Science Obc

129

SCIENCE Paper

Paper 1 4551/1

Paper 2 4551/2

1

Type of Item

Objective Items : Subjective Items : • Multiple-choice • Section A : Structured • Multiple-combination based items • Section B : Limited Each item consists of four opinions: A, B, C and D. response items • Section C : Extended response items

2

Number of questions

50 questions Answer all

Section A : • 4 items - Answer all Section B : • 5 items – Answer all Section C : • 3 items – Answer Q10 and choose one from Q11 and Q12

3

Total marks

50 marks

50 marks

4

Duration of test

1 hour 15 minutes

2 hours 30 minutes

5

Requirement of Section A : • Knowledge – 25 construct Section B : • Understanding - 15 Section C : • Application – 10

Knowledge Understanding Application skills Analysing skills Synthesizing skills Evaluating skills

6

Marking

Dichotomous 1 or 0 mark.

Analytical marking based on rubric scoring.

7

Level of difficulty : Low : L : 50% Moderate : M : 30% High : H : 20%

L:M:H 3 :1 :1 • 30 easy items • 10 moderate items • 10 difficult items

L:M:H 4 :4 :2 • 40 easy scores • 20 moderate scores • 20 difficult scores

- 10 - 20 - 30 - 15 - 15 - 10

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Aspect

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Format of Science Paper SPM Level

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130

ANALYSIS OF THE SPM SCIENCE PAPER 2003 – 2006

2003 P2 Section C

P2 Section A

B

P1

C

1

2006

P2 Section A

B

3

1

1

4

1

P1

C

OBJECTIVE

B

2005

OBJECTIVE

A

P1

OBJECTIVE

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P1

OBJECTIVE

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TOPICS

2004

P2 Section A

B

C

1. Scientific Investigation. 2. Body Coordination

3

1

3

3. Heredity and Coordination

4

1

5

4. Matter and Substances

4

1

4

5. Energy and Chemical Changes

3

1

4

6. Nuclear Energy

2

7. Light, Colour and Sight

4

8. Chemicals in Industry

2

Number of Form 4 questions

22

3

9. Microorganisms and Their Effects On Living Things

5

1

10. Nutrition and Food Production

4

11. Preservation and Conservation of the Environment

3

12. Carbon Compound

4

13. Motion

5

14. Food Technology and Production

3

15. Synthetic Materials in Industry

2

2

16. Electronics and Information and Communication Technology

2

2

Number of Form 5 questions

28

1

2

3

24

3

4

Total Number of Questions

50

4

5

3

50

4

5

1

1 1

1

3

1

-

1 1 1 1

1

5

1

3

1

1

2

1 1

2 5

1 1 1

2

26

3

5

5

3 3

4

2

1

1

1

2

2

4

1

3

3

2

1

2 1

4

1

1

23

5

1 1

1

5 1

1

4

1

3

2

3

1

2

2

1

2

5

2

1

1

2

4

1

3

4

4 1

1

23

1

5

3

4

3

1

2

1

27

2

2

1

27

4

5

3

50

4

5

3

50

4

5

3

131

SCIENCE

1. Figure 1 shows the structure of a human brain.

4. Which of the following represent condensation?

Figure 1

A

B

D

C

5. Base on Table 1, which elements are isotopes ? Element

Which of parts P, Q, R and S is the cerebellum? A. P B. Q C. R D. S

Nucleon number

Number of protons

Numbers of neutrons

P

12

6

6

Q

13

6

7

R

14

7

7

S

16

8

7

Table 1

2. Figure 2 below shows the structure of neutron

A. P and S B. P and Q C. R and S D. R and Q 6. The Figure 4 below shows the flow chart on the development of a baby Testes Ovary Figure 2

This neuron ………………… A.contains a short axon B. controls all the activities of other neurons in the body. C. delivers impulses to effectors D. can be found in the spinal cord. 3. The figure 3 shows some chromosomes.

Zygote

Foetus

What is process X and Y ? A. B. C D.

Figure 3 The exchange of genetic material takes place in the A. spindle fibres B. centromeres C. centrioles D. chromatids

Figure 4

X Mitosis Meiosis Cross over Fertilisation

Y Meiosis Mitosis Meiosis Mitosis

7. Figure 5 shows the inheritance of height of a plant. Figure 5

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SATU JAM

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KERTAS 1

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CONTOH KERTAS SOALAN CONTOH KERTAS SOALAN CONTOH KERTAS SOALAN

132 Which offspring has a correct pair of genes ? Pair of genes P Q R S

Tt TT TT tt

A B C D

8. Figure 6 shows an incomplete Periodic Table.

X Decay Photosynthesis Decay Respiration

Y Respiration Decay Photosynthesis Photosynthesis

Z Photosynthesis Respiration Respiration Decay

12. Figure 10 below shows an artery that has been narrowed.

1

18 2

13 14 15 16 17

3

4

5

6

7 8

9 10 11 12

Figure 10

X

Element X is a A. metval B. non- metal

Figure 6 C. gas D. transition element

9. Figure 7 shows three examples of microorganisms.

Which class of food causes the change in the size of the lumen? A. Fats C. Proteins B. Vitamins D. Roughage 13. Figure 11 below shows a pond ecosystem. Figure 11

