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4551/ Section A Bahagian A [60 marks] [60 markah] Answer all question in this section. Jawab semua soalan dalam bahagian ini. 1. Diagram 1.1 shows the four levels of cell organisation in human. Rajah 1.1 menunjukkan empat aras organisasi sel dalam manusia. level 3 aras 3 Level Aras 4 Digestion System Sistem pencernaan Cell sel process X proses X Diagram 1.1 Rajah 1.1 (a) (i) Name the level in the cell organisation in humans Namakan aras dalam organisasi sel dalam manusia. [1 marks] [1 markah] 1 (a)(i) 1

3 4551/ (ii) The cell undergo process X to become specific cells that perform a specific function. Name the process X. Sel mengalami proses X untuk menjadi sel khusus yang menjalankan fungsi yang khusus.namakan proses X.... [1 mark] [1 markah] 1 (a)(ii) 1 (b) State the two others examples of level 3 in cell organisation that involved in the human digestion system. Nyatakan dua contoh lain bagi aras 3 dalam organisasi sel yang terlibat dengan sistem pencernaan manusia.... [ marks] [ markah] 1 (b) c) Describe what happen to the individual that take the high protein in daily diet if the pancreas failed to function. Terangkan apa yang berlaku kepada individu yang mengambil kandungan protein yang tinggi dalam diet hariannya jika pankreas gagal berfungsi.......... [3 marks] [3 markah] 1 (c) 3

4 4551/ (d)(i) Pancreas is one of the endocrine gland that involved in the regulation of the glucose level in human blood.explain how pancreas reacts when the indvidual take more carbohydrate during breakfast. Pancreas ialah salah satu kalenjar endokrin yang terlibat dengan mengawalatur aras glukosa dalam darah manusia.terangkan bagaimana pankreas bertindak apabila seorang individu mengambil karbohidrat yang berlebihan semasa sarapan pagi............. 1(d)(i) 3 [3 marks] [3 markah] (ii) A pregnant women found her urine contain sugar when tested with benedict solution.. Wanita hamil mendapati air kencingnya mengandungi gula apabila diuji dengan larutan benedict. State the health problem faced by the pregnant women. Nyatakan masalah kesihatan yang dihadapi oleh wanita hamil itu. 1(d)(ii) 1.... [1 marks] [1 markah] (iii) Suggest one ways how to overcome the health problem at d(ii). Cadangkan satu cara bagaimana untuk mengatasi masalah kesihatan pada d(ii).... [1 marks] [1 markah] 1(d)(iii) 1 Total A1 1

5 4551/. Diagram.1 shows a structure of joint in human knee. Rajah.1 menunjukkan satu struktur sendi dalam lutut manusia femur tulang peha X fluid Cecair X joint capsule kapsul sendi Y tissue tisu Y Diagram.1 Rajah.1 (a) Name the X fluid and Y tissue. Namakan cecair X dan tisu Y X :... (a) Y :... [ marks] [ markah]

6 4551/ (b) Draw an arrow ( ) to match tissue Y to its function. Lukis satu anak panah ( ) untuk memadankan tisu T kepada fungsinya. Tissue Tisu Function Fungsi Mechanical support for knee. Memberikan sokongan mekanikal pada lutut. Y Acts as a lubricant which reduces friction between the ends of the bones. Bertindak sebagai pelincir yang boleh mengurangkan geseran antara dua tulang. Acts as cushions the joint dan absorbs shock. Bertindak sebagai kusyen pada sendi dan menyerap gegaran. (b) 1 [1 mark] [1 markah] (c) The joint capsule is a joint enclosure, strengthened with ligament. State the characteristic and importance of ligament? Sendi kapsul merupakan sendi yang diselaputi dan diperkuatkan oleh ligamen. Nyatakan ciri dan kepentingan ligamen.......... (c) [ marks] [ markah]

