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LifeSciencesModelQuestions(MCQ)01

Biochemistry:Carbohydrates_1(MCQ)

1. Thegeneralchemicalformulaofcarbohydrateisa. (CH2O)nb. (CH2O)2n

c. (CHO)nd. CnH2nO

2. Whichofthefollowingisanaldotriose?a. Dihydroxyacetoneb. Glyceraldehyde

c. Ribulosed. Erythrose

3. Whatisthemolecularformulaofsucrose?a. C12H22O11b. C10H20O10

c. C6H12O6d. C12H20O11

4. Theglycosidiclinkagebetweenglucosemoleculeinmaltoseisa. β1–4b. α1–2

c. α1–4d. β1–2

5. Aketopentosewillhave_____sterioisomers.a. 4b. 6

c. 8d. 10

6. Thereservefoodmaterialofgreenalgaeisa. Laminarinb. Chrysolaminarin

c. Floridianstarchd. Starch

7. Theonlycarbohydratewhichisnothavinganychiralcarbonatomisa. Glyceraldehydeb. Erythrose

c. Dihydroxyacetoned. Erythrulose

8. Selecttheoddonefromthefollowing.a. Arabinoseb. Xylose

c. Lyxosed. Erythrose

9. Apentosesugarreportedtobepresentinheartcellsa. Xyloseb. Arabinose

c. Lyxosed. Xylulose

10.Whichofthefollowingisanepimericpair?a. D‐glucoseandD‐mannoseb. D‐glucoseandD‐galactose

c. D‐glucoseandL‐glucosed. BothAandB

11. Selecttheoddonefromthefollowinga. Xylulose b. Dihydroxyacetonewww.ea

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c. Glyceraldehyde d. Ribulose12. WhichofthefollowingsugargiveapositiveresultwithSeliwanofftest

a. Sucroseb. Glucose

c. Galactosed. Mannose

13. Whichofthefollowingisaketotetrose?a. Erythruloseb. Xylulose

c. Sorbosed. Psicose

14. Theglycosidiclinkagebetweentwoglucosemoleculesinisomaltoseisa. α1–4b. β1–4

c. α1–6d. β1–6

15. Whichofthefollowingisanalphalactonea. Vit.Cb. Vit.D

c. Vit.Ad. Vit.K

16. Asweetenerusedinsugarlessgumsandcandiesa. Ribitolb. Xylitol

c. Inositold. Mannitol

17. Theglycosidiclinkageincellobioseisa. α1–4b. β1–4

c. α1–6d. β1–6

18. Pickouttheoddonefromthefollowinga. Deoxyriboseb. Rhamnose

c. Fucosed. Altrose

19. Lectinsare_________.a. Sugarsspecifictoproteinsb. Proteinsspecifictosugarsc. Enzymesspecifictocarbohydratesd. Carbohydratesspecifictoenzymes

20. Whichofthefollowingisaketotriose?a. Dihydroxyacetoneb. Glyceraldehyde

c. Ribulosed. Erythrose

21. Maltoseisadisaccharideof____a. Glucoseandgalactoseb. Glucoseandglucose

c. Glucoseandlactosed. Fructoseandlactose

22. Glycosidicbondinsucroseis____a. α1–4b. β1–4

c. α1–2d. β1–2

23. Minimumnumberofcarbonrequiredforaketosesugartohavecyclicstructureisa. 3 b. 4www.ea

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c. 5 d. 624. Analdohexosewillhave_____stereoisomers

a. 8b. 10

c. 14d. 16

25. Minimumnumberofcarbonrequiredforamonosaccharidea. 1b. 2

c. 3d. 4

26. Whichofthefollowinganimalpossesscellulose?a. Coelenteratesb. Sponges

c. Tunicatesd. Protozoans

27. Glucoseresiduesinamylosearelinkedbya. α1–4b. β1–4

c. α1–6d. β1–6

28. Chitinisa_______a. HomopolysaccharideofNacetylglucosamineb. HeteropolysaccharideofNacetylglucosamineandNacetylmuramicacidc. Acomplexpolymerofmanysugarsd. AbranchedhomopolysaccharideofNacetylglucosamine

29. Thebranchpointsofamylopectinareconnectedbya. α1–4b. β1–4

c. α1–6d. β1–6

30. Whichofthefollowingisanexampleforhomopolysaccharide?a. Celluloseb. Starch

c. Glycogend. Allofthese

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