ujian 12012

ARAHAN : 1. JAWAB SEMUA SOALAN DALAM KERTAS SOALAN 2. BOLEH MENJAWAB DALAM BAHASA MELAYU ATAU

BAHASA INGGERIS

BAHAGIAN A

1. The diagram shows a neuron.

What is labeled X?A AxonB DendriteC DendronD Myelin sheath

2 The diagram shows a part of the human nervous system.

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SMK KUALA REPAS28700 BENTONGUJIAN 1SAINS TINGKATAN 5 2012

What is labeled S?

A Cerebrum B Cerebellum C Spinal cord D Medula oblongata

3 The diagram shows the endocrine glands. Which of the following glands A, B, C or D is the pancreas?

4 The figure shows one of the human endocrine glands.

What is the immediate effect on a person if the gland is removed?

A The blood pressure increases B The metabolic rate becomes low C The blood sugar level increases D The secondary sex characteristics are not developed

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5 The diagram shows an impulse pathway.

Which of the following actions involves the impulse pathway?

A Swallowing foodB Dancing with musicC Walking on the tight ropeD Blinking of the eyes to protect from dust

6. Which of the following activities is not controlled by cerebrum?

A Movement of limbs B Breathing C Memory

D Sight

7 The diagram shows the different phases in cell division in mitosis.

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Which is the correct sequence in the mitosis?

A P, Q, R, SB Q, R, P, SC R, S, Q, PD S, P, R, Q

8. Which of the following is an example of a discontinuos variation?

A Height B Skin colour C Body weight D Blood group

9. The chromosomes present in the male skin cells are

A 22+ YB 22+XC 44 + XXD 44 + XY

10. The figure shows the breeding of two different type of papaya

Papaya P X Papaya Q ● Has thick flesh ●Slightly thick flesh ● Tastes sweet ●Bigger fruit ● Small fruit ●Ripens simultaneously

Papaya R

The breeding of these papayas is to produce

A plenty of papaya RB sweeter papaya RC a papaya R tree that bears fruit earlierD a papaya R tree that is resistant to disease

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11 Based on the table, which elements are isotopes?

Elements

Nucleon number

Number of protons

Number of nuetron

E 12 6 6G 13 6 7J 14 7 7L 16 8 8

A. E and G B. G and J C. J and L D. E and L

12 Based on the periodic table, which element represents a metal?

A II B IV C VI D VIII

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I

II III IV V VI VII

VIII

Group

13 Uses of the electrolysis in industries are

I metal refiningII metal extractionIII metal electroplating

A I and II onlyB I and III onlyC II and III onlyD I, II and III

14 Diagram 1 shows a reaction between metal and dilute acid.

Diagram 1

What is gas X?

A oxygenB nitrogenC hydrogenD carbon dioxide

15 What type of battery used in a car?

A Dry cellB mercury oxide batteryC nickel-cadmium batteryD acid-lead accumulator

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16 Which element is used as a source of energy in a nuclear reactor?

A Cobalt-60B Carbon-14C RadiumD Uranium-235

17 What is the best container to keep radioactive substances?

A steel containerB plastic containerC lead containerD aluminium container

18 Which type of radiation is used to cure cancer?

A BetaB AlphaC GammaD Ultra-violet

19 The diagram shows the reproduction of a microorganism.

What is the method of this reproduction ?

A. BuddingB. Binary fissionC. ConjugationD. Spore formation

20 Which disease is spread by houseflies ?

A. DengueB. CholeraC. MalariaD. Hepatitis B

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21 Which is an effective method to prevent ringworm ?

A. InjectionB. SterilizationC. Vector controlD. Personal hygiene

22 Which of the following microorganisms are considered producers ?

A. FungiB. BacteriaC. AlgaeD. Protozoa

23. Which of the following statements is true about vector ?

A. Vector is an insect that causes diseases.B. Vector is an animal for microorganisms host.C. Vector is an animal that carries out a pathogen from one host to another

host.D. Vector is an animal that can be infected by microorganisms.

24 Boiled water still contain bacteria because boiling

A. stimulates the growth of bacteriaB. removes chlorine in the waterC. cannot destroy the spores of bacteriaD. cannot kill active bacteria

25 Which of the following are the factors that affects total the calories required by an individual?

ageII body sizeIII thinking ability

A I and II onlyB I and III onlyC II and III onlyD I, II and III

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26 Which of these elements required by plants is a macronutrient?

A IronB ZincC CopperD Nitrogen

27 The table below shows the diseases resulted from unhealthy eating habits

Source DiseaseExcess of

XArteriosclerosis

Excess of Y

Diabetes

Excess of Z High blood pressure

X Y Z

A Cholesterol Sugar SaltB Cholesterol Salt SugarC Salt Sugar CholesterolD Sugar Cholesterol Salt

28 A woman constantly reduces her food intake so that her body remains slim. If this condition continues for a long period of time, she may suffer from

A strokeB obesityC anorexia D high blood pressure

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BAHAGIAN B

1 Figure 2 shows the endocrine system of man.

FIGURE 2

(a) (i) Name gland R.

…………………………...………………………………………………

[1 mark](ii) What will happen to the man if gland R secretes less

hormone?

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

(b) (i) Name gland S.

…………………………………………………………………………[1 mark]

(ii) State one function of the hormone secreted by gland S.

…………………………………………………………………………[1 mark]

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2 Diagram 1 shows the energy requirements of males and females.

(a) (i) Based on the graph in Diagram 1, state one factors that affect the calories requirement of an individual.

…………………………………………………………………………[1 mark]

(ii) State one other factor that affect the calories requirement of an individual.

………………………………………………………………………[1 mark]

(b) Why male teenagers require more calories compare to male adults?

………………………………………………………………………….[1 mark]

(c) Suggest a class of food that is needed by the male teenagers.

………………………………………………………………………[1 mark]

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5000

10000

15000

20000

Male(Teenagers)

Female(Teenagers)

Male(Adults)

Time (Day)

Energy (kJ)

(d) Estimate the amount of calories that is needed by the pregnant women.

…………………………………………………………………………[1 mark]

(e) What may happen to a female teenager if food is taken in excess?

…………………………………………………………………………[1 mark]

BAHAGIAN C

1 Diagram 12.1 and Diagram 12.2 show the different safety features of two vehicles.

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Study Diagram 12.1 and Diagram 12.2. Based on the safety features, choose the most suitable vehicle for your own use.

Kaji Rajah 12.1 dan Rajah 12.2. Explain your choice based on the following: • Aim of choice. • Comparison between the safety features of the two vehicles. • Choose the best vehicle according to its safety features.

• State one safety feature of the vehicle that you have chosen and explain its uses.

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