TN 11th Question Paper 2024 Bio-Chemistry

TN PUBLIC EXAM

QUESTION
PAPER
2024

No. of Printed Pages : 8
7663
!7663IstYearBiochemistry! £vÄ Gs
Register Number

PART - III
E°º ÷Áv°¯À / BIO-CHEMISTRY
(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£kzu ÷Ásk®.
(3) ÷uøÁ¯õÚ ChzvÀ Áøµ£h® ©ØÖ® \©ß£õkPøÍz u¸P.
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 and write equations 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

7663 2

1. ¤ßÁ¸ÁÚÁØÔÀ Gx Gs÷hõ¤Íõé Áø»¨¤ßÚ»õÀ öuõSUP¨£mk
ö\¯À£kzu¨£kQÓx ?
(A) {³UÎU Aª»® (B) ¦µu®
(C) ¼¨¤k (-D) øÁmhªß
Which of the following is synthesised and processed by Endoplasmic reticulum ?
(a) Nucleic acid (b) Protein
(c) Lipid (d) Vitamin

2. ø\m÷hõ¤Íõ\zvß C¯Ø {ø»ø© :
(A) vµÁ® (B) TÌ©®
(C) öÁØÔh® (-D) vs©®
The physical nature of cytoplasm is :
(a) liquid (b) colloidal
(c) vacuum (d) solid

3. _U÷µõì J¸ :
(A) •®ø© \ºUPøµ (B) Cµmøh \ºUPøµ
(C) \ºUPøµ AÀ»õux (-D) JØøÓ \ºUPøµ
Sucrose is a :
(a) Trisaccharide (b) Disaccharide
(c) Non Sugars (d) Monosaccharide

4. £õì£õiøhÀ ÷Põ¼ß Gߣx :
(A) ö\µõø©k (B) ö\L£õ¼ß
(C) ª›ì÷hm (-D) ö»]vß
Phosphatidyl choline is :
(a) Ceramide (b) Cephalin
(c) Myristate (d) Lecithin

5. \©ªß ¦ÒΰÀ (pI) Aª÷Úõ Aª»zvß A¯Û ÁiÁ® __________
GßÓøÇUP¨£kQÓx.
(A) ÷|ºªß A¯Û (B) Gvµ¯Û
(C) uÛ EÖ¨¦ (-D) _Âmhº A¯Û
At Isoelectric Point (pI), the ionic form of amino acid is called as :
(a) Cation (b) Anion
(c) Free radicals (d) Zwitter ion

3 7663

6. TkuÀ öuõSvø¯U öPõskÒÍ BÀPíõÀPÐhÚõÚ, öPõʨ¦ Aª» GìhºPÒ
__________ GÚ¨£kQßÓÚ.
(A) Tmk ¼¨¤kPÒ (B) QøÍU÷Põ¼¨¤kPÒ
(C) Á¸ÂUP¨£mh ¼¨¤kPÒ (-D) £õì÷£õ¼¨¤kPÒ
__________ are esters of fatty acids with alcohol and they contain extra groups.
(a) Compound lipids (b) Glycolipids
(c) Derived lipids (d) Phospholipids

7. ìhõºaø\, Aø©÷»ì ö|õv öPõsk }µõØ£SUS® ÷£õx QøhUS® CÖv
ÂøÍö£õ¸Ò __________.
(A) öhUìi›ßPÒ (B) Pøµ²® ìhõºa
(C) ©õÀ÷hõì (-D) SÐU÷Põì
The end product of hydrolysis of ‘starch’ by amylase is __________.
(a) Dextrins (b) Soluble starch
(c) Maltose (d) Glucose

8. {øÓÄØÓ öPõʨ¦ Aª»zvß ö£õx Áõ´¨£õk __________.
(A) CnH2n+1OH (B) CnH2n+1COOH
(C) CnH2n−1OH (-D) CnH2n−1COOH
General formula for saturated fatty acid is __________.
(a) CnH2n+1OH (b) CnH2n+1COOH
(c) CnH2n−1OH (d) CnH2n−1COOH

