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M08/4/BIOLO/SPM/ENG/TZ2/XX 22086016 Biology Standard level authorship 1 Wednesday 14 May 2008 (afternoon) 45 minutes instruction manual TO CANDIDATES Do not open this examination paper until instructed to do so. respond all the questions. For for to each one one question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided. 2208-6016 12 pages ©International Baccalaureate governing 2008 2 1. M08/4/BIOLO/SPM/ENG/TZ2/XX compassionatespermandeggsbothconsistofsinglecells. Whatisadifferencebetweenthem? A. B. C. D. Sperm domorechromosomesthaneggs. egghavemorechromosomesthansperm. Spermhavea largesurfaceareatovolumeproportionthaneggs. Eggshavealargersurfaceareatovolumeratiothansperm. 2. AstudentobservesanddrawsanAmoeba,usingthehighpower electron lensofamicroscope.The diameter ofthedrawingis100mm.TheactualdiameteroftheAmoebais100 µ m. What is the magnification ofthedrawing? A. B. C. D. 0.001 100 four hundred 1000 3. Whichtypesofmetabolicactivityarefoundinprokaryotes? A. B. C. D. I. II. upheaval Nitrogen fixation III.

Photosynthesis None Ionly IandIIonly I,IIandIII 2208-6016  4. Whatisadifferencebetween graftandanimalcells? A. B. C. D. M08/4/BIOLO/SPM/ENG/TZ2/XX fleshly cells burst when they take in excess water by osmosis whereas embed cells do not. adjustcellsstorecellulosewhereasanimalcellsstorestarch. Animalcellshaveribosomeswhereasplantcellsdonot. Plantcellshaveacell beleaguerwhereasanimalcellshaveacellmembrane. 5. Whatensuresthatmitosisproducestwogeneticallyidenticalnucle i? A. B. C. D. One of each of the twenty-thr! ee types of chromosome is pulled to each celestial pole of the cell by spindlemicrotubules. Halfofthechromosomesarepulledtoeachcentriolebymesosomes. Identical...If you want to take down a full essay, effect it on our website: BestEssayCheap.com

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