biology standard level paper 1 - ibdocuments.com past papers - year/2012 examination... ·...
TRANSCRIPT
![Page 1: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/1.jpg)
2212-6010 12 pages
M12/4/BIOLO/SPM/ENG/TZ1/XX
Thursday 17 May 2012 (afternoon)
BIOLOGYSTANDARD LEVELPAPER 1
INSTRUCTIONS TO CANDIDATES
• Do not open this examination paper until instructed to do so.• Answer all the questions.• For each question, choose the answer you consider to be the best and indicate your choice on
the answer sheet provided.• The maximum mark for this examination paper is [30 marks].
45 minutes
©International Baccalaureate Organization 2012
22126010
![Page 2: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/2.jpg)
2212-6010
–2– M12/4/BIOLO/SPM/ENG/TZ1/XX
1. Themeanheight for adultmen in theUnitedStates is 1.78mwith a standarddeviationof 8cm.Whichstatementistrue?
A. ThetallestmanintheUnitedStatesis1.86mtall.
B. 68%ofmenintheUnitedStatesarebetween1.74mand1.82mtall.
C. 68%ofmenintheUnitedStatesarebetween1.70mand1.86mtall.
D. 100%ofmenintheUnitedStatesarewithintwostandarddeviationsof1.78m.
2. Whichpropertymakesstemcellssuitablefortherapeuticuse?
A. Theycandividebymeiosistoformgametes.
B. Theycontainchemicalsthatcankillbacteria.
C. Theirchromosomesaresuitableforgenetransferandcloning.
D. Theycandifferentiateintospecializedcells.
3. Whichfeaturesarepresentinprokaryoticcells?
A. DNA,plasmamembraneandmitochondria
B. DNA,cellwallandpili
C. ribosomes,chloroplastsandcellwall
D. cytoplasm,ribosomesandroughendoplasmicreticulum
4. Whereinthecelldocondensationreactionsinvolvingaminoacidsoccur?
A. Nucleus
B. Golgiapparatus
C. Ribosomes
D. Lysosome
![Page 3: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/3.jpg)
2212-6010
–3–
Turn over
M12/4/BIOLO/SPM/ENG/TZ1/XX
5. Whichprocessispossibleduetothefluidityofcellmembranes?
A. Endocytosis
B. Osmosis
C. ATPproduction
D. Cellrecognition
6. InwhichstageofmitosisisthecelllabelledX?
X
A. Anaphase
B. Interphase
C. Metaphase
D. Prophase
7. Betweenwhichatomsdohydrogenbondsforminwater?
A. Oxygenandhydrogenatomsinthesamewatermolecule
B. Oxygenandhydrogenatomsindifferentwatermolecules
C. Hydrogenatomsinthesamewatermolecule
D. Oxygenatomsofdifferentwatermolecules
![Page 4: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/4.jpg)
2212-6010
–4– M12/4/BIOLO/SPM/ENG/TZ1/XX
8. Whichcarboncompoundproducedbylivingorganismsisinorganic?
A. DNA
B. Cellulose
C. Glucose
D. Carbondioxide
9. WhatoccursduringDNAreplication?
A. DNApolymeraseseparatesthetwoDNAstrands.
B. DNAmoleculescontainingnucleotidesfromtheoriginalmoleculeareproduced.
C. Adenineformsabasepairwitheitherthymineoruracil.
D. Newbasesattachtotheoriginalsugar-phosphatebackbone.
![Page 5: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/5.jpg)
