BIO202 — Biochemistry I — Midterm Past Papers & Solved MCQs

1. Q1. In the open-chain form of carbohydrates, one of the carbon atoms i double-bonded to an oxygen atom fo form

   • A.Carboxyl group✓ Correct
   • B.CEC
   • C.Hydroxyl group
   • D.Carbonyl group

2. Q2. Starch is an example of

   • A.Polysaccharides✓ Correct
   • B.Monosaccharides
   • C.Disaccharides
   • D.Oligosaccharides

3. Q3. Which of the following is not a property of carbohydrates

   • A.Raw material for glycolysis
   • B.Major source of energy
   • C.Glucose is important monomer
   • D.Contain many amino acids✓ Correct

4. Q4. Starch is found in

   • A.Viruses
   • B.Bacteria
   • C.Plants✓ Correct
   • D.Animals

5. Q5. C6H12O6 is the formula of

   • A.Maltose
   • B.Lactose
   • C.Sucrose
   • D.Glucose✓ Correct

6. Q6. All the monosaccharides except contain one or more asymmetric carbon atoms

   • A.Galactose
   • B.Sucrose
   • C.dihydroxyacetone✓ Correct
   • D.Glucose

7. Q7. Sucrose is an example of

   • A.Oligosaccharide
   • B.Monosaccharide
   • C.Polysaccharide
   • D.Disaccharide✓ Correct

8. Q8. Glucose is an example of

   • A.Monosaccharide✓ Correct
   • B.Polysaccharide
   • C.Disaccharide
   • D.Oligosaccharide

9. Q9. C12H22O11 is the formula of

   • A.Glucose
   • B.Lactose
   • C.Sucrose✓ Correct
   • D.Maltose

10. Q10. themostfrequentlyusedsystematicnomenclaturenamethefattyacidafterthehydrocarbonwith -oicbeingsubstitutedforthefinal.........

    • A.e✓ Correct
    • B.d
    • C.a
    • D.b

11. Q11. theamidegroupof--------servesassiteofattachmentforoligosaccharidechaininglycoprotein

    • A.serine
    • B.threonine
    • C.asparagine
    • D.allofthese✓ Correct

12. Q12. theionfoundinthehaemgroupiswhat--------

    • A.Mg+
    • B.O-2
    • C.Fe+2✓ Correct
    • D.Fe+3

13. Q13. hydrogenationoffattyacidleadstothehardeningofnaturaloilandformationofmargarine because

    • A.transdoublebondareconvertedtocisdoublebonds
    • B.cisdoublebondisconvertedtotransdoublebonds
    • C.doublebondareconvertedtosinglebond✓ Correct
    • D.singlebondisconvertedtodoublebond

14. Q14. fattyacidareclassifiedonthebasisofhydrocarbonchainlengthinclude

    • A.mediumchainfattyacid(6-12c)
    • B.shortchainfattyacid(2-4c)
    • C.longchainfattyacid(14-18c)
    • D.alloftheabove✓ Correct

15. Q15. whichofthefollowingformoflipidarealsoreferredasneutrallipid?

    • A.triacylglycerol✓ Correct
    • B.phospholipid
    • C.steroid
    • D.wax

16. Q16. thefollowingsaltiswaterinsoluble

    • A.K
    • B.Na
    • C.Mg✓ Correct
    • D.Zn

17. Q17. whichstatementaboutaminoacidatphysiologicalph.istrue?

    • A.thecarboxylgroupisdissociatedandaminogroupisprotonated✓ Correct
    • B.onlythecarboxylgroupisdissociated
    • C.aminogroupisprotonated
    • D.thereisnochargeoneitheroftheaminogrouporcarboxylgroup.

