JOINT UNIVERSITIES PRELIMINARY EXAMINATIONS BOARD
2015 EXAMINATIONS
BIOLOGY: SCI-J152
MULTIPLE CHOICE QUESTIONS Answer ALL Questions
1.
Whichofthefollowingdiseasescouldbeexclusivelyassociatedwithariverbasin?
2.
A.Malaria
B.Syphilis
C.Onchocerciasis
D.Cholera
Inmammals,thefunctionofthesebaceousglandisto________________
3.
A.producesweat
B.secretesodium
C.secretewater
D.producesebum
Osteoporosisisadiseaseofthe___________________
A.lungs
B.skin
C.bones
D.eyes
4.
ThetypeofreproductionthatiscommontobothHydraandyeastis_______________
A.grafting
B.budding
C.conjugation
D.binaryfission
5.
Thedifferencebetweenthelargestandthesmallestdatavaluesisthe______________
A.variance
B.interquartilerange
C.range
D.coefficientofvariation
6.
Thefunctionofribosomesincellsis
A.proteinsynthesis
B.starchsynthesis
C.transportofmaterials
D.lipidstorage.
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7.
Whichstatementcorrectlydescribeshomologouschromosomes?
A.Theyareformedduringmeiosis
B.Theyareheldtogetherbycentromeres
C.Theyareidentical
D.Theycarrythesamegeneloci
8.
Whichoneofthefollowingisacorrectoutlineofthemaineventsinphotosynthesis?
A.Oxygenreactswithacarbohydratetoproducewaterandcarbon-dioxideinthepresence
oflight.
B.Lightjoincarbon-dioxidetoanacceptorcompoundwhichisthenreducedbyhydrogen
obtainedfromwater.
C.Lightsplitswaterandtheresultinghydroxylgroupcombineswithacompoundwhichhas
incorporatedcarbon-dioxide
D.Carbon-dioxidecombineswithanacceptorcompoundandthisisreducedbyhydrogen
splitfromwaterbylight.
9.
10.
11.
12.
Breathingmovementinmammalsisaccompaniedbyregularmovementofthediaphragm
andthe____________________
A.intercostalmuscles
B.vertebralcolumn
C.clavicle
D.pleuralcavity
Organismsthatrequireoxygentogrowarecalled___________________
A.psychrophilicorganisms
B.thermophilicorganisms
C.aerobes
D.hyperthermophiles.
Organismsthatretaintheblue/purplecolourintheircellwallingramstainingtechniqueare
_____________________
A.microaerophile
B.viablecells
C.grampositiveorganisms
D.gramnegativeorganisms.
WhichofthefollowingnitrogenousbaseisfoundinRNAbutnotinDNA?
A.Adenine
B.Thymine
C.Uracil
D.Guanine.
13.
Thestudyofgroupsoforganismsiscalled____________
A.Ecology
B.Autecology
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C.Gynecology
D.Synecology
14.
Geneticrearrangementbetweennonsisterchromatidsisknownas_____________
15.
A.crossover
B.synapsis
C.randomfertilization
D.character
Oneofthefollowingisnotatypeofdormancy.
16.
A.Induced
B.Innate
C.Enforced
D.Applied
TheterrestrialspeciesofclassGastropodapreventwaterlossbymeansof_______
A.Apiphragm.
B.Nephridia.
C.Radula.
D.Epiphragm.
17.
ThefirstformsoflifeonEarthwerethoughttobe____________
18.
A.single-celledplants.
B.prokaryotes
C.insects
D.largeanimalssuchasdinosaurs
Whichpolysaccharideisusuallyfoundinthecellwallsoffungi?
19.
20.
A.Starch
B.Glycogen
C.Chitin
D.Cellulose
Whatadaptationdoseedplantshaveinadditiontotheseedthatisnotfoundinseedless
plants?
A.Gametophytes
B.Vasculartissue
C.Pollen
D.Chlorophyll
ProkaryotesstainasGram-positiveorGramnegativebecauseofdifferencesinthe
____________
A.Cellwall.