Figure 7 Identify the microorganisms. A B C D

P Bacteria Virus Protozoa Fungi

Q Viruses Fungi Alga Protozoa

Which of the following organisms in the pond are producer?

R Protozoa Alga Viruses Bacteria

A. I and II only B.I and III only

10. Figure 8 below shows a set-up of an apparatus for an experiment to investigate a factor which influences the growth of bacteria

C.II and III only D. I, II and III

14. Figure 12 below shows the positions of some endocrine glands in the body.

Figure 8

What is the factor investigate? A. Nutrient C. Light B. Temperature D. pH value 11. Figure 9 below shows a simple nitrogen cycle.

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Offspring A. B. C. D.

Name processes X, Y, and Z

Figure 9

Figure 12 Which gland will prepare us to face emergencies ? A P B Q C R D S

133 21. Plastics cause environmental pollution because I. they are non-biodegradable II. they block the drainage system III. the burning of plastics produces toxic gases.

22. Which of the following pairs is incorrectly matched? What is gas X ? A. Chlorine B. Oxygen

C. Nitrogen D. Hydrogen

16. The following word equation shows a chemical process. Alcohol + Organic acid

What is X ? A. Urea B. Ester

X

+ Water

Synthetic polymer

Use

A. B. C.

Polythene

Plastic bags

Polyvinyl chloride (PVC)

Electric plugs and sockets

Polystyrene

Protective packaging for electronic goods

D.

Perspex

Windows of aeroplanes

C. Ethanol D. Ammonia

23. Waves are generated by A. solar energy B. electricity Which of following can maximise the production of food? C. forces that cause vibrations or oscillations 17. A. Practice alternate D. compression B. Use modern technology C. Plant cover crops 24. A communication satellite functions as D. Practice terrace planting I. a receiver III. an amplifier II. a transmitter 18. Figure 14 shows a stone being weighed in the air and then A. I and II only C. I and III only in water. B. I and III only D. I, II and III Figure 14 25. In radio transmission system, sound waves are changed into audio signals by A. an oscillator B. a microphone

C. a modulator D. an aerial

26. Gland X in Figure 16 is an endocrine gland What is the upthrust experienced by the stone? A. 0.4 N C. 0.8 N B. 0.6 N D. 1.4 N 19. A plant is known as a producer if it can A. use oxygen B. carry out photosynthesis C. absorb nutrients from the soil D. produce carbon dioxide 20. Figure below shows a process in the production of a synthetic material Figure 15 Process P Neoprene What is process P ? A. Vulcanisation B. Polymerisation

Polyneoprene C. Coagulation D. Depolymerisation

X

Figure 16 Which of the following is the function of the hormone secreted by gland X ? A. Prepares the uterus to receive ovum B. Controls blood sugar level C. Controls water in the body 27. The ovary produces a hormone which controls I. the menstrual cycle III. the production of ovum II. female secondary sexual characteristics A.I and II only B. I and III only

C. II and III only D. I,II and II

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C. II and III only D. I, II and III

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A. I and II only B. I and III only

Figure 13

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15. Figure 13 shows a reaction between carbon dioxide and water

134 33. Which of the following is correct ? A. B. C. D.

X Neutron Electron Proton Proton

Y Electron Proton Electron Neutron

Z Proton Neutron Neutron Neutron

29. When the purple flowered peas were crossed with white flowered peas, all the peas produced were purple flowered. This is because I. the peas produced are hybrids 34. Based on the table 2 above, which elements are isotopes? II. the purple colour is recessive III. the purple colour is a phenotype P 12 6 6 Table 2 Q 13 6 7 A. I and II only C. II and III only R 14 7 7 B. I and III only D. I, II and III W 16 8 7 30. A person suffering from Down‘s syndrome is said to be 35. Which of these processes involves a rise in attractive the result of forces between particles ? Element Nucleon number Number of Numbers of P Q R W

protons 6 6 7 8

12 13 14 16

neutrons 6 7 7 7

A. the loss of a X sex chromosome B. having an extra X sex chromosome C. having an addition chromosome D. having XXY sex chromosomes 31. Which of the following occurs in meiosis ? I. Four cells are produced II. The number of chromosomes is halved. III. Crossing over occurs in the chromosomes A. I and II only B. I and III only