9. ì¤[÷Põø©¼ß Gߣx J¸ __________.
(A) iøµAø\À QÎ\µõÀ (B) ö£Ó¨£mh ¼¨¤k
(C) £õì÷£õ¼¨¤k (-D) Gί ¼¨¤k
Sphingomyelin is a __________.
(a) Triacyl glycerol (b) Derived lipid
(c) Phospholipid (d) Simple lipid

10. ¤³›ß ©ØÖ® ¤›ªiß Põµ[PÒ JÎø¯ __________ nm &À EÔg_QßÓÚ.
(A) 300 (B) 260 (C) 650 (-D) 280
Purine and Pyrimidine bases absorb light at __________ nm.
(a) 300 (b) 260 (c) 650 (d) 280

[ v¸¨¦P / Turn over

7663 4

11. J¸ CøÇ°À SÁõÛß C¸¢uõÀ, Auß {µ¨¦ CøÇ°À __________ C¸US®.
(A) ø\÷hõ]ß (B) AiÛß (C) øuªß (-D) SÁõÛß
If guanine is present in one strand, the complementary strand will be having ________.
(a) Cytosine (b) Adenine (c) Thymine (d) Guanine

12. __________ À ÷Põ£õÀm EÒÍx.
(A) øÁmhªß B6 (B) øÁmhªß B1
(C) øÁmhªß B12 (-D) øÁmhªß B2
Cobalt is present in __________.
(a) Vitamin B6 (b) Vitamin B1
(c) Vitamin B12 (d) Vitamin B2

13. øÁmhªß D &°ß E°›¯À ö\¯ÀvÓß ªUP Aø©¨¦ __________.
(A) 25 øímµõUê÷Põ÷»PõÀ]ö£µõÀ
(B) 1, 25 øhøímµõUê÷Põ÷»PõÀ]ö£µõÀ
(C) 1, 24 øhøímµõUê÷Põ÷»PõÀ]ö£µõÀ
(-D) 24, 25 øhøímµõUê÷Põ÷»PõÀ]ö£µõÀ
Biologically active form of Vitamin D is :
(a) 25 hydroxycholecalciferol
(b) 1, 25 dihydroxycholecalciferol
(c) 1, 24 dihydroxycholecalciferol
(d) 24, 25 dihydroxycholecalciferol

14. ø£¸÷Ám øP÷Úêß CønUPõµo :
(A) £õ죵ì (B) ö£õmhõ]¯®
(C) Põ¨£º (-D) C¸®¦
Co-factor for Pyruvate Kinase is :
(a) Phosphorus (b) Potassium
(c) Copper (d) Iron

15. ‘PAGE’ &CÀ ‘SDS’ &I ÷\º¨£uß ÷|õUP® :
(A) ¦µuzvß «x ^µõÚ ªß_ø©ø¯ HØÓ
(B) ¦µuzøu PøµUP
(C) uõ[PÀ Pøµ\¼ß öÁ¨£zøuU SøÓUP
(-D) ]UP»õÚ ¦µuzøu {ø»¨£kzu
The purpose of adding ‘SDS’ in ‘PAGE’ is to :
(a) Impart uniform charge on protein
(b) Solubilize the protein
(c) To reduce the heat of buffer
(d) Stabilize the complex protein

5 7663

£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. uõ[PÀ Pøµ\À GßÓõÀ GßÚ ?
What is a buffer ?

17. ¦µu[PÎß ‰ßÓõ®{ø» Aø©¨¤À ¤øn¨¦ \õµõ Cøh±kPÒ GßÓõÀ GßÚ ?
What are the non-bonded interactions in tertiary structure of a protein ?

18. ö|õvPÎß £À÷ÁÖ ÁøPPøÍ GÊxP.
Write the different classes of enzymes.

19. B÷Úõ©ºPÒ GßÓõÀ GßÚ ?
What are anomers ?

20. Aª» Gs GßÓõÀ GßÚ ?
What is acid number ?

21. \õºPõL¨ ÂvPøÍU TÖP.
State Chargaff’s rules.

22. Á¸ÂUP¨£mh ¦µu[PÒ £ØÔ ]Ö SÔ¨¦ ÁøµP.
Write a short note on derived lipids.

23. ÷©U÷µõ uÛ©[PÎß ö£¯ºPøÍ GÊxP.
Name the macro elements.

