Est K2 Pahang 2008

SULIT 6355/2 English for Science and Technology Kertas 2 SEPT 2008 1 jam

JPN PAHANG PEPERIKSAAN PERCUBAAN SPM TAHUN 2008 TINGKATAN 5

ENGLISH FOR SCIENCE AND TECHNOLOGY (EST) Kertas 2 Satu jam

JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU Arahan 1. 2. 3. 4.

Kertas soalan ini mengandungi 30 soalan. Jawab semua soalan. Hitamkan semua jawapan anda di dalam kertas jawapan objektif yang disediakan. Soalan-soalan yang dikemukakan dalam kertas soalan ini mungkin mempunyai tiga atau empat pilihan.

Instructions 1. 2. 3. 4.

The question paper consists of 30 questions. Answer all questions. Shade all your answers on the objective answer sheet provided. Questions in this question paper might have three or four options.

Kertas ini mengandungi 16 halaman bercetak.

6355/2

SULIT

1

Questions 1 – 25 are based on the given stimuli. Study the information carefully and choose the best answer. Question 1 A space shuttle is a spacecraft that can fly into space and back to Earth many times. It can launch space satellites, conduct space probes and take astronauts to space stations. A space shuttle has several parts, including the shuttle orbiter, large fuel tanks and two booster rockets.

1

A space shuttle has these parts except A

fuel tanks

B

space probes

C

shuttle orbiter

D

booster rockets

Question 2 Organism

Examples

General Size

Particle Size Rating

Protozoa

Giardia, Cryptosporidium

5 microns or larger

1.0 – 4.0 microns

Bacteria

Cholera, E. coli, Salmonella

0.2 – 0.5 microns

0.2 – 1.0 microns

Virus

Hepatitis A, rotavirus, 0.004 microns Norwalk virus

2

0 to 0.004 microns

Which of the following is the largest micro-organism? A

Protozoa

B

Bacteria

2

C

Virus

Question 3 Rainwater contains dissolved gases and dust. Rivers and lakes contain dissolved and decaying substances, microorganisms and mud. Seawater contains dissolved substances, especially common salt. It is highly contaminated with all sorts of pollutants. It is the most polluted of the three. 3

Which of the following words best replace the word decaying? A

dying

B

polluting

C

rotting

Question 4 Balanced Diet A balanced diet is one which contains the correct proportions of all the different food requirements of the body. This balanced diet should supply enough energy for each day’s activities. A balanced diet consists of the following food requirements: (a)

Carbohydrates and lipids to provide energy for all the activities in the body.

(b)

Proteins to build new tissues for growth and repair damaged or dead tissues.

(c)

Vitamins to prevent diseases and for normal healthy development.

(d)

Mineral salt which are essential for normal healthy growth and development.

(e)

Fibres as roughage to stimulate peristalsis and prevent constipation.

(f)

Water which is needed as the medium for all chemical reactions in the cells.

It helps to transport substances that are needed by the cells and

remove metabolic waste. It also helps to distribute and regulate body heat.

3

4

Which class of food is necessary for body tissues? A

Fibres

B

Proteins

C

Vitamins

D

Carbohydrates

Question 5 The Sun’s heat causes water to evaporate.

5

Based on the statement above, the following statements are true except A

Raindrops form when clouds meet warm air

B

Water from lakes turns into vapour on a very hot day

C

Eyeglasses cloud up when someone enters a warm room from the cold

Question 6 Compared to other high-altitude unmanned aerial vehicles, the airship HAA should be able to carry a heavy payload; its 4000 pound capacity makes it ideal for carrying heavy surveillance and communication equipment. Another big advantage: HAA’s solar panels and fuel cells will allow it to loiter above the jet stream in a geostationary position for up to a year, something no drone or spy plane can do.

6

From the text given, we can conclude that the HAA A

is a jet plane

B

is a spy plane

C

is a pilotless airship

D

weighs 4000 pounds

4

Question 7 Fungi comprise many types of microorganisms such as mould, mushrooms, toadstools and yeast. They can be found in every environment. Fungi cannot produce their own food. Therefore, they live either as parasites on living things or as saprophytes feeding on the remains of dead animals and plants.

7

According to the text, a saprophyte A

is a parasite

B

is a type of fungus

C

feeds on living things

D

lives on dead plants and animals

Question 8 There are several theories as to why the ocean is usually ‘blue’. Some scientists believe that when sunlight hits seawater, part of the white light is absorbed and part is reflected. White light is composed of all the colours in the rainbow. Seawater does not absorb blue light, so the blue light is reflected outwards. Some scientists believe that suspended matter in the sea is responsible for its blue colour. 8

The ocean is usually ‘blue’ because A

that is its natural colour

B

the blue light is reflected inwardly

C

some substance in the ocean causes it

5

Question 9

empty

sand

A

B

Figure 2.19

Figure 2.19 shows two similar tins being suspended from the ceiling by long strings. Tin A is empty while tin B is partially filled with sand. Tin B is found to be harder to move compared to tin A when both the tins are given a short sharp push of the same strength. Tin B is also found to continue swinging over a longer period of time compared to tin A. 9

Based on the demonstration above, we can conclude that A

the greater the mass of an object, the easier its ability to start moving.

