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PEPERIKSAAN PERTENGAHAN TAHUN 2013TINGKATAN 4

SAINS

Kertas 2

Dua jam tiga puluh minit

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

1. Kertas soalan ini mengandungi 11 soalan.

2. Jawab semua soalan Bahagian A dan Bahagian B.

3. Jawab soalan No.9 Bahagian C.

4. Pilih mana-mana satu soalan No. 10 atau No. 11, Bahagian C.

4. Lihat arahan dan kehendak soalan dengan teliti.

Kertas soalan ini mengandungi 14 halaman bercetak

Kod Pemeriksa Markah

Bahagian Soalan Markah Penuh

Markah Diperolehi

A1 82 73 5

B

4 55 56 67 78 7

C9 1010 1011 10

Jumlah

1511/2Sains Kertas 2 Mei 2013 2½ jam

NAMA: …………………………………………………………………. TINGKATAN: ………………………………………………………….

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Section ABahagian A[20 marks]

Answer all questions in this sectionJawab semua soalan dalam bahagian ini.

1. Ketinggian pelajar dalam satu kelas diukur. Data yang diperolehi di tunjukkan di bawah: The height of students in a class is measured. The data obtained is shown below.

TABLE 1(a) Berdasarkan data dalam jadual 1, lengkapkan Jadual 2

Based on the data given in Table 1, complete Table 2.

Ketinggian pelajar/cm Height of students / cm 146 – 150 151 – 155 156 – 160 161 – 165 166 - 170

Bilangan pelajarNumber of students

JADUAL2 /TABLE 2 [2 marks](b) Berdasarkan Jadual 2, lukis graf bar(histogram)

Based on the table 2, draw a bar chart (histogram)

Ketinggian pelajar / cmHeight of students / cm

154 160 156 147 153 168 152160 159 166 155 157 163 158167 165 156 158 162 159 154159 168 163 156 152 157 157

2

15

10

5

146 - 150

151 - 155

156 - 160

161 - 165

166 - 170

Height/cm

Number of students

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[3 marks](c) Berdasarkan graf dalam 1(b), nyatakan jenis variasi bagi ketinggian.

Based on the graph in 1(b), state the type of variation shown by the height.

……………………………………………………………………………………………………………[1 mark]

(d) Apakah faktor yang mempengaruhi variasi ini?What is the factor that influencen this variation?

…………………………………………………………………………………………………………….[1 mark]

(e) Beri satu contoh lain variasi jenis ini.Give another example of this type of variation

……………………………………………………………………………………………………….. [1 mark]

2. Diagram 1 shows the apparatus set up to study the reaction between zinc and dilute sulphuric acid. A type of gas is produced and collected in a burette.

Rajah 1 menunjukkan radas yang digunakan untuk mengkaji tindakbalas di antara zink dan asid sulfurik. Sejenis gas dihasilkan dan dikumpul di dalam buret.

Diagram 1

The experiment is carried out for 10 minutes and the volume of gas is recorded every two minutes. The result is shown in Table 1.

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1511/2Eksperimen ini dijalankan selama 10 minit dan isipadu gas dicatatkan setiap dua minit. Keputusan ditunjukkan dalam Jadual 1.

Times (minutes)Masa (minit)

0 2 4 6 8 10

Volume of gas (cm³)Isipadu gas

0 15 25 33 38 40

Table 1

a) Using the results in Table 1, draw a graph of the volume of gas collected against time. Dengan menggunakan Jadual 1, lukiskan graf isipadu gas yang kumpul melawan masa.

[ 3 marks]

b) Based on the graph that you had drawn, state the relationship between the volume of gas Z and time? Berdasarkan graf yang telah anda lukis, nyatakan hubungan di antara isipadu gas Z dan masa?

…………………………………………………………..………………………………….[1 mark]

c) i. State the manipulative variable in this experiment.Nyatakan pembolehubah dimanipulasi dalam eksperimen ini.

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……………………………………………………………………………………….

ii. State the responding variable in this experiment? Nyatakan pembolehubah bergerakbalas dalam eksperimen ini?

…………………………………………………………………….……………………….. [2 mark]

d) What is the volume of gas collected at the fifth minute? Berapakah isipadu gas yang yang dikumpul pada minit ke lima?

