TN 11th Question Paper 2023 Bio-Chemistry

Tamil Nadu
State Board

2023
QUESTION
PAPER

No. of Printed Pages : 8
6763
!6763IstYearBiochemistry! £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 ©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

6763 2

1. pH AÍÃmiß GÀø» :
(A) 0 to 7 (B) 1 to 14 (C) 1 to 7 (D) 0 to 14
The range of pH scale is :
(a) 0 to 7 (b) 1 to 14 (c) 1 to 7 (d) 0 to 14

2. ¤ßÁ¸ÁÚÁØÖÒ Gx »[S ìhõºa GÚ AÔ¯¨£kQÓx ?
(A) ö\À¾÷»õì (B) QøÍU÷Põáß
(C) Aø©÷»õö£Uiß (D) Aø©÷»õì
Which of the following is known as animal starch ?
(a) Cellulose (b) Glycogen
(c) Amylopectin (d) Amylose

3. Cµsk ]ìiß A»SPÐUQøh÷¯ E¸ÁõS® \P¨¤øn¨¦ __________
GßÓøÇUP¨£kQÓx.
(A) øímµáß ¤øn¨¦ (B) Áõshº ÁõÀì Âø\
(C) ö£¨øhk ¤øn¨¦ (D) øh&\Àø£k ¤øn¨¦
The covalent bond formed between two cysteine residues is called __________.
(a) Hydrogen bond (b) Vander Waals forces
(c) Peptide bond (d) Di-sulfide bond

4. uõÁµ ö\À_Áº __________ BÀ E¸ÁõUP¨£mhx.
(A) _U÷µõì (B) SÐU÷Põì
(C) L¤µU÷hõì (D) ö\À¾÷»õì
Plant cell wall is made up of :
(a) Sucrose (b) Glucose
(c) Fructose (d) Cellulose

5. ÂøÚ£k ö£õ¸øÍ JzxÒÍ uk¨£õß __________ GßÓøÇUP¨£kQÓx.
(A) ÷£õmiz vÓÚØÓ uk¨£õß
(B) ÷£õmiz ußø©²ÒÍ uk¨£õß
(C) ¤Óø©¯ uk¨£õß
(D) ÷£õmiz ußø©¯ØÓ uk¨£õß
The inhibitor that resembles the substrate is called __________.
(a) Non-competitive inhibitor
(b) Competitive inhibitor

(c) Allosteric inhibitor
(d) Uncompetitive inhibitor

3 6763

6. ¤ßÁ¸ÁÚÁØÖÒ Gx £õÀ \ºUPøµ GÚ AÔ¯¨£kQÓx ?
(A) ©õÀ÷hõì (B) _U÷µõì (C) L¤µU÷hõì (D) »õU÷hõì
Which of the following is known as milk sugar ?
(a) Maltose (b) Sucrose (c) Fructose (d) Lactose

7. ö»]vÛÀ EÒÍ ø|mµáß Põµ® __________.
(A) GzuÚõÀ A«ß (B) ÷Põ¼ß
(C) I÷Úõ]mhõÀ (D) ö\›ß
Nitrogenous base present in lecithin is __________.
(a) Ethanol amine (b) Choline
(c) Inositol (d) Serine

8. __________ íõº÷©õß \ªUøb ÁÈ•øÓPÎÀ Cµshõ® yxÁµõP ö\¯À£kQÓx.
(A) CAMP (B) AMP (C) ATP (D) ADP
__________ acts as second messenger in hormonal signaling pathways.
(a) CAMP (b) AMP (c) ATP (d) ADP

9. øÁmhªß C SøÓ£õmhõÀ EshõS® ÷|õ´ :
(A) B£zuõÚ Cµzu ÷\õøP (B) ìPºÂ
(C) ö£›ö£› (D) ›UPmì
Deficiency of Vitamin C disease is :
(a) Pernicious anemia (b) Scurvy
(c) Beriberi (d) Rickets

10. ö\¸÷»õ¤Íõìªß öPõskÒÍ uõx __________.
(A) xzu|õP® (B) Põ¨£º (C) C¸®¦ (D) A÷¯õiß
Ceruloplasmin contains _________ mineral.
(a) Zinc (b) Copper (c) Iron (d) Iodine

11. __________ I E¸ÁõUP A÷¯õiß ÷uøÁ¨£kQÓx.
(A) øuµõUêß (B) Cß_¼ß
(C) PõÀ]÷hõÛß (D) øÁmhªß B12
Iodine is required for the formation of __________.