2212-6010
–5–
Turn over
M12/4/BIOLO/SPM/ENG/TZ1/XX
10. Whichgraphshowstheeffectofincreasingthesubstrateconcentrationonenzymeactivity?
A. Enzymeactivity
B. Enzymeactivity
Substrateconcentration Substrateconcentration
C. Enzymeactivity
D. Enzymeactivity
Substrateconcentration Substrateconcentration
11. Whichchemicalisproducedduringbothaerobicandanaerobicrespirationinhumans?
A. Carbondioxide
B. Pyruvate
C. Water
D. Lactate
![Page 6: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/6.jpg)
2212-6010
–6– M12/4/BIOLO/SPM/ENG/TZ1/XX
12. Howisoxygenproducedduringphotosynthesis?
A. WatermoleculesaresplitwithenergyfromATP.
B. Watermoleculesaresplitwithenergyfromlight.
C. CarbondioxidemoleculesaresplitwithenergyfromATP.
D. Carbondioxidemoleculesaresplitwithenergyfromlight.
13. Thesequenceofthefirstsixaminoacidsofthenormalβhemoglobin(HbA)chainarelisted.
valine–histidine–leucine–threonine–proline–glutamicacid
Which sequence of amino acids could there be in the first six amino acids of the sickle-cellβhemoglobin(HbS)chain?
A. glutamicacid–histidine–leucine–threonine–proline–valine
B. valine–valine–histidine–leucine–threonine–proline
C. glutamicacid–histidine–leucine–threonine–proline–glutamicacid
D. valine–histidine–leucine–threonine–proline–valine
14. Ifthereare16chromosomesinacellthatisabouttodivide,whatwillbethenumberofchromosomesinadaughtercellafterdivisionbymitosisormeiosis?
Mitosis Meiosis
A. 16 16
B. 16 8
C. 8 16
D. 8 8
![Page 7: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/7.jpg)
2212-6010
–7–
Turn over
M12/4/BIOLO/SPM/ENG/TZ1/XX
Questions 15 and 16 refer to the following information.
Aman has hemophilia, a condition caused by a recessive sex-linkedallelecarriedontheXchromosome.
15. Whichofhisgrandparentsmustbeacarrierifnoneofthemhadthedisease?
A. Maternalgrandmother(hismother’smother)
B. Maternalgrandfather(hismother’sfather)
C. Paternalgrandmother(hisfather’smother)
D. Paternalgrandfather(hisfather’sfather)
16. Hiswifedoesnotcarrythehemophiliaallele.Whatwouldbeexpectedintheirchildren?
Sons Daughters
A. allnormal allcarriers
B. halfhemophiliac allcarriers
C. allnormal halfcarriers
D. halfhemophiliac allnormal
17. Whatmakesgenetransferbetweenspeciespossible?
A. Allspeciesusethesamegeneticcode.
B. Allspecieshavethesamegeneticmaterial.
C. Allspeciesproducethesamepolypeptides.
D. Allspeciestranscribegenesusingplasmids.
![Page 8: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/8.jpg)
2212-6010
–8– M12/4/BIOLO/SPM/ENG/TZ1/XX
18. Inapond,twospeciesoffishfeedoninsectsandworms.Theinsectsfeedonthegreenplantsthatliveinthewater.Whatconstitutesapopulationinthisecosystem?
A. Allthelivingorganisms
B. Alltheanimals
C. Allthefish
D. Allthefishofonespecies
19. Whatisrecycledinanecosystem?
A. Nitrogen,carbonandenergyareallrecycled.
B. Nitrogenandcarbonarerecycledbutnotenergy.
C. Nitrogenisrecycledbutnotcarbonorenergy.
D. Nitrogen,carbonandenergyarenotrecycled.
20. Inapopulationofrabbitsstudiedoveraperiodofsixmonths,itwasfoundthatnatalitywasgreaterthanmortalityandemigrationwasgreaterthanimmigration.Whatcanbeconcludedaboutthefinalpopulationofrabbits?
A. Itwillhaveincreased.
B. Itwillhavedecreased.
C. Itwillbeexactlythesame.
D. Thereisnotenoughinformationtomakeavalidconclusion.
21. Whatcharacteristicsdescribehomologousstructures?
A. Theyhavethesameancestraloriginbutmayhavedifferentfunctions.
B. Theyhavethesameancestraloriginandalwayshavethesamefunction.
C. Theyhavedifferentancestraloriginsandmayhavedifferentfunctions.
D. Theyhavedifferentancestraloriginsbutalwayshavethesamefunction.
![Page 9: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/9.jpg)
2212-6010
–9–
Turn over
M12/4/BIOLO/SPM/ENG/TZ1/XX
22. The Atlantic cod (Gadus callarias) is a fish which lays about 5000000 eggs in its lifetime.Onaverage,onlytwooftheseeggssurvivetobecomeadultcod.Howdoesthispromoteevolution?
