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studyGuide Section2: Mitosis andCytokinesis In your textbook, read about the otagesofmitosis. Ior eachyatement belowwritelrueor false, 1. Thenuclear membrane disintegrates duringprophase. 2. Microtubulesmovechromatidsto the polesofthe cellduring anaphase. 3. Chromosomes reachthe polesof the cellduringmetaphase. 4. The cell'schromatincondenses into chromosomes duringprophase. 5. Thenuclearenvelope re-formsduringanaphase. 6. Chromosomes attachto spindlefibersand line up alongthe equatorof the cellduringmetaphase, Thenucleusreappears duringprophase. Cent olesmigrateto the polesofthe cellduring telophase, Chromatidsarepulledapartduringanaphase. 1 0 . Thefirst stageof mitosisis telophase. 11. Thechromosomes or unwind duringtelophase. decondense a g 12. Theshorteststageof mitosisis metaphase. I l Labelthediagramdthe stages ofttitosisusinglifies13-16,Usethese.hoices: anaphase 13 . metaphase 14. prophase t $ telophase g' I 15. 3 I t 3 18. 17 . 19. Label the diagramsaboveusinglines17-20.Usethesechoices: cenlrioles centfomete 126 celular Reproduction CHAPTER I sister chromatido spindlefibers Unit 2 CHAPTER 9 Section QuickCheck Section2: MitosisandCytokinesis After readittgthesectionifl lour textbook,respondto eachstateftent. l. Recountthe majoreventsthat happendqringprophase, 2. Describe thestructureofchromosomes duringprophase. 3. Sumnrrize howcytokinesis occursin plaDtcells. r 4. Contrastthe spindleapparitusof an animalcellwith that of a plant cell, a proposeonewordor a shortphrase 5. Devis€a lay to lemembereachstageofmitosis. thatdescribes eachstage andalsostartswiththesameletterasthenameof that stage,for example,telophase*two niclei s I 6 c F L e) .E E' 134 Cellular Reprodudion CHAPTER 9 unit 2 Section QuickCheck Section3: Cell lation Aftet rcodingthesectionin your textboolgrespondto eaxhstatetuett, l. Relateapoptosis to cancer. 2"Explain howcancerous cellgrowthdiffersfromnormalcellgrowth. 3. ldentityth€prote-in andenzpnecomplexthar is imporrantin controllinrthecell cycreandrnreeot theproce6ses it controls, J 4, Determlne thesignificance ofstemcells. .d 6 5, Deduce whatwouldhappen iftherewereno spindlecheckooints, E ? ,E gI ,q CHAPTER 9 Cellulaf Reproduction 135 Section Section1: CellularGrowth QuickCheck Aftet readifigthesectionin your textbook,rcsponilto eachstateftent, 1. Detinemitosii. 2. Summarize thestages ofinterphase. between chlomatinandchromosomes. 3, Claritythedifference I between mitosis.ndcytokinesis, 4. Dlstlnguish c F I E E richardiiarc abott 100lm i\ 5. Theunicellularsporesof the fern Ceratopteris Calculate thesurface-area-to-volume ratioofa cubewhosesidesare diameter. pm the surface-area-to-volume ratioof thefeln 100 in lengthto approximate soorecell.Showvour work. ; ; fi ! 5 .|33 CHAPfER 9 Cellular Reproduction I Name J Class StudyGuide CHAPIER 9 Section1: Cellular Growth In your textbook, tead about cell 6izelimitations, Listteo altenatieefufilresfor cellswhentheyrcachtheir sizelimitatiorls. 1. 2. In your textbook,readaboutthe cell cycle, Drawthecellcycleitr thespace below.Includethefollowinglabels: cllokinesis,G,,G, interyhase,mitosis,S. t t 3 a Matchthedefinitiotin ColumnA with thetermin ColumnB. I Colqmn A Column B 4, stagein whichthe celldividesinto iwd daughtercellswith identicalnuclei t I A. Sphase B. cytokinesis substage dfinterphaseimmediatelyaftera celldivides G, substage of interyhaseilr whichthe cellcopiesits DNA in preparationfor celldivision 6 t D. G, stagein whichthe cell'snuclearmaterialdividesandseparates 8 . main stagein whichthe cellgroJvs, carriesout normalfunctions, andduplicates its DNA interphase mitosis 9. substagein which the cell preparesfor nucleardMsion and a proteid that makesmicrotubles for cell division is synthesized CHAPTER 9 Cellular Repfoducton125 I I ,t Stuily Guiile, Section2; MitosisandCytokinesis continued In your textbools read about cftokinesis. 7 G Animalcell Plantcells Referto thediagtamsabove.Respotlilto each stotemett, 21. Discuss the role of microfilamentsin cytokinesis. 22.Summarize celldivisionin prokaryotes. r 'c 3 l E D-mwthefonnation-of,twogeneticallyidenical ce-lkitl platlr in thespacebelow,Include the Jouowinglabeb:cellplate,identicaldaughterceu6,newcellwall_ E te l E E 5 3 CHAPTER 9 Cellular Reproduction t27