18. Q18. theformationoffurfuralproductandtheircondensationwithorganicphenoltogive characteristiccoloredcompoundformsthebasesofbiochemicaltestsusedforthedetectionof carbohydrateanexampleofsuchtestis

    • A.Molisch‘stest✓ Correct
    • B.Benedict’stest
    • C.Ninhydrintest
    • D.Greasespottest

19. Q19. Onedegradationproductofhemoglobinisthebrownbilepigmentbilirubin.thisstepoccurin

    • A.bile
    • B.liver✓ Correct
    • C.kidney
    • D.heart

20. Q20. thequaternarystructureofhemoglobinisbestdescribedas

    • A.dimeroftwomyoglobindimers
    • B.tetramerofidenticalsubunit
    • C.tetrameroffourdifferentsubunit
    • D.tetrameroftwodifferentsubunit✓ Correct

21. Q21. degreeofsaturation(Y)(%)ofoxygenbindingsitesonallmyoglobinorhemoglobinmolecule canbeanyvaluebetween........

    • A.0and1
    • B.-1and+1
    • C.0and100✓ Correct
    • D.noneoftheabove

22. Q22. immunoglobulinare.......Proteinandhave......and.......Components.

    • A.catalytic,variable,constant
    • B.protective,variable,constant✓ Correct
    • C.protective,non-variable,constant
    • D.Enzymatic,variable,constant

23. Q23. theoxygenbindingdietinhemoglobinandmyoglobin?

    • A.hemegroup✓ Correct
    • B.globingroup
    • C.ca+
    • D.Mg+

24. Q24. onceahemegroupisoxidized,whatmoleculeisproduce?

    • A.Methemoglobin✓ Correct
    • B.hemoglobin
    • C.myoglobin
    • D.hemoglobinc

25. Q25. ................Isanexampleofcontractileprotein.

    • A.myosin✓ Correct
    • B.amylase
    • C.hemoglobin
    • D.Fibrinogen

26. Q26. TheRgroupishydrogenatomin

    • A.Lysine
    • B.Alanine
    • C.Glycine✓ Correct
    • D.Proline

27. Q27. thethree-dimensionalarrangementoftwoormorepolypeptidechainiscalledas

    • A.primarystructure
    • B.secondarystructure
    • C.tertiarystructure
    • D.quaternarystructure✓ Correct

28. Q28. whatarethemainthingsresponsibleforcausingtheBohrshift?

    • A.increasecarbondioxidepressure✓ Correct
    • B.increaseoxygenrequirement
    • C.increaseh+ion
    • D.carbonmonooxidehighaffinityforhemoglobin

29. Q29. whichtypeofmembranelipidcontainanacidicoligosaccharide?

    • A.globosid
    • B.phosphatidylinositol
    • C.cerebroside
    • D.ganglioside✓ Correct

30. Q30. theofunsaturatedfattyacidwithdoublebondendsin

    • A.enoic✓ Correct
    • B.anoic
    • C.dnoic
    • D.noneoftheabove

31. Q31. thecarbonoftheterminalmethylgroupiscalledthe.....regardlessofthechainlength

    • A.alpha
    • B.beta✓ Correct
    • C.gamma
    • D.none

32. Q32. Hemoglobin,theredpigmentinblood,consistofaproteincomponentandtheironcomplexof derivative

    • A.porphyrin✓ Correct
    • B.iron
    • C.protein
    • D.benzenering

33. Q33. oxyhemoglobindissociationcurveBohreffectdecreaseaffinityofthehemoglobinfor......gas causedbyanincreaseofcarbondioxideph.etc.

    • A.oxygen✓ Correct
    • B.carbondioxide
    • C.ozone
    • D.nitrogen

34. Q34. theprocessbywhichoxygenentersthebloodfromthealveoliis

    • A.facilitateddiffusion
    • B.diffusion✓ Correct
    • C.activetransport
    • D.none

35. Q35. thepk2valueforglycineis

    • A.2.34
    • B.5.97
    • C.9.60✓ Correct
    • D.7.65

36. Q36. currentevidencesuggeststhatdietrichinomega3fattyacidarebeneficialparticularlyfor

    • A.cardiovasculardisease
    • B.Alzheimerdisease
    • C.arthritis
    • D.allofthegiven✓ Correct