C.II and III only D. I, II and III

A. Evaporation B. Melting

Particle X Y Z

Charge Positive Negative Neutral

37. Which of the following activities does not involve microorganisms? A. The production of ethanol B. The preparation of vaccine C. The preparation of antibiotic D. The preservation of food 38. Houseflies and Aedes mosquitoes are vectors. What types of pathogen are carried by these two vectors? A B C D

C. Rubella D. Tuberculosis

Housefly Bacteria Fungus Bacteria Virus

Aedes mosquito Virus Bacteria Protozoa Fungus

39. Which of the following is the most effective way to avoid ringworm infection?

Which of the following diseases cannot be prevented through vaccination? A Hepatitis B B Dengue fever

C. Crystallization D. Condensation

36. Which of the following microorganisms act as a producer in food web? A. Algae C. Bacteria B. Fungi D. Protozoa

32. Table below shows the charges of subatomic particles X,Y and Z.

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28. Which of the following is NOT TRUE ? A. Gene is found in DNA B. A gene is hereditary unit C. Recessive genes are hybrids D. Chromosomes are made up of DNA

A. Physical hygiene B. Control of the vector

C.Sterilisation D.Vaccination

40. Johari cycles 600 metres in 120 seconds. What is Johari’s speed?

A. 0.5m s-1 B. 5.0 m s-1

C. 480 m s-1 D. 740 m s-1

135 PAPER 2 Section A Answer all questions in this section. The time suggested to answer this section is 60 minutes

Metre ruler



Figure 1

Figure 1 shows the apparatus used in an experiment to study the extension of the spring by force. The results obtained are recorded in Table 1 below Force (N) 2 4 6 8 10 Extension (cm) 1 2 3 4 5 Table 1 (a) Use the results from table to draw a graph of force against extension.



[2 marks]

(b) State the hypothesis for this experiment. ____________________________________________________________________________

[1 mark]

(c) In the experiment, state the (i)

Fixed variable : _________________________________________________________ Manipulated variable :

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(ii)

_________________________________________________________ (iii)

Responding variable : _________________________________________________________

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1.

[2 marks]

136 2. An experiment was carried out to determine the effect of light, humidity and presence of the growth of bacteria. Table 2 below shows Petri dishes with four different conditions were set up. Conditions Presence of nutrients, humidity and dark condition Presence of nutrients, humidity and light condition Presence of nutrients, dry and dark condition No nutrients, has humidity and dark condition

Table 2

The result of the experiment is shown below.



W

Key

bacterial colonies

X Figure 2

Y

Z

(a) State the missing factor that causes the minimal growth of the bacteria in petri dishes X, Y and Z. i) X: _________________________________________________________

ii) Y: _________________________________________________________



iii) Z: _________________________________________________________

[3 marks]

(b) State the fixed variable of this experiment. ___________________________________________________________________________________

[1 mark]

(c) What will happen to the bacteria if they are exposed to bright light and kept dry? 3.

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Petri dish W X Y Z

___________________________________________________________________________________ Figure 3 shows a food web in the garden. grasshopper P

spider Q

(a) What is P?

bird

Figure 3

snake

___________________________________________________________________________________ (b)

[1 mark]

Name the example of Q. ___________________________________________________________________________________

(c)

[1 mark]

[1 mark]

i. Which is the primary consumer? ________________________________________________________



ii. What type of consumer are spider and bird? _________________________________________________________

[2 marks]

(d) What would happen to the population of frogs if all the snakes have been killed? ___________________________________________________________________________________

[1 mark]

(e) Name a predator of snake. ___________________________________________________________________________________

[1 mark]

137 4. Figure 4 shows an extraction process of a type of oil in a laboratory. (a) On Figure 4, name stage X.

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______________________________________________ Stage : Sterilization

______________________________________________ ______________________________________________ [1 mark] (c) (i) What is M?

Stage : Extraction

______________________________________________ ______________________________________________ [1 mark] Stage X: ____________

(ii) Name one vitamin found in M.

______________________________________________ ______________________________________________ [1 mark]

Figure 4 (d) Figure 5 shows parts of an oil palm fruit.

X

Figure 5 Kernel

Shell

X is the part of the oil palm fruit that produces a lot of substance M. What is X? __________________________________________________________________________________________________ [1 mark]

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(b) What will be destroyed in the oil palm fruit during stage sterilization?

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______________________________________________ [1 mark]

138 Section B Answer all questions in this section. The time suggested to answer this section is 50 minutes 5. Figure 6 below shows an impulse pathway when a student accidentally touches a sharp needle

Q: ..................................... Synapse

Motor neurone Figure 6

R: .....................................

