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GCE MAY 2007 : (A2 2) Reproduction, Genetics and Taxonomic Diver (Irish Medium)

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Uimhir L rionaid 71 Uimhir Iarrth ra ADVANCED General Certificate of Education 2007 Bitheola ocht Aonad Meas naithe A2 2 ag meas n Mod l 5: At irgeadh, G ineola ocht agus ags lacht Thacsanoma och [A2B21] D M IRT 22 BEALTAINE, IARN IN AM 1 uair 30 n im ad. TREOIR D IARRTH IR Scr obh d Uimhir L rionaid agus d Uimhir Iarrth ra sna sp sanna chuige sin ag barr an leathanaigh seo. Scr obh do fhreagra sna sp sanna chuige sin sa cheistph ip ar seo. Freagair gach ceann de na hocht gceist. EOLAS D IARRTH IR Is 75 an marc ioml n don ph ip ar seo. T 60 marc ag dul do Roinn A. T 15 mharc ag dul do Roinn B. Ba ch ir duit tuairim is 20 n im ad a chaitheamh ar Roinn B. Glactar leis go bhfreagr idh t Roinn B i bpr s lean nach. Meas n far caighde n na cumars ide scr ofa i Roinn B. L ir onn figi ir idir l ib n ar thaobh na l imhe deise de leathanaigh na marcanna at ag dul do gach ceist n do gach cuid de cheist. Don Scr daitheoir amh in Uimhir Ceiste 1 2 3 4 5 6 7 8 Marc Ioml n A2B2S7 2826 Marcanna Roinn A Scr daitheoir Amh in Marcanna 1 Athmharc Taispe ntar org naigh dhifri la sa t bla seo th os. Tugtar l on na gcr mas m at i n icl is na gceall acu. Org nach L on na gcr mas m B 60 C camar 14 Gairleog 32 Gaim itif t Dh chasach 30 ll Bramley 51 (a) Faigh l on na gcr mas m a bheadh i ngach ceann acu seo th os: ubh n bh _________________ n icl as fead n pailine ch camar _________________ cill inspeirme ghairleog _________________ sp r den d chasach _________________ [4] (b) Is polapl ideach an t- ll Bramley. An fhaisn is sa t bla in s id agat, sainaithin an fhianaise at air seo agus m nigh an f th a mbeadh an t- ll Bramley steiri il. _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [2] A2B2S7 2826 2 [Turn over 2 Sa l ar id th os l ir tear trasghearradh tr d an h fe d fhungas n mh sc n de r ir mar a fheictear tr mhicreasc p leictreonach . Scr daitheoir Amh in Marcanna Athmharc cillbhalla gr inn n glicigine (a) Luaigh dh ph osa fianaise n l ar id lena chur in i l gur org naigh eocar tacha iad na baill den r ocht Fungais. 1. _______________________________________________________ 2. _____________________________________________________ [2] (b) Ag tagairt don l ar id fungais thuas, cuir s os ar sheicheamh na n-imeachta n uair a th irgtear na heins m go dt go mb onn siad in s id sa d le . _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [3] (c) C n fheidhm, dar leat, a bheadh leis an ghr inn n glicigine at lip adaithe sa l ar id thuas? _______________________________________________________ [1] (d) Cad an ceimice n at i gcillbhalla fungais? _______________________________________________________ [1] A2B2S7 2826 [Tiontaigh an [Turn over leathanach Sa l ar id th os taispe ntar na c imeanna i saolr Funaria, planda caonaigh. Scr daitheoir Amh in Marcanna strucht ir at irgeacha planda caonach Funaria Athmharc strucht ir at irgeacha duilleoga faoi eagar b seach feist onn rios idigh an planda caonaigh gearradh toirchi caps l forbra onn siog t ina sp raif t (diopl ideach) ag f s ar ghaim itif t scaipeadh sp r cealla simpl planda de ghas agus dhuilleog p acann sp ir le planda caonaigh a dh anamh (a) An fhaisn is sa l ar id in s id agat, cuir s os ar na himeachta a fh gann go dtarla onn toirchi in Funaria. _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [3] A2B2S7 2826 [Turn over (b) Sa l ar id chomh maith t gearradh tr ghas an chaonaigh. Sainaithin difear amh in idir an