37. Q37. duringthetensestageofhemoglobin,thebindingsitesare.......

    • A.hindered✓ Correct
    • B.opened
    • C.closed
    • D.replaced

38. Q38. fattyacidproducesalkylalcoholby.......ofcarboxylicgroup

    • A.esterification
    • B.oxidation
    • C.reduction✓ Correct
    • D.methylation

39. Q39. thefollowingsaltiswatersoluble

    • A.Ca
    • B.Mg
    • C.Zn
    • D.K✓ Correct

40. Q40. thepartialpressureofoxygenneededtoachievehalfsaturationofthebindingsitesiscalled......

    • A.p50✓ Correct
    • B.p60
    • C.p70
    • D.none

41. Q41. thenumberofdissociatedhydrogensinhistidineis....

    • A.zero
    • B.one
    • C.two✓ Correct
    • D.three

42. Q42. theexampleofnaturalporphyrinsincludes.......

    • A.cytochromec
    • B.hemoglobin
    • C.myoglobin
    • D.alloptionarecorrect✓ Correct

43. Q43. whichwouldbeapropertyofallthemajortypesoflipidinthiscellmembrane

    • A.theywouldbejoinedtoeachotherthroughcovalentbond
    • B.theywouldbesaponifiableinbaseandhydrolyzedinacid
    • C.theywouldhavepolarheadsandnon-polartails✓ Correct
    • D.theywouldbecomposedoffivecarbonunit

44. Q44. proteincanexistintheformofmulti=subunits.Anadvantageofmultisubunitstructureisthatthe differentsubunitcanhavedifferentactivitiesandcooperateinacommonfunction.thisisbest understoodbythestructureoftheenzyme.......whichexistasamultiproteincomplex

    • A.hemoglobin
    • B.ribozyme
    • C.pyruvatedehydrogenase✓ Correct
    • D.lgA

45. Q45. whatisthenameofmoleculesformedwhenoxygenbindtohemoglobin

    • A.oxyhemoglobin✓ Correct
    • B.carbaminohemoglobin
    • C.oxglobin
    • D.oxygenhemoglobin

46. Q46. allofthefollowingareinvolvedinstabilizingthethree-dimensionalstructureofproteinexpect

    • A.glycosidicbond✓ Correct
    • B.hydrophobicinteraction
    • C.disulphidebridge
    • D.hydrogenbonds

47. Q47. whichofthefollowingisfoundinbraintissue?

    • A.D-alanineandD-glutamate
    • B.freeD-serineandD-aspartate✓ Correct
    • C.freeD-serineandD-alanine
    • D.freeD-serineandD-glutamate

48. Q48. theproximalhistidineF8ofmyoglobinbindsdirectlytothe.....ofthehemegroup.

    • A.iron✓ Correct
    • B.magnesium
    • C.zinc
    • D.calcium

49. Q49. thepkavalueofaceticacidis......

    • A.3.76
    • B.4.76✓ Correct
    • C.5.76
    • D.7.66

50. Q50. allkindoflipidare.......Inwater.

    • A.miscible
    • B.soluble
    • C.insoluble✓ Correct
    • D.allofthegiven

51. Q51. the......bondformedbycovalentlyjoiningoftwoaminoacidsthroughamidelinkage.

    • A.amide
    • B.peptide✓ Correct
    • C.sulphide
    • D.carboxyl

52. Q52. theseconddegradationproductofhemoglobinisgreenpigmentbiliverdin,theresultof breakdownbyoxidationoccursin....

    • A.liver
    • B.heart
    • C.kidney
    • D.spleen✓ Correct

53. Q53. theionfoundinhaemgroupiswhat.......

    • A.Mg+2
    • B.O2-
    • C.Fe+2✓ Correct
    • D.Fe+3

54. Q54. Alphahelicesarethemostcommonsecondarystructurefoundinprotein,nearlyall.....protein containalphahelicesintheirmembranespanningdomain