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21.
C.Nucleus.
D.Chromosome.
Externalfertilizationoccursin______________typeofenvironment?
22.
A.Aquatic
B.Forested
C.Savanna
D.Steppe
Whatkindofecosystemareexoticspeciesespeciallythreateningto?
A.Deserts
B.Marineecosystems
C.Islands
D.Tropicalforests
23.
Eachneuronecontains_______________
24.
A.soma,dendritesandaxon
B.sensory,associationandmotor
C.cerebrum,cerebellumandhypothalamus
D.afferent,efferentandmixed
OneofthesestatementsisnottrueaboutBerryandDrupe.
A.Theybothhavethinepicarp
B.Theybothhavefleshysucculentmesocarp
C.Theirendocarpisedible
D.Theybothhaveseed
25.
AntibioticdiscoverywasdonebytheScottishbacteriologist__________
A.AlexanderPenicillius
B.AlexanderFleming
C.AlexandesFleming
D.AlexandesPenicillius
26.
27.
ThetypeofcelldivisionwhichformsthebasisofMendel’slawofsegregationis
_______________
A.Mitosis
B.Meiosis
C.Somatic
D.Synoptic
Archaebacteriaissimply____________________
A.Aprokaryoteswithoutcellwall
B.Aneukaryoteswithoutcellwall
C.Aprokaryotewithoutapeptidoglycancellwall
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D.Aneukaryoteswithoutapeptidoglycancellwall
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28.
Leucosoleniabelongstoclass_________________
A.Calcispongiae
B.Hexactinellida
C.Demospongiae
D.Porifera
29.
Apseudopodiathatisthreadlike,branchedandinterconnectedisknownas
___________________
A.Lobopodia B.Actinopodia C.Filopodia
D.Reticulopodia
30.
Photosyntheticmicrophyllsarefoundin________________
31.
A.DivisionPsilophyta
B.DivisionLycophyta
C.DivisionSphenophyta
D.DivisionPterophyta
Poliomyelitisisaninfectiousdiseasecausedby________________
32.
A.virus
B.protozoan
C.bacterium
D.fungus
Whichoftheseisatraceelement?
A.Iron
B.Copper
C.Calcium
D.Sulphur
33.
Whichofthesediseasescannotbepreventedbyimmunization?
A.Poliomyelitis
B.Tuberculosis
C.Cholera
D.Onchocerciasis
34.
Hydraremovesundigestedfoodby_________________
35.
A.passingitthroughtheanus
B.passingitthroughthemouth
C.meansofcontractilevacuole
D.digestingitthroughthebodysurface
WhichofthefollowingisINCORRECT?Theprothallusofafern_______
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36.
A.isaflattenedheartshapedstructure.
B.isgreenbecauseitscellscontainchloroplast.
C.isthedominantplant.
D.bearsthesexualorgans.
Thescienceoftaxonomyhastwobranchesnamely_____________and________________
A.Biologynamingandbiochemistry
B.NomenclatureandClassification
C.Botanyandsystematic
D.Microbiologyandsystematic
37.
38.
39.
40.
41.
Tocomplementbioticanalysisinmeasuringenvironmentalfactorsthefollowingarestudied
Except
A.Soil
B.Water
C.Topography
D.Geography
Theperiodbetweeninoculationofbacteriainculturemediumandthebeginningof
multiplicationisknownas________________
A.logphase B.lagphase
C.stationaryphase
D.declinephase
Smallproteinaceousinfectiousparticlesthatdonotcontainnucleicacidgenomethatcodes
fortheirprogenyare_______________
A.bacteria
B.viruses
C.HIV D.prion
Exampleofall-purposemediausedincultivationofbacteriabyabacteriologistis
___________
A.selenitcAagar
B.bloodagar C.nutrientagar
D.tryptonesoyagar
WhichofthefollowingisnotacharacteristicfeatureofthephylumCnidaria?