B

the greater the mass of an object, the easier its ability to stop moving.

C

the larger the mass of an object, the larger its ability to resist change.

D

the larger the mass of an object, the smaller its ability to resist change.

6

Question 10 There is always the danger that one day an asteroid might heat the earth. If this happens it will cause great devastation to the planet.

10

The word ‘devastation’ means A

preservation

B wreckage

C

phenomenon

D obscurity

Question 11 A laser beam inside a CD player reads or processes about 20 000 of these digits every second, which are then converted back into sound signals.

11

Sound is imprinted on a CD as A

signals

B

sounds

C

digits

D

laser beams

Question 12 Pasteurization of milk improves the storing quality of milk and milk products and at the same time can destroy some undesirable enzymes and many spoilage bacteria. It is done by heating every particle of milk or milk product to a specific temperature for a specified period of time without allowing recontamination of that milk or milk product during the heat treatment process.

12. One of the sentences below best explains pasteurization of milk. A. It lowers the milk’s pH. B. It enhances the taste of milk. C. It reduces the bacteria population in the milk. D. It improves the keeping quality of milk besides killing most bacteria.

7

Question 13

Viruses do not reproduce like other organisms. They can only replicate within a living cell, which is called a host cell. They manufacture replicas of themselves using parts ‘borrowed’ from the host cells. When they replicate, many viruses kill the host cell.

13

In order to replicate, viruses A B C D

have to kill the host cell. need to have a living cell. should manufacture body parts. need to borrow DNA from the host cells.

Question 14 Numerical system to classify the extent of occurrence of cancer. Stage 0 Cancer in situ ( limited to surface cells ) Stage I Cancer limited to the tissue of origin, evidence of tumour growth Stage II Limited local spread of cancerous cells Stage III Extensive local and regional spread Stage IV Distant metastasis 14

When a person is diagnosed with cancer in Stage O it means that A

the cancer has affected the immediate surrounding cells.

B

only the surface cells have been affected by cancer.

C

the tumour is growing on the surface cells.

D

the cancer cannot be treated.

8

Question 15 An eclipse of the sun is an occasion when the moon is between the earth and the sun, so that for a short time you cannot see part or all of the sun. An eclipse of the moon is an occasion when the earth is between the sun and the moon, so that for a short time, you cannot see part or all of the moon.

15

Which of the following statements is true? A

The Sun is never blocked by the Moon during a solar eclipse

B

The Moon comes between the Sun and the Earth during a lunar eclipse

C

The solar eclipse is more spectacular because both the Moon and Earth experience night time

D

A lunar eclipse occurs when the Earth passes between the Sun and the Moon, blocking the Sun’s light.

Question 16 Jack Kilby, the American scientist, invented the first monolithic integrated circuit in 1958. Kilby’s microchip was to the information age as what steam power was to the Industrial Revolution. It made it possible to incorporate a roomful of equipment into a device that could be held in the palm of the hand. This drove the space programme, revolutionized military technology and spawned a multibillion-pound industry.

16

Which of the following is true about microchip? A

It is a palm-sized electronic tool

B

It brought a change from Industrial Revolution to information age

C

It can include many electronic devices and incorporate information into the devices

D

It is a tiny computer chip that is widely used in space, military technology and other industries

9

Question 17 The human brain consists of three main parts; cerebrum, cerebellum and medulla oblongata. Cerebrum is the largest part of the brain. It controls all mental activities such as thinking, intelligence, memory, learning, reasoning and problem solving. It is divided into two hemispheres; right and left hemispheres. The right hemisphere controls all the activities on the left side of the body while the left hemisphere controls all the activities on the right side of the body. The Cerebellum is located on the posterior end of the cerebrum. Its surface is folded. It coordinates the contraction of muscles and controls the equilibrium of the body. Medulla oblongata is located in front of cerebellum. It links brain to the spinal cord. It controls and regulates involuntary actions such as the rate of heartbeat, peristalsis, blood pressure, breathing and the variation in the size of blood vessels during vasodilation or vasoconstriction.

17

Based on the above extract, which of the following statements are true? I

The reaction of both hemispheres in cerebrum functions inversely proportional to each other.

II

Cerebellum controls the balance of the body.

III

Medulla oblongata controls the body temperature.

A

I only

B

I and II

C

I, II, and III

10

Question 18 Translucent microscopic beads are injected into the bloodstream using a catheter that is threaded through the patient’s thigh artery up to the uterus. Like tiny marbles tumbling through a pipe, the beads travel upstream to the fibroid, where they wedge in the vessel, blocking blood flow. Over time, the fibroid shrinks and falls away.

18

From the text above, we know that it is a description of a A

thigh treatment

B

fibroid treatment

C

uterus treatment

D

blood clotting treatment

Question 19 Many of our daily actions involve forces. When things are pushed or pulled, a force is exerted on the object. An example of everyday force at work is pushing a chair.