    • A.transmolecules✓ Correct
    • B.protective
    • C.transport
    • D.globular

55. Q55. whichofthefollowingstatementabouterythrocytesiscorrect

    • A.theylacknucleus✓ Correct
    • B.theclotbloods
    • C.theyfightinfection
    • D.theyareproducedinspleen

56. Q56. margarinesarevegetableoiltreatedwithpartialhydrogenationtoformasemisolid.....

    • A.butter
    • B.oil
    • C.fat✓ Correct
    • D.protein

57. Q57. theneteffectofaffinityofhemoglobinforthelastoxygenboundisapproximately......times greaterthanitsaffinityforthefirstoxygenbound

    • A.300✓ Correct
    • B.302
    • C.301
    • D.356

58. Q58. someproteincontainadditionalaminoacidthatarisebymodificationofaminoacidalready presentinthepeptidei.e.aftertheproteinhasbeensynthesized.anexampleofaminoacidis

    • A.Lysine
    • B.5-hydroxylysine✓ Correct
    • C.Peptidylproline
    • D.Glutamicacid

59. Q59. allofthefollowingaretrueforaminoacidexcept

    • A.thegeneticcodespecifiedandcodeforbothstandardandnon-standardaminoacid✓ Correct
    • B.thesidechainofaminoacidinfluencestheirsolubilityinwater
    • C.thecarbonatompresentbetweentheaminogroupandcarboxylgroupintheaminoacidisknownas acarbon.
    • D.intheformationofprotein,aminoacidarejoinedtogetherbylinkageknownaspeptidebond.

60. Q60. inmyoglobinandhemoglobin,hemeiscovalentlylinkedwith....Aminoacid(eightresidueoff helix.

    • A.histidinef8✓ Correct
    • B.alaninef8
    • C.both
    • D.noneofthem

61. Q61. identifytheaminoacidcontainingnonpolar,aliphaticRgroups.

    • A.phenylalanine,tyrosineandtryptophan
    • B.glycine,alanine,leucine✓ Correct
    • C.lysine,arginine,histidine
    • D.serine.theorine,cysteine

62. Q62. theoctetrulesrefertothetendencyofatomtoprefertohaveelectroninthevalenceshell.

    • A.8✓ Correct
    • B.9
    • C.10
    • D.11

63. Q63. whatarethecomponentoftriglyceridemolecules?

    • A.oneglycerolandthreefattyacids✓ Correct
    • B.oneglycerolandtwofattyacids
    • C.oneglycerolandonecholesterol
    • D.oneglycerolandtwocholesterol

64. Q64. unesterifiedfattyacidaretransportedinthecirculationinassociationwith......

    • A.albumin✓ Correct
    • B.gelatin
    • C.casein
    • D.noneoftheabove

65. Q65. fattyacidoccursinthebodymainlyas.......innaturalfatandoil

    • A.protein
    • B.esters✓ Correct
    • C.oils
    • D.fattyacid

66. Q66. fatsarethe......offattyacidandglycerol

    • A.esters✓ Correct
    • B.ethers
    • C.isomer
    • D.tautomer

67. Q67. duringconformationalchangeseachsuccessiveadditionofoxygenshifttheequilibriumfurther towardthe......statethus,theadditionofoxygeninthelungs

    • A.relaxedstate✓ Correct
    • B.tensestate
    • C.relaxedortensestate
    • D.nochange

68. Q68. approximatelyhowmanyhemoglobinarethereineachredbloodcells?

    • A.30million
    • B.300million✓ Correct
    • C.50million
    • D.5million

69. Q69. hemoglobinmustbindwithoxygenefficientlyinthelungs,wherethepo2isabout......mmHgand releaseoxygeninthetissue.wherepo2isabout....mmHg

    • A.100and35to40✓ Correct
    • B.50and35to40
    • C.60and35to40
    • D.40and35to40

