põ-G-¤-ö\ßm ÷\õ-u-øÚø¯ ÂÁ-›U-P-Ä®.
AÀ-»-x
(B) vµõmø\ öPõzx ÷£õßÓ Aø©¨-¦-øh¯ £õU-j-›-¯õ EØ-£zv ö\´-²® |a-_U&
-Pøͨ £ØÔ ÂÁ-›U-P-Ä®.
(a) Explain the Phenol Coefficient test.
OR
(b) Explain about the toxins produced by the bacteria having grape like cluster appearance.

-oOo-

[ v¸¨¦P / Turn over

QUESTION PAPERS
GET PREVIOUS YEAR QUESTION PAPERS FOR ALL CLASSES FOR CBSE, ISCSE, ISC AND ALL ALL
STATE BOARDS HERE AT

Andhra Pradesh Board Question Papers
BOARD
WISE Assam Board Question Papers
Bihar Board Question Papers
Chhattisgarh Board Question Papers
Goa Board Question Papers
Gujarat Board Question Papers
Haryana Board Question Papers
Himachal Pradesh Board Question Papers
J&K State Board Question Papers
Jharkhand Board Question Papers
Karnataka Board Question Papers
Kerala Board Question Papers
Madhya Pradesh Board Question Papers
Maharashtra State Board Question Papers
Manipur Board Question Papers
Meghalaya Board Question Papers
Mizoram Board Question Papers
Nagaland Board Question Papers
Orissa Board Question Papers
Punjab Board Question Papers
Rajasthan Board Question Papers
Tamil Nadu Board Question Papers
Telangana State Board Question Papers
Tripura Board Question Papers
Uttarakhand Board Question Papers
Uttar Pradesh (UP) Board Question Papers
West Bengal (WB) Board Question Papers