(a) Name P,Q and R in the boxes provided in Figure 6

[3 marks]

(b) What happens to R when the student accidentally touches the sharp needle? ____________________________________________________________________________ (c)



[1 mark]

(i) What type of action is involved in (b) ? ____________________________________________________________________________

[1 mark]

(ii) Which part of the nervous system controls the action in (c) (i) ? ____________________________________________________________________________

[1 mark]

6. Figure 7 shows a carbon cycle.

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P: .....................................

Figure 7

(a)

i. Name the organisms P that can absorb and use carbon dioxide from the air.

_____________________________________________________________________________________

[1 mark]

139

ii. What is the type of energy needed by organisms P?

_____________________________________________________________________________________

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(b) How does the carbon in organisms P enter the animal’s body?

[1 mark]

_____________________________________________________________________________________

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________________________________________________________________________________________________ [1 mark] (c) i. Identify process W [1 mark]

ii. Why is this process important to all living things?

_____________________________________________________________________________________

[1 mark]

(d) Process X and process Y replace carbon back into the air. Name these processes. ________________________________________________________________________________________________ [1 mark] 7. Figure 7 shows an object is placed in front of a convex lens.

Figure 8 (a) On Figure 8, what is X? ________________________________________________________________________________________________ [1 mark] (b) i. Compare the size the object with X. _____________________________________________________________________________________ ii. State the position of image formed.

[1 mark]

_____________________________________________________________________________________ (c ) Predict the characteristic of image if the same object is positioned at:

[1 mark]

i. less than F.

_____________________________________________________________________________________ ii. 3F. _____________________________________________________________________________________

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[1 mark]

[1 mark]

140 (d) Name the instrument below that have the same characteristic is formed in the Figure 7.

8. Figure 9 shows the circuit of receiver with a radio transistor.

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Figure 9

(a) Which component in Figure 8 is able to amplify a current? ________________________________________________________________________________________________ [1 mark] (b) P is a diode. Draw the symbol of the diode in Figure 9.





[1 mark]

(c) Name the electronic component labelled as Q. ________________________________________________________________________________________________ [1 mark] (d) State a circuit that separates audio waves from radio waves. ________________________________________________________________________________________________ [1 mark] (e) State the changes of energy in the device labelled as R. ________________________________________________________________________________________________ [1 mark]

141 9. Figure 9 shows an experiment to compare the elasticity of a natural rubber, (Rubber P) with a natural rubber that has been soaked in sulphur monochloride solution, (Rubber Q).

_____________________________________________________________________________________________________ [1 mark] (b) Name the process that Rubber Q has undergone. _____________________________________________________________________________________________________ [1 mark] (c) State the variable in this experiment.

(i) Controlled variable:



________________________________________________________



(ii) Manipulated variable:



________________________________________________________

[1 mark]

[1 mark]

(d) State one characteristic of vulcanised rubber. _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ [1 mark]

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(a) State the hypothesis that can be made from this experiment.

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>>> Figure 10

I Section C Answer Question 10 and either Question 11 or Question 12. The time suggested to answer this section is 40 minutes.



Micro organisms such as bacteria cannot be grown without a suitable pH

(a) Suggest a hypothesis to investigate the above statement.

[1 mark]

(b) Describe an experiment to test your hypothesis in (a) based on the following criteria: i. Aim of experiment [1 mark] ii. Identification of variables [2 marks] iii. List the apparatus and materials [1 mark] iv. Procedure [3 marks] v. Tabulation of data [1 mark] vi. Conclusion [1 mark] 11. (a) State four factors that affect the calorific requirement of an individual and state the reasons. [4 marks]

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10. Study the following statement:

(b) Figure 4 shows the health problems suffered by Annisya’s father. Arteriosclerosis

Heart attack Health problems

Diabetes

Obesity Figure 4

Explain how Annisya can help her father overcome his health problems. Your answer should include the following:

i. Identify the problems [1 mark] ii. Explain the problem [2 marks] iii. Solving method [1 mark] iv. Suggest steps to improve the health problems [2 marks]

II 12. (a) State four differences between continuous variation and discontinuous variation.

[4 marks]

Variation among human being

Size of body

Study the above variation. Explain how you would develop a concept based on the information in figure. Your answer should be based on the following aspects:

i. Identify two common characteristic of continuous variation





ii.



iii. Give other examples and non-examples in relation to the concept



iv.





[2marks]

Develop an initial concept of the continuous variation



[1 mark]

[2 marks]

Explain the actual concept

[1 mark]

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Weight

Height

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(b) Diagram shows some example of variation among human beings.



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