70. Q70. whathappentotheredbloodcellsifthehemegroupisremovedfromhemoglobin

    • A.redbloodcellswouldnotbeabletobindoxygen✓ Correct
    • B.redbloodcellswouldnotbeabletoreproduce
    • C.whitebloodcellswouldnotbeabletoreproduce
    • D.bloodclotsformationwouldbeinhabited

71. Q71. whichofthefollowingfattyacidwouldhavethelowestcriticalmicelleconcentration

    • A.C4-COOH
    • B.C5-COOH
    • C.C6-COOH
    • D.C8-COOH✓ Correct

72. Q72. Themeltingpointoffattyaciddependsuponchainlengthand......

    • A.theshapeoffattyacid
    • B.degreeofunsaturation✓ Correct
    • C.thepositionofdoublebond
    • D.chargeonthecarbon

73. Q73. theprocesswhichconvertunsaturatedfattyacidtosaturatedfattyacid......

    • A.hydrogenation✓ Correct
    • B.glycolysis
    • C.proteolysis
    • D.liquefaction

74. Q74. myoglobiniscomposedofasinglepeptidechainwhichhas.......

    • A.oneO2bindingsite✓ Correct
    • B.twoO2bindingsite
    • C.threeO2bindingsite
    • D.fourO2bindingsite

75. Q75. whichisacharacteristicofallthefattyacidcomponentsinthislipid?

    • A.theyallarehydrophobicbecausetheycontainoxygen
    • B.theyallcontainunbranchedcarbonchain✓ Correct
    • C.theyallcontainunconjugatedcisdoublebonds
    • D.theyarealljoinedtoglycerolthroughanesterbond

76. Q76. onceahemegroupisoxidized,whichmoleculeisproduced

    • A.methemoglobin✓ Correct
    • B.hemoglobin
    • C.myoglobin
    • D.hemoglobinc

77. Q77. thetwoendsofthepolypeptidechainareknownsasthe......and......terminus

    • A.C,N✓ Correct
    • B.R,S
    • C.a,b
    • D.D,L

78. Q78. whichcharacteristicdoesthislipidsharewithwax

    • A.bothcontainoneormorecarboxylgroup
    • B.bothcontainpolarheads
    • C.bothcontainthreefattyacid
    • D.bothcontainoneormoreesterbonds✓ Correct

79. Q79. motifsarealsoknownassupersecondarystructure.anexampleofmotiffoundinproteinis the......

    • A.bbarrel✓ Correct
    • B.bsheet
    • C.bturns
    • D.ahelix

80. Q80. thehydrolysisofstarchbytheenzymeamylaseproducesmaltose.inhumanbodymaltoseis furtherhydrolyzedbytheenzymemaltasetoproduce.......

    • A.galactose
    • B.glucose✓ Correct
    • C.maltotrisoe
    • D.mannose

81. Q81. allaminoacidexcept.........haveachiralcarbonandhavetwopossibleisomers

    • A.lysine
    • B.glycine✓ Correct
    • C.glutamicacid
    • D.tryptophan

82. Q82. proteinpresentincellmembranemayfunctionas..........Ortransporters

    • A.receptors✓ Correct
    • B.hormone
    • C.immunoglobulins
    • D.storageprotein

83. Q83. what is the solubility of lipid in water

    • A.partially soluble
    • B.soluble
    • C.insoluble✓ Correct
    • D.partially insoluble

84. Q84. the cervices (pocket) created by ....... amino acid in the interior of myoglobin creates a binding pocket for heme

    • A.Polar
    • B.nonpolar✓ Correct
    • C.Basic
    • D.acidic

85. Q85. all of the following are true for lactose except

    • A.it is reducing sugar
    • B.it is found abundantly in grape juice✓ Correct
    • C.it is dextrorotatory
    • D.it is made of galactose and glucose

86. Q86. catalytic protein is called as

    • A.amino group protein
    • B.enzyme✓ Correct
    • C.catalysis
    • D.carbon R group chain

87. Q87. which of the following occur when hydrogen is reacted with vegetable oils?

    • A.the hydrogenated vegetable oil will contain fewer trans fats
    • B.the hydrogenated vegetable oil will become solid at room temperature✓ Correct
    • C.the hydrogenated vegetable oil will become oil
    • D.the hydrogenated vegetable oil will become saturated fat.