A. Alloffspringaregeneticallyidentical,sobecomebetteradapted.
B. Layingmanyeggsprovidesfoodforotherspeciestosurviveandbecomebetteradapted.
C. Some young cod change to become adapted to the environment and survive and pass ontheirgenes.
D. Offspringwithfavourablevariationssurviveandpassontheirgenes.
23. Basedonbinomialnomenclature,whichtwospeciesaremostcloselyrelated?
I. Commonbarberry(Berberis vulgaris)
II. Canadianbunchberry(Cornus canadensis)
III. Smoothblackberry(Rubus canadensis)
IV. Canadianbarberry(Berberis canadensis)
A. IandIV
B. IIandIII
C. IIandIV
D. IIIandIV
![Page 10: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/10.jpg)
2212-6010
–10– M12/4/BIOLO/SPM/ENG/TZ1/XX
24. Thediagrambelowshowsthehumandigestivesystem.
Inwhichpartsofthedigestivesystemaremostwaterandglucoseabsorbed?
Water Glucose
A. II I
B. II III
C. III II
D. III III
![Page 11: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/11.jpg)
2212-6010
–11–
Turn over
M12/4/BIOLO/SPM/ENG/TZ1/XX
25. Whatistheconditionofthevalvesoftheheartwhentherightventricleiscontracting?
Atrio-ventricular valve Semilunar valve
A. open open
B. open closed
C. closed closed
D. closed open
26. WhateffectdoesHIVhaveontheimmunesystem?
A. Itpreventsleucocytesfromfightingbacteriabyphagocytosis.
B. Itcausesexcessiveproductionofleucocytesinbonemarrow.
C. Itdestroysantibodiesproducedbyleucocytes.
D. Itlowersthenumberofleucocytes,reducingantibodyproduction.
27. Whatisasimilaritybetweenarteriesandcapillaries?
A. Theybothhaveelastictissue.
B. Theybothhavesmoothmusclecells.
C. Neitherhascollagenfibresintheirwalls.
D. Neitherhasvalves.
28. Whatisacharacteristicofaxonsinmotorneurons?
A. Whenthereisarestingpotential,theoutsideoftheaxonisnegativerelativetotheinside.
B. Duringanactionpotential,Na+ionsdiffuseoutoftheaxon.
C. K+ionsdiffusingoutoftheaxonrepolarizesit.
D. Impulsesintheaxontraveltowardsthecellbody.
![Page 12: BIOLOGY STANDARD LEVEL PAPER 1 - ibdocuments.com PAST PAPERS - YEAR/2012 Examination... · 2212-6010 12 pages M12/4/BIOLO/SPM/ENG/TZ1/XX Thursday 17 May 2012 (afternoon) BIOLOGY STANDARD](https://reader030.vdocuments.site/reader030/viewer/2022021611/5e1e4d0dc413b972f7080480/html5/thumbnails/12.jpg)
2212-6010
–12– M12/4/BIOLO/SPM/ENG/TZ1/XX
29. Whichresponsetakesplacewhenbloodglucoselevelsarelow?
A. Glucagonisreleasedfromtheαcellsofthepancreaticislets.
B. Glucagonisreleasedfromtheβcellsofthepancreaticislets.
C. Insulinisreleasedfromtheαcellsofthepancreaticislets.
D. Insulinisreleasedfromtheβcellsofthepancreaticislets.
30. Duringthemenstrualcycle,whatoccursinresponsetoafallintheprogesteronelevel?
A. Growthoftheuteruslining
B. Growthofthefolliclesurroundingtheegg
C. Ovulation
D. Menstruation