…………………………………………………………………………..…………………… [1mark]

3. Seorang pelajar memerhati kan fenomena berikut seperti rajah 2.A student observed the following phenomenon shown in the diagram 2.

(a) Cadangkan satu hipotesis untukmenyiasat pemerhatian di atas.Suggest one hypothesis to investigate the above observation.

……………………………………………………………………………………………………………

…………………………………………………………………………………………………. [1 mark]

(b) Berdasarkan eksperimen di atas kenal pasti pemboleh ubah.Based on th above experiment, identify the variables.

(i) Pemboleh ubah dimanipulasi :Manipulated variable…………………………………………………………………………………………………

[1 mark]

(ii) Pemboleh ubah bergerak balas :

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1511/2 Responding variable ………………………………………………………………………………………………

[1 mark]

(iii) Pemboleh ubah dimalarkanConstant variable :…………………………………………………………………………………………………..

[1 mark]

(c) Apakah kesimpulkan yang dapat dibuat daripada experiment iniWhat is the conclusion that can be made from this experiment?

………………………………………………………………………………………………………[1 mark]

Section B / Bahagian B

[30 marks]

Answer all questions in this section.Jawab semua soalan dalam bahagian ini.

4. Diagram 5 shows a human muscleRajah 5 menunjukkan otot manusia.

Diagram 5

(a) (i) Name structure P in Diagram 5. Namakan struktur P dalam rajah 5. [1 mark]

(ii) State the function of structure P.Nyatakan fungsi struktur P.

…………..………………………………………………………………………… [1 mark]

(b) Name the receptor that involves in this system.Namakan reseptor yang terlibat dalam system ini.

…………..………………………………………………………………………… [1 mark]

(c) Give one example of daily activities that involved this system.Berikan satu contoh aktiviti harian yang menggunakan sistem ini.

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……..………………………………………………………………………….… [1 mark]

(d) State the importance of this system to human.Nyatakan satu kepentingan system ini kepada manusia.

………………..…………………………………………………………………… [1 mark]

5 Rajah 2 menunjukkan perwarisan sifat jenis rambut.Diagram 2 shows the inheritance of hair type.

(a) Lengkapkan rajah di atasComplete the above Diagram2.

[2 marks](a) Apakah process Q?

What is the process Q?

…………………………………………………………………………………………………………… [1 mark]

(b) Apakah nisbah anak perempuan rambut kerinting kepada rambut lurus?What is the ratio of the daughter with curly hair to the straight hair?

…………………………………………………………………………………………………………… [1 mark]

(c) Apakah maksud gen dominan?What is the meaning of the dominant gene?

Hh

hh

Bapa (rambut kerinting) Father (Curly hair)

Ibu(rambut lurus)Mother (Straight hair)

X

ha

h

hh hh

Parents

Gametes

Firstgeneration

Meiosis

Process Q

Key

H– Dominant genes curly hair

h– Recessive genes straight hair

DIAGRAM 2

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…………………………………………………………………………………………………………… [1 mark]

6. Diagram 6 shows the formation of twins.Rajah 6 menunjukkan pembentukkan kembar.

Diagram 6 (a) Name the gametes P and Q.

Namakan gamet P dan Q.

P:........................................................ Q:.............................. [2 marks]

(b) What are processes X and Y?

Apakah proses X dan Y?

Process X :…………………………………………………………………………

Process Y:………………………………………………………………………[2 marks]

(c) M is a single cell formed after the fusion of gamete P and gamete Q. What is M?M ialah sel tunggal yang terbentuk selepas percantuman gamet P dan gamet Q. Apakah M?

…………………………………………………………………………………… [1 mark]

(d) State the type of twins formed.Nyatakan jenis kembar yang terbentuk.

………………………………………………………………………………… [1 mark]

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7 Father (Suami) Mother (Isteri)

Rajah

The schematic diagram below shows sex determination of an offspring. (Rajah menunjukkan penentuan seks pada manusia.)

(a) Complete the schematic diagram above. (Lengkapkan Rajah 2). [4 marks]

(b) Name the process P. (Namakan proses P yang berlaku.)