88. Q88. the folding of ....... Contiguous segments of polypeptide form secondary structure of protein

    • A.3-20
    • B.3-30✓ Correct
    • C.3-300
    • D.20

89. Q89. the three-dimensional arrangement of two or more polypeptide is called

    • A.primary structure
    • B.secondary structure
    • C.tertiary structure
    • D.quaternary structure✓ Correct

90. Q90. storage protein has ability to bind and store specific element or compounds ...... is an example of storage protein that store copper

    • A.hemoglobin
    • B.ferritin
    • C.ceruloplasmin✓ Correct
    • D.urease

91. Q91. this effect of pH and carbon dioxide concentration on the binding and release of oxygen by hemoglobin is called the

    • A.Bohr effect✓ Correct
    • B.Nelson effect
    • C.nucleus effect
    • D.electron removal

92. Q92. the following sterol is present in cell membrane of fungi

    • A.campesterol
    • B.ergosterol✓ Correct
    • C.stigmasterol
    • D.sitosterol

93. Q93. osazone are obtain by adding a mixture of phenylhydrazine hydrochloride and sodium acetate to sugar solution and heating in water bath for 45 min. Which two atom in the sugar molecule are involved in osazone formation?

    • A.C1, C2✓ Correct
    • B.C1, C6
    • C.C1, C4
    • D.C3, C5

94. Q94. esters of fatty acid containing groups in addition to an alcohol and fatty acid is called as

    • A.derived lipid
    • B.complex lipid✓ Correct
    • C.simple lipid
    • D.none

95. Q95. excess iron has a significant affinity for specific organs particularly

    • A.the lungs, liver, and endocrine gland
    • B.the heart, liver, and endocrine gland✓ Correct
    • C.endocrine gland
    • D.liver only

96. Q96. out of 20 amino acids .... contain a secondary amino group is called imino acid

    • A.proline✓ Correct
    • B.serine
    • C.histidine
    • D.methionine

97. Q97. margarines are vegetable .......

    • A.Oil✓ Correct
    • B.Wax
    • C.Carbohydrate
    • D.protein

98. Q98. the main difference between saturated and unsaturated fatty acid is ......

    • A.the number of carbon atom
    • B.the presence of keto group
    • C.the one is absent from phospholipid
    • D.the presence of double✓ Correct

99. Q99. The most frequently used systematic nomenclature names the fatty acid after the hydrocarbon with -oic being substituted for the final ——

    • A.e
    • B.ane✓ Correct
    • C.ene
    • D.yne

100. Q100. The amide group of serves as a site of attachment for oligosaccharide chains in glycoproteins.

     • A.asparagine✓ Correct
     • B.glutamine
     • C.serine
     • D.All of these

101. Q101. Hydrogenation of fatty acids leads to hardening of natural oils and formation of margarine because:

     • A.trans double bonds are converted to cis double bonds.
     • B.cis double bonds are converted to trans double bonds.
     • C.double bonds are converted to single bonds.✓ Correct
     • D.single bonds are converted to double bonds

102. Q102. Fatty acids are classified on The Basis Of Hydrocarbon Chain Length include

     • A.Medium Chain Fatty Acids(6-12 C)
     • B.Short Chain Fatty Acids(2-4 C)
     • C.Long Chain Fatty Acids (14-18 C)
     • D.All of above✓ Correct

103. Q103. Which of the following form of lipids are also referred as neutral lipids?

     • A.triacylglycerols✓ Correct
     • B.phospholipids
     • C.sphingolipids
     • D.steroids

104. Q104. Which statement about amino acids at physiological pH is true?

     • A.The carboxyl group is dissociated (-COO-) and the amino group is protonated (NH3+ )✓ Correct
     • B.Only the carboxyl group is dissociated (-COO-).
     • C.Only the amino group is protonated (NH3+ ).
     • D.There is no charge on either the carboxyl group or the amino group.