ghearradh seo agus an gearradh tr ghas de phlanda bl thanna. Scr daitheoir Amh in Marcanna Athmharc _________________________________________________________ _______________________________________________________ [1] (c) Taispe ntar caps l caonaigh sa l ar id. Cad an strucht r i saolr na raithn a fhreagra onn de seo? _______________________________________________________ [1] (d) Luaigh d igh amh in a bhfuil saolr an chaonaigh cos il le saolr na raithn agus d igh amh in a bhfuil s difri il l i. Cos lacht _____________________________________________ _____________________________________________________ Difr ocht ______________________________________________ ___________________________________________________ [2] A2B2S7 2826 [Tiontaigh an [Turn over leathanach (a) Luaigh an difear idir na t arma g initeacha seo a leanas. Scr daitheoir Amh in Marcanna Athmharc (i) G in agus aill il. _____________________________________________________ _____________________________________________________ _____________________________________________________ ___________________________________________________ [2] (ii) Ceannas agus epistasis. _____________________________________________________ _____________________________________________________ _____________________________________________________ ___________________________________________________ [2] (b) I bplanda scuaise, is an t-imoibri idir dh gh in, W/w agus G/g a th op lann dath an toraidh. B onn gn omh na g ine G/g chosc ag an aill il W sa d igh go dt irgtear toradh dar dath b n. Nuair is ww an g init opa b onn an gh in G/g l iri , agus is an aill il cheannasach G a th op lann toradh dar dath bu agus l ir tear an aill il g go c laitheach mar ghlas. Cros ladh dh phlanda scuaise dar g init opa WwGg WwGg Faigh na comhr ireanna a bheadh, dar leat, sa sliocht a th irgtear maidir le g init opa agus feinit opa araon. Tarraing l ar id g initeach sa sp s a leanann le do chuid oibre a thaispe int. A2B2S7 2826 [Turn over Scr daitheoir Amh in Marcanna Athmharc [4] A2B2S7 2826 77 [Tiontaigh an [Turn over leathanach (a) Sna graif seo th os l ir tear an ifeacht a bh onn ag dh chine l dhifri la de roghn (A agus B) ar mhinic ocht tr ithe taobh istigh de phobal. I ngach ceann den d ch s, t minic ochta na tr ithe ag an t s l iri sa ghraf ag an bharr, agus sa ghraf ag an bhun l ir tear an toradh a bh ar an phr iseas roghnaithe. Minic ocht B Minic ocht Minic ocht Minic ocht A Tr ith Tr ith Scr daitheoir Amh in Marcanna Athmharc (i) C acu ceann den d chine l roghnaithe, A n B, a l ir onn roghn cobhsaitheach? Luaigh f th le do fhreagra. _____________________________________________________ _____________________________________________________ ___________________________________________________ [2] (ii) C acu ceann den d chine l roghnaithe, A n B, is f idir go dtarl idh athr abhl ideach sa phobal d bharr? Cad a thugtar ar an chine l seo de roghn ? _____________________________________________________ ___________________________________________________ [2] A2B2S7 2826 [Turn over (b) Cuir s os ar an phr iseas de speiceas allapatrach. Scr daitheoir Amh in Marcanna Athmharc _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [4] A2B2S7 2826 [Tiontaigh an [Turn over leathanach An galar Tay Sachs, is neamhord annamh g initeach i l rch ras n ar g daoine. Is is c is leis n an eins m hexosaminidase A (Hex-A) a bheith in easnamh. Mura mb onn Hex-A ann, b onn an lipid GM2 ganglioside ag carnadh go m normalach i gcealla, i n arcealla na hinchinne go h irithe. An carnadh lean nach seo, d antar dochar forch imnitheach do na n