______________________________________________________________________________[1 mark]

(c) The probability ( in percentage ) of a son or a daughter being born at each birth is (Berapakah kebarangkalian bagi pasangan suami isteri mendapat anak lelaki ?)

______________________________________________________________________________[2 marks]

(d) If a husband were to face hemofhilia deficiency, what is the percentage for his child to get this desease? Jika suami mengalami kecacatan hemofilia, berapakah peratusan daripada anaknya yang mungkin

menghidap penyakit yang sama ? ______________________________________________________________________________

[1 marks]

9

44 + XY 44 + XX

22 + X 22 + Y 22 + X 22 + X

Process P (Proses P)

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8 Write the disease with the correct description in the box provided. (Tuliskan penyakit dengan definisi yang betul di dalam kotak yang disediakan.)

[7 marks]

DISEASES DEFINITION

Albinism [A] Lack of a protein in the blood that is necessary for blood-clotting (Kekurangan protein dalam darah yang menyebabkan darah lambat membeku)

Down’sSyndrome

[B] The mutant genes cause the red blood cells to be sickle shaped. The patient is pale because the red blood cells carry little oxygen due to lack of haemoglobin and are easily broken. (Mutasi gen menyebabkan sel darah merah menjadi sel sabit. Pesakit pucat kerana sel darah merah yang membawa oksigen kurang akibat kekurangan hemoglobin dan sel mudah pecah).

Colour-blindness

[C] A female who has only one X chromosome. The female has no ovaries and menstrual cycle. (Perempuan yang ada satu kromoson X. Perempuan ini juga tiada ovari dan kitaran haid).

Turner’sSyndrome

[D] Hereditary lack of pigmentation in an organism. The animals or human beings have no colour in their skin, hair or eyes. (Kekurangan pigmen dalam manusia. Haiwan atau manusia tidak mempunyai warna pada kulit, rambut dan mata).

Sickle-cellanaemia

[E] Possession of an extra chromosome 21. The child has short neck, short nose, downward-sloping eyes and protruding tongue. (Kelebihan satu kromosom ke 21. Anak mempunyai leher pendek, hidung pendek, mata sepet dan lidah pendek).

Klinefelter’sSyndrome

[F] The existence of a recessive gene that is defective and causes an inability to see and differentiate between red and green colour (Kehadiran gen resesif menyebabkan untuk melihat dan membezakan antara warna hijau dan merah).

Haemophilia[G] Presence of three sex chromosomes (XXY) instead of the usual two. Males are sterile and have small testes (Kehadiran tiga kromosom iaitu (XXY) sepatutnya hanya XY menyebabkan lelaki mempunyai ciri-ciri keperempuanan dan

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SECTION CBahagian C

[20 marks]

Answer Question 9 and either Question 10 or Question 11.Jawab Soalan 9 dan sama ada Soalan 10 atau Soalan 11.

9. Kaji kenyataan dibawah ini Study the following statement

(a) Cadangkan satu hipotesis untuk mengkaji kenyataan di atasSuggest a hypothesis to investigate the above statement. [1 mark]

(b) Dengan menggunakan daun yang dikutip di kawasan sekolah, terangkan satu eksperimen untuk menguji hipotesis in berdasarkan kriteria di bawahUsing the leaves that found around your school compound, describe an experiment to test your hypothesis in (a) based on the following criteria;

Tujuan eksperimen / Aim of the experiment [1 mark]

Mengenalpasti pemboleh ubah / Identification of variables[3 marks]

Senarai alatradas / List of apparatus [1 mark]

Procedure / Kaedah [3 marks]

Tabulation of data/ penjadualan data[1 mark]

10. Terdapat dua jenis variasi, variasi selanjar dan variasi tak selanjar.There are two types of variation, continuous variation and discontinuous variation.

(a) Berikan dua perbezaan antara variasi selanjar dan variasi tak selanjar.Give two differences between continuous variation and discontinuous variation.

[4 marks]

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Saiz daun ialah sejenis variasi selanjarThe size of leaf is a continuous variation

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(b) Rajah 6 menunjukkan pelbagai ciri benda hidup.Figure 6 shows various characteristic of human being.