7 4551/ (d) Diagram. shows three type of joints: X, Y and Z in human skeleton. Rajah. menunjukkan tiga jenis sendi:x,y dan Z di dalam rangka manusia. X Y Z Diagram. Rajah. Explain ONE similarity and TWO differences of each joint. Terangkan SATU persamaan dan DUA perbezaan bagi setiap sendi. Similarity Persamaan:...... Differences Perbezaan:............ [3 marks] [3 markah] (d) 3

e) 8 4551/ before sebelum after selepas Diagram.3 Diagram.4 Rajah.3 Rajah.4 Diagram.3 shows the knee of Mr. Sam who suffered osteoathritis. He went to the hospital to relieve the pain. An Orthopaedic replace the damaged joints with artificial one made of plastic or metal as the diagram in.4. Explain the causes of osteoathritis. Suggest the ways to overcome this skeletal disease. Rajah.3 menunjukkan lutut En. Sam yang mengalami osteoathritis. Dia telah pergi ke hospital bagi mengurangkan kesakitannya.pakar Ortopedik menggantikan sendi yang rosak dengan sendi palsu diperbuat daripada plastik atau besi seperti dalam rajah.4. Terangkan punca-punca osteoathritis. Cadangkan cara-cara mengatasi masalah penyakit ini................ [4 marks] [4 markah] (e) 4 Total A 1

9 4551/ 3. Diagram 3.1 shows the process in producing a lamb. One parent is a black faced sheep and the other parent is a white-faced sheep. Rajah 3.1 menunjukkan proses penghasilan anak biri-biri. Satu induk ialah biri-biri muka hitam dan satu lagi induk ialah biri-biri muka putih. Black- faced sheep/ Biri-biri muka hitam White- faced sheep/ Biri-biri muka putih Egg / Telur Electricity / Elektrik Cell R/ Sel R Nucleus / Nukleus Process X / Proses X Process Y / Proses Y Implant embryo / Penempelan embrio Embryo / Embrio Produces menghasilkan Lamb/ Anak biri-biri Sheep Z / Biri-biri Z Diagram 3.1 Rajah 3.1

10 4551/ (a) Name the type of reproduction shown in Diagram 3.1. Namakan jenis pembiakan yang di tunjukkan dalam Rajah 3.1.... [1 mark] [1 markah] (b) The white faced sheep parent cell has 4 chromosomes in it s somatic cell. The black faced sheep parent cell has 44 chromosomes in it s somatic cell. Sel induk biri-biri muka putih mempunyai 4 kromosom dalam sel somanya. Sel induk biri-biri muka hitam mempunyai 44 kromosom dalam sel somanya. 3 (a) 1 What is the number of chromosomes in the Apakah bilangan kromosom di dalam (i) Egg cell / Sel telur... (ii) Embryo cells/ Sel embrio [1 mark] [1 markah]... (c) (i) What is the trait of the cloned lamb? Apakah trait anak biri-biri yang dihasilkan? (ii) Explain your answer in (d)(i). Terangkan jawapan anda di d)(i) [1 mark] [1 markah] [1 mark] [1 markah] [ marks] [ markah] 3 (b)(i) 1 3(b)(ii) 1 3 (c)(i) 1 3 (c)(ii)

11 4551/ In one incident, a farm that was raising cloned sheep, had its sheep population of 50 000 all wiped out within a week due to a viral infection. Dalam satu kejadian di sebuah ladang yang membela biri-biri yang diklonkan, kesemua populasi biri-biri sebanyak 50 000 telah mati dalam masa seminggu akibat jangkitan virus. (d) Explain why the loss happened so rapidly. Terangkan mengapa kematian berlaku dengan begitu pantas. [ mark] [ markah] 3 (d) (e) Mutation is one of the factors that cause variation. Diagram 3. shows two types of chromosomal mutation. Mutasi merupakan salah satu faktor yang menyebabkan variasi. Rajah 3. menunjukkan dua jenis mutasi kromosom. Diagram 3. Rajah 3.