(a) Thyroxine (b) Insulin
(c) Calcitonin (d) Vitamin B12

[ v¸¨¦P / Turn over

6763 4

12. ÷£õ»ßìQ Gs, öPõʨ¤¾ÒÍ __________ öPõʨ¦ Aª»[PøÍ SÔUQÓx.
(A) {øÓÄØÓ (B) GÎvÀ B¯õS®
(C) {øÓÄÓõ (D) GÎvÀ B¯õPõu
Polenske number indicates the __________ fatty acid in the fat.
(a) Saturated (b) Volatile
(c) Unsaturated (d) Non-volatile

13. __________ SøÓ£õmhõÀ ö£À»Uµõ E¸ÁõQÓx.

(A) ÷£ß÷hõuÛU Aª»® (B) £÷¯õiß
(C) L÷£õ¼U Aª»® (D) {¯õ]ß
Pellagra occurs due to the deficiency of :
(a) Pantothenic acid (b) Biotin
(c) Folic acid (d) Niacin

14. __________ S÷ÍõÁº Cø» Aø©¨ø£U öPõskÒÍx.

(A) mRNA (B) DNA (C) rRNA (D) tRNA
________ has a clover leaf structure.
(a) mRNA (b) DNA (c) rRNA (d) tRNA

15. ªß¦» uõUPzøu £¯ß£kzv, ªß÷ÚØÓ® ö£ØÓ ‰»UTÖPøÍ ¤›US® •øÓ
__________ .

(A) {Ó©õø» Jΰ¯À
(B) ÁiuõÒ Ásn¨ ¤›øP •øÓ
(C) ªß•øÚU PÁºa]
(D) A¯Û¨ £›©õØÓ Ásn¨¤›øP •øÓ
The separation technique of charged molecule under the influence of current is
described as ___________.
(a) Spectrophotometry
(b) Paper chromatography

(c) Electrophoresis
(d) Ion exchange chromatography

5 6763

£Sv & II / PART - II
SÔ¨¦ : GøÁ÷¯Ý® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs 24 &US
Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x2=12
Note : Answer any six questions. Question No. 24 is Compulsory.
16. EmP¸Âß £h® Áøµ¢x £õP[PøÍ SÔUPÄ®.
Draw and label the parts of a nucleus.

17. S÷µõ÷©õ ¦µu® £ØÔ SÔ¨¦ ÁøµP.
Write a note on chromoprotein.

18. ö£¨øhk ¤øn¨¦PÒ GßÓõÀ GßÚ ?
What is peptide bond ?

19. ö|õvPÎß xønUPõµoPÒ GßÓõÀ GßÚ ?
What are enzyme co-factors ?

20. L¤µU÷hõì ©ØÖ® ÷\õi¯® £õuµ\ P»øÁ BQ¯ÁØÔØQøh÷¯¯õÚ ÂøÚø¯
SÔ¨¤kP.
Mention the reaction between Fructose and Sodium amalgam.

21. øÁmhªß D &°ß ‰»[PøÍ GÊxP.
Write the sources of Vitamin D.

22. xzu|õP® (â[U) SøÓ£õmk ÷|õ´ AÔSÔPÒ CµsiøÚU SÔ¨¤kP.
Mention any two deficiency symptoms of Zinc.

23. £S¨£õ´Ä « ø©¯ »US•øÓ £ØÔ ]Ö SÔ¨¦ ÁøµP.
Write short notes on Analytical ultra centrifugation.

F]¨÷£õuÀ GßÓõÀ GßÚ ?

24.
What is Rancidity ?

[ v¸¨¦P / Turn over

6763 6

£Sv & III / PART - III
SÔ¨¦ : H÷uÝ® BÖ ÂÚõUPÐUS Âøh¯ÎUPÄ®. ÂÚõ Gs 33 &US
Pmhõ¯©õP Âøh¯ÎUPÄ®. 6x3=18
Note : Answer any six questions. Question No. 33 is Compulsory.
25. Cµzuzvß ö\¯À£õkPÒ GøÁ÷¯Ý® ‰ßÔøÚ¨ £mi¯¼kP.
List out any three functions of blood.