archealla d bharr agus faigheann an p iste b s go luath ina ige. Scr daitheoir Amh in Marcanna Athmharc (a) An galar Tay Sachs, b onn s rial ag aill il at uaths mach agus c laitheach sa d igh nach mb onn an riocht seo ag iompr ir (heitrisiog t). M nigh an f th a mbeadh iompr ir normalach i dtaca le meitibileacht lipide de. _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [2] (b) Is iad teaghlaigh Ghi dacha Ashkenazi (de shliocht l r agus oirthear na hEorpa) is m a bh onn buailte leis an ghalar Tay Sachs. Sa l ar id seo th os taispe ntar ginealach den d igh a bhfaightear an galar le hoidhreacht i dteaghlach. Eochair: 2 1 fireannach normalach baineannach normalach 3 4 5 6 fireannach at buailte leis baineannach at buaile leis 7 8 9 10 (i) An fhaisn is thuas in s id agat, luaigh dh rud a thugann le fios go bhfuil an aill il don ghalar Tay Sachs c laitheach. 1.____________________________________________________ _____________________________________________________ 2.____________________________________________________ ___________________________________________________ [2] A2B2S7 2826 10 [Turn over (ii) An fhaisn is thuas in s id agat, m nigh an d igh a nd anf amach nach bhfuil an aill il don ghalar Tay Sachs suite ar an X-cr mas m. Scr daitheoir Amh in Marcanna Athmharc _____________________________________________________ ___________________________________________________ [1] (c) Maidir leis an phobal Ghi dach Ashkenazi i Meirice , b onn galar Tay Sachs l iri ag 4 as 10 000 breith. Tuigtear go bhfuil an pobal i gcothroma ocht Hardy Weinberg. (i) Faigh an mhinic ocht choibhneasta don aill il Tay Sachs agus don aill il normalach sa phobal. (Taispe in do chuid oibre sa sp s th os.) An mhinic ocht choibhneasta don aill il Tay Sachs ____________ An mhinic ocht choibhneasta don aill il normalach __________ [3] (ii) Faigh l on na n-iompr ir i bpobal de 10 000. (Taispe in do chuid oibre sa sp s th os.) L on na n-iompr ir sa phobal ___________________________ [1] (iii) N fh adfa glacadh leis go bhfuil an pobal i gcothroma ocht Hardy Weinberg i dtaca leis an aill il Tay Sachs de. M nigh cad chuige. _____________________________________________________ ___________________________________________________ [1] (d) T t st il ar f il chun an m id den eins m Hex-A san fhuil a thomhas. Iompr ir Tay Sachs, t tuairim is 60% de na leibh il eins me at ag neamh-iompr ir (homaisigeach normalach) acu. Comhairleoir g initeacha, m nigh an d igh a gcuirfeadh siad comhairle ar l n ineacha maidir le tortha t st la le go mbeidh a fhios acu c acu at p ist i mbaol an ghalair n nach bhfuil. _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [2] A2B2S7 2826 11 [Tiontaigh an [Turn over leathanach 7 Leithph ist na Nua-Sh alainne (Arthurdendyus triangulates), is creach ir ionrach cuiteog at fl irseach anois i dTuaisceart ireann, i ndiaidh gur th ngthas uirthi ar dt s in 1963 i ngaird n i mB al Feirste. Is d cha go bhfuil 3 phr omhthoisc i gceist agus lonn f in i dTuaisceart ireann: cuiteoga, arb iad an chuid is m d aiste bia, a bheith ann, raon teochta ithreach nach dt ann thar luachanna irithe agus mionaer id at a bheag n a mh r bogthais n tais. Tuigtear go raibh ifeacht di ltach ag an leithph ist ar phobail na gcuiteog. Scr daitheoir Amh in Marcanna Athmharc (a) Baineann leithph isteanna leis an fh leam Platyhelminthes agus baineann cuiteoga leis an fh leam Annelida. (i) Sainaithin d igh amh in a bhfuil platyhelminths agus annelida cos il lena ch ile maidir le strucht r. _____________________________________________________ ___________________________________________________ [1] (ii) Sainaithin dh igh a bhfuil platyhelminths agus annelida difri il lena ch ile maidir le strucht r. 1.