1 4551/ (i) Name a change in the structure of the chromosomes at S and T respectively. Namakan perubahan yang berlaku pada struktur kromosom pada S dan T. S:... 3 (e)(i) T: [ mark] [ markah] (ii) Explain the cause that make a change at S and T Terangkan sebab berlakunya perubahan yang berlaku pada S dan T [ mark] [ markah] 3 (e)(ii) Total A3 1

13 4551/ 4. A student carried out an experiment to study the growth and life cycle of a rat and a grasshopper. The growth curves for both organisms are shown in Diagram 4.1 and diagram 4.. Seorang pelajar menjalankan satu eksperimen untuk mengkaji pertumbuhan dan kitar hidup seekor tikus dan seekor belalang. Lengkung pertumbuhan untuk kedua-dua organisma itu ditunjukkan seperti dalam rajah 4.1 dan 4. Phase 1 Fasa 1 Phase Fasa Diagram 4. Rajah 4.

14 4551/ (a) State the differences of the growth curve between both organisms. Nyatakan perbezaan lengkung pertumbuhan bagi kedua-dua organisma tersebut................ [ marks] [ markah] (b) Based on Diagram 4.1, explain the growth rate of rat in phase. Berdasarkan Rajah 4.1, terangkan kadar pertumbuhan tikus dalam fasa.... [ marks] [ markah] 4 (a) 4 (b) (c) (i) Explain why there is no change in the body length during X as shown in Diagram 4.. Terangkan mengapa tiada perubahan bagi panjang badan semasa X seperti yang ditunjukkan dalam Rajah 4..... [ marks] [ markah] (ii) Explain the growth spurt that take place at the end of X. Terangkan pertumbuhan mendadak yang berlaku pada penghujung X 4 (c)(i) 4 (c)(ii)

15 4551/ [ marks] [ markah] (d) Secondary growth occurs in dicotyledonous plants and small number of monocotyledonous plants such as Aloe sp., Agave sp. and Dracaena sp. Diagram 4.3 shows a secondary growth in a monocotyledonous stem. Pertumbuhan sekunder berlaku dalam tumbuhan dikotiledon dan sebahagian kecil tumbuhan monokotiledon seperti Aloe sp., Agave sp. dan Dracaena sp. Rajah 4.3 menunjukkan pertumbuhan sekunder pada batang monokotiledon. Primary vascular bundle Berkas vaskular primer Cambium Kambium Epidermis Epidermis Secondary vascular bundle Berkas vaskular sekunder Primary vascular bundle Berkas vaskular primer Cambium Kambium Diagram 4.3 Rajah 4.3 (i) Name the tissues involved in secondary growth Namakan tisu yang terlibat dalam pertumbuhan sekunder... [1 mark] [1 markah] 4 (d)(i) 1

16 4551/ (ii) Explain why small number of monocotyledonous plants undergo secondary growth. Terangkan kenapa sebahagian kecil tumbuhan monokotiledon mengalami pertumbuhan sekunder..... [3 marks] [3 markah] 4 (d)(ii) 3 Total A4 1

17 4551/ 5. Diagram 5.1 shows the schematic diagram of gametogenesis process in human. Rajah 5.1 menunjukkan rajah skema proses gametogenesis pada manusia. process A proses A process B proses B Diagram 5.1 Rajah 5.1

18 4551/ (a) Name the process in diagram 5.1 Namakan proses dalam rajah 5.1 i) Process A/ Proses A :. 5 (a) ii) Process B / Proses B :. [ marks] [ markah] (b) State two differences between process A and process B. Nyatakan dua perbezaan antara proses A dan proses B..... 5 (b) [ marks] [ markah]

19 4551/ Diagram 5. show the structures that involved in the menstrual cycle. Rajah 5. menunjukan struktur-struktur yang terlibat dalam kitar haid. Gland X kelenjar X Z Hormone Y Hormon Y W Diagram 5. Rajah 5. (c) Based on diagram 5.,name hormone Y that secreted by gland X and state its function. Berdasarkan rajah 5., namakan hormon Y yang dirembeskan oleh kelenjar X dan nyatakan fungsinya. Hormone Y /hormon Y : 5 (c) Function/ fungsi :...... [ marks/[ markah]