24. u¯ªÛß (B1) E°›¯À ö\¯À£õkPÒ ¯õøÁ ?
What are the biological functions of thiamine (Vitamin B1) ?

[ v¸¨¦P / Turn over

7663 6

£S-v & III /PART - III
SÔ¨¦ : H÷uÝ® 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. EmP¸Âß £h® Áøµ¢x £õP[PøÍU SÔUPÄ®.
Draw and label the parts of nucleus.

26. DNA ©ØÖ® RNA BQ¯ÁØÔß ö\¯À£õkPøÍ ÂÍUSP.
Explain the functions of DNA and RNA.

27. |® Eh¼À CßÔ¯ø©¯õu Aª÷Úõ Aª»[PÒ ¯õøÁ ?
What are the essential amino acids in our body ?

28. A÷£õ ö|õv, ÷íõ÷»õ ö|õv GßÓõÀ GßÚ ?
What are apoenzyme and holoenzyme ?

29. øÁmhªß E Cß Gvº BUêá÷ÚØÓ £sø£ ÂÍUSP.
Explain the antioxidant property of Vitamin ‘E’.

30. ¦Ñ›ß ©ØÖ® â[U BQ¯ÁØÔß ö\¯À£õkPøÍU SÔ¨¤kP.
Give the functions of ‘Fluorine’ and ‘Zinc’.

31. G¤©µõUPÀ GßÓõÀ GßÚ ?
What is epimerisation ?

32. ¤³›ß Põµ[PÒ £ØÔ ]Ö SÔ¨¦ ÁøµP.
Write short notes on purine bases.

33. ö\£õ¼ß ÁiÁø©¨ø£z u¸P.
Give the structure of Cephalin.

7 7663

£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) ö\À¼ß ø©m÷hõPõsi›¯õÂß ö\¯À£õkPøÍ ÂÁ›UPÄ®.
AÀ-»-x
(B) ¦µu ÁiÁø©¨¤À EÒÍ |õßS £i{ø»PÒ £ØÔ ÂÁ›UPÄ®.
(a) Explain the functions of mitochondria of the cell.

OR

(b) Explain the four hierarchical levels of protein structure.

35. (A) Põº÷£õøím÷µmkPÒ ÁøP¨£õmøh GkzxUPõmkPÐhß ÂÍUSP.
AÀ-»-x
(B) ö|õvPÎß ÂøÚ÷ÁPzøu ©õØÖ® PõµoPÒ £ØÔ öuÎÁõP GÊxP.
(a) Give the classification of carbohydrates with examples.

OR

(b) Write in detail about the main factors that alter the speed of enzymatic reactions.

36. (A) Aø©÷»õì ©ØÖ® Aø©÷»õö£Uiß BQ¯ÁØÔØQøh÷¯ EÒÍ
÷ÁÖ£õkPøÍ SÔ¨¤kP.
AÀ-»-x
(B) £õì÷£õ¼¨¤kPÒ ©ØÖ® AÁØÔß ÁøP¨£õk £ØÔ Â›ÁõP ÂÍUSP.
(a) Mention the differences between amylose and amylopectin.

OR

(b) Explain in detail about phospholipids and their classification.

[ v¸¨¦P / Turn over

7663 8

37. (A) DNA ©ØÖ® RNA &UPÐUS Cøh÷¯ EÒÍ ÷ÁÖ£õkPøÍ ÂÍUSP.
AÀ-»-x
(B) øÁmhªß A &ß ö\¯À£õkPÒ ¯õøÁ ?
(a) Explain the differences between DNA and RNA.

OR

(b) What are the functions of Vitamin ‘A’ ?

38. (A) C¸®¤ß ö\¯À£õkPÒ, EÔg_uø» £õvUS® PõµoPÒ ©ØÖ® SøÓ£õk
£ØÔ SÔ¨¦ ÁøµP.
AÀ-»-x
(B) |õmh Ásn¨¤›øP •øÓ°ß Ai¨£øh ¯õx ?
(a) Give an account on functions, factors affecting absorption and deficiency state of iron.

OR

(b) What is the basis of affinity chromatography ?

-o0o-

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