____________________________________________________ _____________________________________________________ 2.____________________________________________________ _____________________________________________________ 3.____________________________________________________ ___________________________________________________ [3] (b) N thig le leithph isteanna ach timpeallacht at bogthais n tais a itri . Cad chuige, dar leat? _________________________________________________________ _______________________________________________________ [1] (c) Rinneadh fiosr saotharlainne ar na h ifeachta a bheadh ag teochta arda agus ag teochta sle ar mharthanas leithph ist na Nua-Sh alainne. Nochtadh leithph isteanna do theochta difri la sa raon 2 C go 23 C thar thr imhse de thuairim is 3 seachtaine agus tomhaiseadh an r ta b smhaireachta. Taispe ntar na cuair b smhaireachta sa ghraf thall. A2B2S7 2826 12 [Turn over 100 Scr daitheoir Amh in Marcanna 90 2 C 1 C 0 C 8 C 18 C 22 C 23 C 80 B smhaireachta % Athmharc 70 60 50 40 30 20 10 0 0 2 4 6 8 10 12 14 Fad an nochta/laethanta 16 18 20 22 Cad iad na concl id is f idir a dh anamh faoin ifeacht a bh onn ag teocht ar mharthanas leithph ist na Nua-Sh alainne? Cad an ifeacht a bheadh aige seo, dar leat, ar a leathadh ar fud Thuaisceart ireann agus cad mar a d fh adfadh s iteanna eile san Eoraip a choil ni ? _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [4] A2B2S7 2826 1 [Tiontaigh an [Turn over leathanach (d) An hipit is bh ifeacht di ltach ar phobail cuiteog ag leithph isteanna, cuir s os ar an d igh a gcuirfe fiosr iceola och le ch ile chun a th st il. Scr daitheoir Amh in Marcanna Athmharc _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [3] A2B2S7 2826 1 [Turn over LEATHANACH B N (Leanann na ceisteanna ar an ch ad leathanach eile) A2B2S7 2826 1 [Tiontaigh an leathanach Roinn B Scr daitheoir Amh in Marcanna Athmharc Sa roinn seo t thar ag s il leis go dtabharfaidh t do fhreagra i bpr s lean nach, le l ar id mar thaca ocht leis san it ar cu sin. Cuirtear i gcuimhne duit go bhfuil suas le dh mharc sa cheist seo ag dul do chaighde n na cumars ide scr ofa. [2] Breac cuntas ar mhicriomad (saothr ch n f och in phlanda) agus m nigh: (a) na teicn ochta at i gceist, ar a n- ir tear roghn na bhf och n at le hiomad , na d la steiri la gcaomhn , na cothaithigh a bh onn in s id sa mhe n saothr ch in agus rialaitheoir f is phlanda n- s id; [7] (b) na bunt ist agus na fadhbanna a bhaineann le saothr ch n f och in a s id chun planda a th irgeadh. [6] ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ A2B2S7 2826 1 [Turn over 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____________________________________________________________ ____________________________________________________________ ____________________________________________________________ ____________________________________________________________ A2B2S7 2826 21 [Turn over SEO DEIREADH AN SCR DPH IP IR A2B2S7 2826 22 [Turn over Cuireadh isteach ar chead chun an t- bhar c ipchirt uile a at irgeadh. I gc sanna irithe is f idir n r irigh le CCEA teagmh il a dh anamh le h in ir c ipchirt agus beidh s s sta na hadmh lacha sin a f gadh ar l r a chur ina gceart amach anseo ach a chur ar an eolas.

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Additional Info : Gce Biology May 2007 Assessment Unit A2 2 - Module 5: Reproduction, Genetics and Taxonomic Diversity(Irish Medium)
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