0 4551/ (d) Explain what happened to the pregnant women if the structure W failed to function. Terangkan apa yang berlaku kepada wanita hamil jika struktur W gagal berfungsi............ [3 marks] [3 markah] (e)the married women found that structure Z is blocked and she cannot get pregnant Explain the technique that can be apply to overcome the problem above. Seorang wanita yang berkahwin mendapati struktur Z telah tersumbat dan beliau tidak boleh hamil.terangkan teknik yang boleh digunakan untuk mengatasi masalah ini. 5 (d) 3....... [3 marks] [3 markah] 5 (e) 3 Total A5 1

1 4551/ Section B Bahagian B [40 marks] [40 markah] Answer any two question from this section. Jawab mana-mana dua soalan daripada bahagin ini. 6. (a) (i) After absorption of nutrients in the small intestine, the undigested substances in the colon result in the formation of faeces. Explain the formation of faeces in a human. Selepas penyerapan nutrien dalam usus kecil, bahan-bahan yang tidak tercerna dalam usus besar akan membentuk tinja. Terangkan pembentukan tinja dalam manusia. [4 marks] [4 markah] Diagram 6.1 Rajah 6.1

4551/ (ii) Digested nutrients will be absorbed by ileum and some of it will be transported to the liver. In the liver, the nutrients are used to form complex compounds or structural components. By using examples, describe the processes that take place in the liver. Makanan tercerna akan diserap oleh ileum dan sebahagiannya akan diangkut ke hati. Di hati, nutrien digunakan dalam pembentukan sebatian kompleks atau komponen struktur sel. Dengan menggunakan contoh yang sesuai, huraikan proses yang berlaku di hati. [6 marks] [6 markah] (b) Table 6. shows the food intake by Nazri in his daily menu. Jadual 6. menunjukkan makanan yang diambil oleh Nazri dalam menu hariannya. Meals Hidangan Breakfast Sarapan Coffee, Nasi Lemak, Fried Egg Kopi, Nasi Lemak, Telur goreng Types of food Jenis makanan Lunch Makan tengahari Rice, Beef Curry, Chicken Soup, Fresh Orange Juice Nasi, Kari Daging, Sup Ayam,Jus Oren Dinner Makan malam Chicken chop, Grilled burger, Mushroom soup, Carbonated drinks Chicken chop, Burger bakar, Sup Cendawan, Air berkarbonat Table 6. Jadual 6. Nazri takes this menu continuously for a long time. Based on the table 6., analyse the food content and justify the consequences to his health Nazri mengambil menu ini secara berterusan dalam jangka masa yang panjang. Berdasarkan Jadual 6., analisis kandungan makanan dan beri justifikasi makanan ini terhadap kesihatannya [10 marks ] [10 markah]

3 4551/ 7. (a) Diagram 7(a)(i), 7(a)(ii), 7(a)(iii) shows the role of auxins hormone to the response in plant. Rajah 7(a)(i). 7(a)(ii), 7(a)(iii) menunjukkan peranan hormon auksin terhadap gerakbalas tumbuhan. Diagram 7 (a)(i) Diagram 7 (a) (ii) Diagram 7 (a) (iii) Explain what happen to the coleoptile shown in Figure 7(a)(i), 7(a)(ii), 7(a)(iii) Terangkan apa yang berlaku kepada koleoptil dalam Rajah 7(a)(i), 7(a)(ii), 7(a)(iii) [10 marks/10 markah]

4 4551/ (b) (i) Haemophilia is a condition in which the blood cannot clot normally. This condition is due to the lack of a protein needed for normal blood clotting. This disease often results in excessive bleeding either internally or externally. Blood clotting is control by dominant alelle and Haemophilia is control by recessive allele. In a family, the mother is a carrier of the Haemophilia while the father has normal blood clotting trait. By using the key given, construct a genetic diagram to show the probability or percentage of having normal children and a carrier female child. Key : Let H represent the dominant allele Let h represent the recessive allele Hemofilia adalah keadaan yang dialami oleh seseorang individu apabila darah pada Iukanya gagal membeku.keadaan ini disebabkan oleh kekurangan protein yang diperlukan untuk pembekuan darah. Hemofilia menyebabkan penghidapnya mengalami pendarahan atau kehilangan darah secara berlebihan sama ada luaran atau dalaman. Pembekuan darah dikawal oleh alel dominan dan Hemofilia dikawal oleh alel resesif. Di dalam satu keluarga, ibu merupakan pembawa kepada Hemofilia sementara bapa adalah normal. Dengan menggunakan kunci yang diberi, bina satu gambar rajah genetik menunjukkan kebarangkalian atau peratus untuk mendapatkan anak yang normal dan anak perempuan pembawa. Kunci Katakan H mewakili alel dominan Katakan h mewakili alel resesif ii) Rahman is a normal person married with Salmiah which is haemophilliac. What is the probability for them to have a normal son?. Explain your answer. Rahman adalah normal berkahwin dengan Salmiah yang haemophilia. Apakah kebarangkalian untuk memperolehi anak lelaki yang normal?. Terangkan jawapan anda. [10 marks] [10 markah]