FIGURE 6

Kaji maklumat dalam rajah 6 dan bina konsep variasi selanjar.Study the information in figure 6 and construct the concept of continuous variation.

Your answer should be based on the following steps Kenalpasti maklumat

Identify the information [1 mark]

Kenalpasti dua ciri sepunya Identify the common characteristics [2 marks]

Beri satu contoh variasi selanjar dan variasi tak selanjarGive an example of another continuous variation and discontinuous variation

[2 marks] Nyatakan konsep sebenar bagi variasi selanjar

State the actual concept of continuous variation [1 mark]

Variation/variasi

Height/ ketinggia

n

Weight/Berat badan

Skin colour/Warna kulit

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11 (a) Nyatan empat perbezaan antara tindakan terkawal dan tindakan luar kawal.State four differences voluntary action and involuntary action.

[4 marks]

(b) Rajah 7 menunjukkan beberapa aktiviti ysng dijalankan oleh beberapa orang murid.Diagram 7 shows several activities conducted by a student.

DIAGRAM 7

Kaji maklumat dalam rajah 7 dan bina konsep koordinasi sarafStudy the information in diagram 7 and construct the concept of nervous coordination.

Jawapan anda mesti berdasarkan berikut Your answer should be based on the following steps;

Kenalpasti maklumatIdentify the information [1 mark]

Kenalpasti ciri sepunyaIdentify the common characteristics [1 mark]

Hubungkaitkan ciri sepunya untuk membina konsep awal.Relate the common charaterisrics in order to construct the initial concept

[1 mark] Nyatakan contoh dan bukan contoh.

Give an example of another and non-example[2 marks]

Nyatakan konsep sebenar KoordinasiState the actual concept of coodination [1 mark]

~END OF QUESTIONS~___________________________________________________________________________

Prepared by : Checked by : Verified by :

………………….…. ……………….……… …….………………….Pn. Masitah bt Abu Bakar Pn. Nurul Eliza bt Musa Pn. Salwana bt Salleh Guru Sains Ting.4 Ketua Panitia Sains Guru Kanan Sains & Math SMK Sierramas SMK Sierramas SMK Sierramas

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Menulis/writing

Membaca/reading

Koordinasi/Coordination

Berlari/running

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JAWAPAN BAHAGIAN CANSWERFOR SECTION C:

1 (a) Hipotesis : ……………………yang berlainan mempunyai …………………….. yang belainan

Hipothesis :Different ……..…………….. …..has different …………….……………………[1M]

(b) Tujuan : Mengkaji pelbagai ……………………………………………………………………..

Aim : To investigate the various …………………………………………………………[1M]

Pemboleh ubah/ Variables :

Pembolehubah dimalarkan: …………………………………………………………………Constant Variable :

Pembolehubah dimanipulasi :……………………….…………………..………….daunManipulated variable : of leaf

Pembolehubah bergerak balas Respond ing variable : …………………………………………………………...............[3M]

Senarai alat radas / List of apparatus : ……………………………………………………[1M]

Kaedah/ Procedure :

1. Beberapa ………………………………….telah di kumpulkan

Some ………………..……………. are collected.

2. …………………daun yang berbeza telah diukur dengan menggunakan…………………..……..

………………………….….. of different leaf is measured using………..……………..

3. ……………………………… daun telah direkodkan dalam jadual.

The………………………… of leaf is recorded in a table.

[3M]Penjadualan data/Tabulation of data :

[1M]

…………………… ……………………………….

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(a)Continuous variation Discontinuous variationDifference is not obvious Difference is obviousCause by genetic and enviroment factor

Cause by genetic factor

Graph Normal distribution Graph discrete distributionExample : height Example : Blood group

[4 marks]

(b) The information : Height, weight and skin colour are the example Continuous variation .Their differences is not obvious

[1 mark]Common characteristics : Difference is not obvious

Cause by genetic and environment factor[1 mark]

The initial concept: Cause by genetic and environment factor and their differences are not obvious are the initial concept of Continuous variation.

[1 mark]Another example: size of footNot example: blood group

[2 marks]The actual concept of continuous variation is refers to characteristic which do not show obvious

different and cause by genetic and environment factor[1 mark]

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