26. ö»]vß ©ØÖ® ö\L£õ¼ß ÁiÁø©¨¦PøÍz u¸P.
Give the structure for lecithin and cephalin.

27. öPõÀ»õáÛß ‰ßÖ öÁÆ÷ÁÖ ÁøPPÒ ¯õøÁ ?
What are the three different types of collagen ?

28. ö|õvPÎß ©¸zxÁzxøÓ £¯ßPÎÀ ‰ßÔøÚ GÊxP.
Write any three medical applications of enzymes.

29. {Ó©õø» Jΰ¯À ©õÛ°ß £¯ß£õkPÒ ¯õøÁ ?
What are the applications of Spectrophotometry ?

30. J¼÷Põ {³UÎ÷¯õøhkPÒ GßÓõÀ GßÚ ? GkzxUPõmkPÒ u¸P.
What are Oligonucleotides ? Give examples.

31. S÷µõª¯zvß ö\¯À£õkPÒ ¯õøÁ ?
What are the functions of Chromium ?

32. Aø©÷»õì ©ØÖ® Aø©÷»õö£Uiß BQ¯ÁØÔØQøh÷¯ EÒÍ ÷ÁÖ£õk&
PøÍ SÔ¨¤kP.
Mention the differences between amylose and amylopectin.

øÁmhªß A &°ß SøÓ£õmk ÷|õ´PÒ £ØÔ SÔ¨¦ ÁøµP.

33.
Write a note on deficiency symptoms of Vitamin A.

7 6763

£Sv & IV / PART - IV
SÔ¨¦ : AøÚzx ÂÚõUPÐUS® Âøh¯ÎUPÄ®. 5x5=25
Note : Answer all the questions.
34. (A) ¦÷µõ÷P›÷¯õiU ©ØÖ® ³÷P›÷¯õiU ö\ÀPøÍ ÷ÁÖ£kzxP.
AÀ»x
(B) ¦µu[PÎß ÷ÁÖ£mh ö\¯À£õkPøÍ ÂÍUSP.
(a) Distinguish between prokaryotic and eukaryotic cell.
OR
(b) Explain the functional diversity of proteins.

35. (A) α _¸Ò ©ØÖ® β &uõÒ ÷ÁÖ£kzxP.
AÀ»x
(B) ö|õvPÎß £À÷ÁÖ ÁøPPøÍ GkzxUPõmkhß ÂÁ›UPÄ®.
(a) Distinguish between α - helix and β - pleated sheets.
OR
(b) Describe the different classes of enzymes with examples.

36. (A) Põº÷£õøím÷µmkPÎß ö\¯À£õkPøÍ £ØÔ GÊxP.
AÀ»x
(B) öPõ»ìiµõ¼ß £s¦PÒ ©ØÖ® Auß •UQ¯zxÁ® £ØÔ Â›ÁõP ÂÍUSP.
(a) Write about the functions of carbohydrates.
OR
(b) Write in detail about properties and importance of cholesterol.

37. (A) DNA &Âß Áõm\ß&Q›U Aø©¨¤ß ]Ó¨£®\[PøÍ öuÎÁõÚ £h®
Áøµ¢x £õP® SÔzx ÂÍUSP.
AÀ»x
(B) PõÀ]¯® EÔg\¨£kuø» £õvUS® PõµoPøÍ ÂÍUSP.
(a) Draw a neat labelled diagram and explain the salient features of Watson -
Crick structure of DNA.

OR
(b) Explain the factors affecting absorption of calcium.

[ v¸¨¦P / Turn over

6763 8

38. (A) ÷£õ¼U Aª»zvß ö\¯À£õkPÒ ©ØÖ® SøÓ£õmk ÷|õ´ AÔSÔPøÍ
£ØÔ ÂÍUSP.
AÀ»x
(B) ÁiuõÒ Ásn¨¤›øP •øÓ°øÚ £ØÔ Â›ÁõP GÊxP.
(a) Explain the functions and deficiency symptoms of Folic acid.
OR
(b) Write in detail about paper chromatography.

-o0o-