A.Polymorphism
B.Cephalisation
C.Bodyoftwo-germlayers
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D.Nematocysts
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42.
Whichofthefollowinggroupsofplantsarenotconsideredaslowerplants?
A.Pteridophytes
B.Bryophytes
C.Cryptogams
D.Spermatophytes
43.
Non-livingbodiesinthecellincludesoneofthese,_____________
44.
A.Starchgrains
B.Chloroplast
C.Ribosomes
D.Cellwall
Alternationofgenerationinplantsinvolveswhichofthefollowing?
45.
A.Processesintwosexualpathways
B.Processesinonesinglesexualpathway
C.Sporesdispersalalone
D.Processesinhomogamyalone
WhichoftheseisnotaformofrespirationinAmphibians?
46.
A.Cuteneous
B.Tubular
C.Pulmunary
D.Buccal-Pharyngeal
Thefactorthatleastaffectsfoodshortageinthesub-saharanAfricais_____________
A.flooding
B.pests
C.mixedcropping
D.drought
47.
Whichoneofthefollowingfactorsmaynotdirectlyaffectpopulationdensityoforganisms?
48.
A.Edaphic
B.Nutritional
C.Mortality
D.Emmigration
Oneofthemajorcausesoflaboratoryacquiredinfectionisinhalationof_________
A.air
B.water
C.particles
D.infectiousaerosol
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49.
Themajorcellofthespecificimmunesystemare_______________
A.bonemarrowcells
B.erythrocytes
C.lymphocytes
D.monocytes
50.
Thenormalmicrobacterofthestomachincludeallofthefollowingexcept:
A.Streptococcus
B.Staphylococcus
C.Lactobacillus
D.Diphtheriods
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BIOLOGYESSAYQUESTIONS ESSAYQUESTIONS:AnswerFOURQuestionsinall;OnefromeachCourse
TIME:2HRS
1.(a).State6differencesbetweensexualandasexualreproduction
(b).Writeshortnotesonany2ofthefollowing: i.
Haplonticlifecycle
ii.
Diplonticlifecycle
iii.
Haplodiplonticlifecycle
6marks
4marks
BIO001:GENBIOLOGY
2.(a).Definethefollowingterms
i.
Genotype
ii.
Phenotype
iii.
Hybrid
iv.
Dominantcharacter. (b).StateclearlyMendel’sfirstandsecondlawsofinheritance 4marks
2marks
(c).IfapurebreedingbrowncolouredratBBiscrossedwithapurebreedingWhiteratbb,
usingdiagramsonly,showthegenotypeoftheoffspringuptothesecondfilialgeneration.
4marks
BIO001:GENBIOLOGY
3.Describetheformationoftwomoleculesofpyruvateduringrespiration 10marks
BIO003:MICROBIOLOGY
4.(a).Definethefollowingterms
i.
AsepticTechnique
ii.
Antigens
iii.
Antibodies
iv.
Immunity
4marks
(b).List6rulesthatmustbeobservedforanyaseptictechnique 6marks
BIO003:MICROBIOLOGY
5.(a). Howdoeswaterinthesoilentertheroothairofaplant? 6marks
(b) Name the tissue that conducts water from the root to the stem and leaves in a
floweringPlant?
4marks
BIO002:BASICBOTANY
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6.(a).Statefivefunctionsoftestosterone 5marks
(b).Withaidofdiagramonly,describematurespermatozoon 5marks
BIO004:FUNDAMENTALSOFZOOLOGY
7.(a).Whatisatissue?
1mark
(b).Howareplanttissueformed 3marks
(c).Describethestructureandfunctionoftwovasculartissues 6marks
BIO002:BASICBOTANY
8.(a).Listany6characteristicsofthephylummullusca
6marks
(b).Give4economicimportanceofthesub-classpulmonata 4marks
BIO004:FUNDAMENTALSOFZOOLOGY
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