19

From the followings, choose examples of everyday force at work. I

Opening a door

II Closing a drawer III Bending a ruler IV Tapping on a keyboard A I, II

B II, III

C I, III, and IV

11

D All of the above

Question 20 The human digestive system comprises of parts of the alimentary canal which are mouth, stomach, duodenum and illeum. Food is chewed by the teeth into small particles to increase surface area for the action of enzymes. In the stomach, gastric glands in the wall of the stomach secrete gastric juice. Gastric juice contains hydrochloric acid, and the enzymes pepsin and rennin. The duodenum is the first part of the small intestine. The duodenum does not have glands to secrete digestive juice. The rest of the small intestine after the duodenum is the illeum. The walls of the illeum contain many intestinal glands which

secrete

intestinal

juice. The

intestinal

juice

is

alkaline

and

enzymes to complete the digestion of carbohydrates, proteins and lipids.

20

Based on the diagram, which part of alimentary canal in human digestive system has optimum PH condition of 1.5?

A

C B

D

12

contains

Question 21 Water can also become unfit for consumption due to leachates, that is when something leaches from the container into the water. One extreme example is water in a lead container. Lead leaches into water and contaminates it. It is important therefore, to ensure that the container in which water is stored is made from a food grade material to prevent leaching problems. Glass, stainless steel and some plastics are good examples of such materials.

21

Which of the following best replaces the word consumption? A

drinking

B

comprising

C

composing

Question 22 Infections in Human Beings Way of infection Droplets of saliva, mucus in the air Contaminated water Contaminated water By contact and sharing of things Mosquito bite Mosquito bite 22

Microorganisms Virus Bacteria Protozoa Fungus Protozoa Virus

Disease Colds, flu, fevers Cholera Dysentry Ringworm Malaria Dengue fever

Infection of Dengue fever is different from Malaria in that A

Dengue fever is caused by protozoa while Malaria is caused by virus.

B

Dengue fever is caused by virus while Malaria is caused by protozoa.

C

both Malaria and Dengue fever are caused by viruses spread by mosquito bite.

D

Malaria is spread by mosquitoes while Dengue fever is caused by contaminated water.

13

Question 23 Using Folder Guard Pro is a breeze. To enable protection for a folder, simply right-click on the item and choose access level from the menu. If you do not want to protect it with the master password, you can select an unlocking password just for that item. You can protect almost any aspect of the Windows interface, whether you want to remove the Shut Down and Restart commands from the Start menu, disallow the Log Off command, disallow the Run command, or prevent users from changing the location of the Taskbar. You can also lock down nearly any feature in Internet Explorer and prevent others from browsing any drive.

23

By using Folder Guard Pro, you can A

retrieve any password

B

lock down features in the Internet Explorer

C

prevent others from switching on the computer

Question 24 Mercury enters the environment through natural sources such as volcanoes and the weathering of rocks. From the atmosphere, it is brought down by rain into ponds, lakes or rivers. Mercury is absorbed by plankton and small fishes, to be consumed by bigger fishes which finally end up on our dinner plates. Mercury, in its most toxic form, methyl mercury collects in the muscle and flesh of fish and is toxic to the human nervous system, the brain.

14

The following diagram is based on the text above.

24

The best description for Stage 6 in the picture is A

Mercury attacks fish bones.

B

Mercury poisoning in humans.

C

Mercury is an environment threat.

D

Mercury changes to methyl mercury.

Question 25 Chocolate is any product based 99 per cent on cocoa solid and / or cocoa fat. Recent research has shown that cocoa or dark chocolate has health benefits for people. Dark chocolate is full of flavonoids – epicatechin and gallic acid. These are antioxidants that help protect blood vessels, promote cardiac health and prevent cancer. Mild hypertension too can be counteracted. It has been proven that other antioxidant-rich food such as green and black tea has less flavonoids than dark chocolate.

25

All the statements below indicate evidence that dark chocolate has health benefits for people except A

it contains high calorific content of saturated fat.

B

antioxidants in it helps to avoid cancer

C

it has more flavonoids than green tea

15

Questions 26 – 30 are based on the following passage. All Infra Red (IR) remote controls use some kind of IR __26__. The remotes transmit pulses of IR light to send the signal to the receiver. These IR LEDs transmit light in the frequency range of 30 KHz to 40 KHz. These high frequencies were __27__ so that other light sources would not interfere with the receivers ability to correctly receive the transmitted signals. These signals are ___28___ by the IR LED in some type of binary code. It turns out that for most electronic consumers, this coding is the same. The binary signal varies in length for both time and bit length. There are only three different ___ 29___ that manufacturers choose to code these signals. This coding is usually based on varying the length of ____30____, varying the length of spaces between pulses or altering the order between spaces or pulses.

26

A B C D

track signal motion indicator

29

A B C D

ways customs conduct methods

27

A B C

choose chosen choosing

30

A B C D

beat throb thump pulses

28

A B C D

attached released connected transmitted

KERTAS SOALAN TAMAT

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