SKEMA PEMARKAHAN BAHAGIAN A KERTAS 2 MODUL MPSM KEDAH
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1 SULIT 455/ (PERATURAN PEMARKAHAN) SKEMA PEMARKAHAN BAHAGIAN A KERTAS MODUL 04 MPSM KEDAH QUESTION NO (a) (i) P:Dinding sel Q:Kloroplas R: Mitokondria F : P/Dinding sel dibina daripada selulosa P :sejenis karbohidrat yang kuat dan tegar. P : Memberikan bentuk yang tetap kepada sel. F : P / Dinding sel bersifat telap sepenuhnya P : Membolehkan pergerakan bebas masuk bahan dari luar ke dalam sel membolehkan tekanan segah berlaku untuk sel. P : sitoplasma terkeluar dari sel Mana-mana ( F +P) (iii) P enzim selulase menghidrolisiskan selulosa P untuk menghasilkan glukosa (b) (i) Perbezaan antara proses dalam Q dan R : Proses dalam Q Proses dalam R Memerlukan Karbon dioksida Menghasilkan karbon dioksida Memerlukan tenaga Menghasilkan tenaga Menghasilkan glukosa Menggunakan / mengurai glukosa Memerlukan cahaya Tidak memerlukan cahaya Berlaku bila cahaya mencukupi Berlaku pada bila-bila masa Mana-mana P Kepekatan karbon dioksida meningkat. P Karbon dioksida ialah gas rumah hijau. P - Gas rumah hijau menyerap haba yang banyak. P4 Suhu persekitaran meningkat. P5 Menjana kepada kesan rumah hijau. Mana-mana 455/ 04 Hak Cipta terpelihara MPSM (Cawangan Kedah)
2 SULIT 455/ (PERATURAN PEMARKAHAN) QUESTION NO (a) (i) Able to name Answer: Phase S : Prophase Process U : Crossing over Able to explain importance of the chromosomal behavior during phase S. Sample Answer: P-Exchange of genetic material between homologous chromosome P- produce new genetic combination P-(crossing over) causes variation P4-This will enhance the ability of survival in different environment. Any (b) (i) Able to complete the diagram of the daughter cells and explain the occurrence Sample answer Drawing : V Drawing : W V W P-During anaphase II P-Sister chromatids ( of one chromosome) is not separated P- Sister chromatid is not pulled by spindle fibre P4- nondisjunction occur Any 455/ 04 Hak Cipta terpelihara MPSM (Cawangan Kedah)
3 SULIT 455/ (PERATURAN PEMARKAHAN) (c) (i) Meiosis I Synapsis occur during prophase Crossing over/ exchange of genetic material occur between sister chromatid of homologous chromosome Homologous chromosomes align at the metaphase plate during metaphase I. Homologous chromosomes separate and move to the opposite pole during anaphase I. Two haploid daughter cells are formed Meiosis II No synapsis takes place during prophase No crossing over takes places Chromosomes align at the metaphase plate during metaphase II Sister chromatids separate and move to the opposite pole during anaphase II Four haploid daughter cell are formed. Any P-it results in the formation of haploid gametes for reproduction P- it maintain the number of chromosome in each generation of organism. P- produce variation Any Total 455/ 04 Hak Cipta terpelihara MPSM (Cawangan Kedah)
4 SULIT 4 455/ (PERATURAN PEMARKAHAN) QUESTION NO. (a) (i) : 50kJ : 5 kj Tenaga hilang kepersekitaran melalui P - proses respirasi P - pembuangan bahan kumuh melalui air kencing P pembuangan bahan kumuh melalui penyahtinjaan Mana-mana (b) (i) Komponen Biotik :Tumbuhan, ikan, penyu, katak, alga mana mana Komponen abiotic :Udara, Air, cahayamatahari, ph tanah- Mana-mana Pepatung Katak Burung Rumput Ikan kecil Ikan besar Cacing ( c) P Pertumbuhan alga menghalang kemasukan cahaya matahari ke dalam sungai P- Menghalang proses fotosintesis P-Oksigen akan berkurang P4-Organisma akan mati Mana-mana Total 455/ 04 Hak Cipta terpelihara MPSM (Cawangan Kedah)
5 SULIT 5 455/ (PERATURAN PEMARKAHAN) 4 QUESTION NO (a) Organism P: Double closed circulatory system Organism Q: Single closed circulatory system + (b) Organism P Organism Q PI Heart has 4 chambers Heart has chambers P has two atriums and two ventricles // has right atrium, left atrium, right ventricle and left ventricle has one ventricle and one atrium // has ventricle and an atrium P heart receives both oxygenated blood and deoxygenated separately heart receives the mixed oxygenated blood and deoxygenated blood. Any (c) F : contraction of ventricle/ heart E: generates a (high) pressure E: (to) propel/ force/ pump the blood flow from the heart/ ventricle to vessel A Any (d) (i) Individual A: Artificial/ (Acquired) active immunity Individual B: Artificial/ (Acquired) passive immunity P : The first dose results the production of low level of Antibody // the concentration of antibody still not reach the immunity level P: Second dose is needed to stimulate lymphocyte to produce more antibodies P: until it reaches the immunity level. P: that protects the person against the disease. Any 455/ 04 Hak Cipta terpelihara MPSM (Cawangan Kedah)
6 SULIT 6 455/ (PERATURAN PEMARKAHAN) (e) P : HIV weakens the immune system P : By attacking helper T cell (which coordinates the immune system.) P : Helper T cells are essential to activate other lymphocytes in the body immunity. P4 : HIV also attack the central nervous system P5 : Decrease in the function of nervous system. P6 : The patient can expose himself to secondary infections. Any Total 5 (a) (i) Ultrafiltration m F: High hydrostatic pressure P: caused by the bigger diameter of the afferent arteriole compared to the efferent arteriole P: many constituents of the blood to be filtered out into the Bowman s capsule. Any two (b) P: Glucose and amino acids are reabsorbed at Q. P: Glucose / amino acid is present in Q but absent in R. P: R contain more urea / uric acid /ammonia compared to Q. Any (c) (i) ADH // Antidiuretic hormone (d) During hot day, more sweat is produced the blood osmotic pressure is high More ADH is secreted by pituitary gland Increases the permeability of collecting duct to water More water is reabsorbed Blood osmotic pressure back to normal. Less urine produced // urine becomes more concentrated Any The concentration of urea and salts are higher in the blood compared to dialysis fluid As the blood flow through the coiled tubing / dialysis machine, excess urea and salts diffuse across the tubing walls into dialysis fluid Therefore, urea and excess salts can be removed from the patient s blood Osmotic pressure can be maintained at normal level Any Total: m 455/ 04 Hak Cipta terpelihara MPSM (Cawangan Kedah)
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