105. Q105. The sigmoidal binding curve of Hemoglobin for oxygen is possible due to ——— structure of hemoglobin.

     • A.multi-subunit✓ Correct
     • B.primary
     • C.secondary
     • D.tertiary

106. Q106. The formation of furfural products and their condensation with organic phenols to give characteristic coloured compounds forms the basis of biochemical tests used for the detection of carbohydrates. An example of such a testis

     • A.Molisch's test✓ Correct
     • B.Benedict's test
     • C.Fehling's test
     • D.Barfoed's test

107. Q107. One degradation product of Haemoglobin is the brown bile pigment bilirubin. This step occur in

     • A.liver✓ Correct
     • B.spleen
     • C.kidney
     • D.bone marrow

108. Q108. The quaternary structure of human hemoglobin is best described as a

     • A.dimer
     • B.tetramer of identical subunits
     • C.tetramer of two different subunits✓ Correct
     • D.monomer

109. Q109. Degree of Saturation (Y) (%) of Oxygen binding sites on all myoglobin or hemoglobin molecules can be any value between

     • A.0 and 100✓ Correct
     • B.0 and 1
     • C.0 and 50
     • D.None of the above

110. Q110. Immunoglobulin are —— proteins and have ———and —— components

     • A.Catalytic. Variable, Constant
     • B.Structural, Heavy, Light
     • C.Defense, Variable, Constant✓ Correct
     • D.Transport, Heavy, Light

111. Q111. The oxygen binding site in hemoglobin and myoglobin?

     • A.heme group✓ Correct
     • B.globin chain
     • C.iron atom
     • D.porphyrin ring

112. Q112. Once a heme group is oxidized, what molecule is produced?

     • A.methemoglobin✓ Correct
     • B.oxyhemoglobin
     • C.carboxyhemoglobin
     • D.deoxyhemoglobin

113. Q113. The three dimensional arrangement of two or more polypeptides is called

     • A.primary structure
     • B.secondary structure
     • C.tertiary structure
     • D.Quaternary structure✓ Correct

114. Q114. Which type of membrane lipid contains an acidic oligosaccharide?

     • A.globoside
     • B.ganglioside✓ Correct
     • C.cerebroside
     • D.sphingomyelin

115. Q115. The name of Unsaturated acids with double bonds end in ——

     • A.enoic✓ Correct
     • B.anoic
     • C.ynoic
     • D.dienoic

116. Q116. Haemoglobin, the red pigment in blood. consists of a protein component and the iron complex of derivative

     • A.porphyrin✓ Correct
     • B.heme
     • C.globin
     • D.bilirubin

117. Q117. OxyHemoglobin Dissociation Curve Bohr effect decreased affinity of haemoglobin for ———— gas caused by an increase of carbon dioxide pH etc

     • A.Oxygen✓ Correct
     • B.Carbon dioxide
     • C.Nitrogen
     • D.Hydrogen

118. Q118. Current evidence suggests that diet rich in omega 3 fatty acids are beneficial particularly for

     • A.heart disease✓ Correct
     • B.Alzheimer's disease
     • C.cancer
     • D.diabetes

119. Q119. Fatty acids occur in the body mainly as ———— in natural fats and oils

     • A.triglycerides✓ Correct
     • B.phospholipids
     • C.steroids
     • D.waxes

120. Q120. During conformational change each successive addition of O2 shifts the equilibrium further toward the —— state, thus addition of oxygen in the lungs.

     • A.Relaxed state✓ Correct
     • B.Tense state
     • C.No change
     • D.Intermediate state

Showing the first 120 of 161 MCQs.