5 4551/ 8.a) Biodiversity refers to diversity of organisms on the earth.biodiversity helps increase the productivity of an ecosystem where each species plays an important role. Biodiversiti merujuk kepada kepelbagaian organisma di bumi.biodiversiti membantu meningkatkan produktiviti suatu ekosistem di mana setiap spesies memainkan peranan penting masing-masing. Diagram 8.1 Rajah 8.1 Based on the diagram 8.1,discuss the role of organism in maintaning biodiversity in the lake. Berdasarkan rajah 8.1,bincangkan peranan organisma dalam mengekalkan biodiversiti dalam sebuah tasik. [ 10 marks] [ 10 markah ] 8b)

6 4551/ Diagram 8./ Rajah 8. Mangrove swamp are mostly found in the tropikal and subtropikal regions where freshwater meets salt water.diagram 8. shows Rhizophora sp. which is one of the mangrove species. Discuss the problems faced by Rhizophora sp. and how it adapts with the surrounding of mangrove swamp? Kawasan Paya Bakau merupakan kawasan air tawar yang bertemu dengan kawasan air masin dan boleh dijumpai di kawasan tropika dan subtropika.rajah 8. menunjukkan Rhizophora sp.iaitu salah satu spesies pokok bakau. Bincangkan masalah yang dihadapi oleh Rhizopora sp. dan cara menyesuaikan diri dalam kawasan paya bakau? [6 marks/6 markah] 8c) Diagram 8.3/ Rajah 8.3 Based on the news article in Diagram 8.3,list the importance of preservation of the mangrove swamp. Berdasarkan keratan akhbar dalam Rajah 8.3, senaraikan kepentingan memelihara hutan paya bakau. [4 marks/4 markah]

7 4551/ 9 (a) Diagram 9.1 shows the various types of food which has been processed through food processing methods. Rajah 9.1 menunjukkan pelbagai jenis makanan yang diproses melalui kaedah pemprosesan makanan. Diagram 9.1 Rajah 9.1 (a) Describe the food processing methods for each types of food and their good effects for human health. Terangkan kaedah pemprosesan makanan bagi setiap makanan dan kesan baik kepada kesihatan manusia. [10 marks] [10 markah]

8 4551/ (b) A group of farmer plan to develop an agriculture nearby the lake. Besides to obtain a high agriculture yield, they suggest that the area to be made into an ecotourism area. The following are details of their planning. Sekumpulan peladang merancang untuk menjalankan aktiviti pertanian berhampiran sebuah tasik. Selain menguruskan ladang pertanian, mereka bercadang untuk membangunkan satu kawasan eko-pelancongan. Berikut adalah perincian tentang rancangan tersebut: Types of plants Jenis tanaman Location Lokasi Types of fertilisers used Jenis baja yang digunakan : Strawberry and Orchid plants : strawberi dan bunga orkid : nearby a natural lake : Berhampiran tasik semulajadi : compost, lead nitrate salt, magnesium nitrate, Phosphate : baja kompos, garam plumbum nitrat, magnesium nitrat dan fosfat Based on the statement given, explain the effect to the lake if their management is not properly carried out. Berdasarkan pernyataan yang diberi, terangkan kesan ke atas tasik ini sekiranya pengurusan tidak dilaksana dengan sempurna. [10 marks] [10 markah] END OF QUESTION PAPER KERTAS SOALAN TAMAT