Question 1

1. Which is of the following is NOT part of the human circulatory system?

Accepted Answer

C.   Lungs

Answer

D.   Artery

Answer

A.   Vein

Answer

B.   Heart

Question 2

2. An unknown organism has 36 chromosomes in its lung cell. How many chromosomes does it have in its sex cells?

Accepted Answer

B.   18

Answer

C.   36

Answer

D.   72

Answer

A.   9

Question 3

3. Which of the following is NOT a characteristic of a red blood cell?

Accepted Answer

C. It carries nutrients to all body parts

Answer

A. It cannot self-divide

Answer

B. It contains hemoglobin

Answer

D. It transports oxygen around the body

Question 4

Which of the following describes the blood vessel that carries blood from the liver to the heart correctly?

Accepted Answer

B. It carries deoxygenated blood

Answer

A. Its cell is one-cell thick

Answer

D. It carries blood that has equal amounts of oxygen and carbon dioxide

Answer

C. It carries oxygenated blood

Question 5

Which two systems are involved in the removal of carbon dioxide from the body?

Accepted Answer

D. Circulatory and respiratory systems

Answer

C. Circulatory and excretory systems

Answer

A. Digestive and excretory systems

Answer

B. Digestive and respiratory systems

Question 6

Plasma is a component of blood. Which of the following statements about plasma is incorrect?

Accepted Answer

A. It transports oxygen around the body

Answer

C. It transports amino acids around the body

Answer

B. It transports glucose around the body

Answer

D. It transports mineral salts around the body

Question 7

Which of the following about diffusion is incorrect?

Accepted Answer

B. It is the overall movement of water molecules only

Answer

A. It can occur through a selective membrane

Answer

C. It allows ink molecules to move and spread throughout the water

Answer

D. It involves the movement of molecules from a region of higher concentration to a region of lower concentration.

Question 8

Which of the following about the cell wall of a plant is correct?

Accepted Answer

It allows all substances to pass through it

Answer

It allows some substances to pass through it.

Answer

It allows large substances to pass through it

Answer

It allows no substances to pass through it.

Question 9

A student had a meal that consisted of egg whites. Which of the following is the main product of digestion from the meal?

Accepted Answer

D. Amino Acid

Answer

B. Glycerol

Answer

A.Glucose

Answer

C. Fatty Acid

Question 10

Which of the following activities will most likely NOT cause food poisoning?

Accepted Answer

C. Washing hands with soap before handling food

Answer

B. Eating fruits without washing them with water

Answer

A. Eating raw oyster

Answer

D. Handling meat and vegetables with the same knife.

Question 11

Which of the following will result in the production of amino acids?

Accepted Answer

B. Mixture of protease and egg white

Answer

C. Mixture of carbohydrate and starch

Answer

A. Mixtureof protease and starch

Answer

D. Mixture of carbohydrates and egg white

Question 12

An equal number of identical potato strips were placed in a salt solution and in distilled water. Which of the following best describes the result?

Accepted Answer

D. The length of the potato strips decreased in the salt solution but increased in distilled water.

Answer

C. The length of the potato strips increased in the salt solution but decreased in distilled water.

Answer

A. The length of the potato strips increased in both the salt solution and distilled water

Answer

B. The length of the potato strips decreased in both the salt solution and distilled water

Question 13

Study the diagram below on the movement of perfume molecules.

Which of the following describes such movement correctly?

Accepted Answer

D. It occurs from a region of higher concentration to a region of lower concentration.

Answer

B. It occurs without the presence of a partially permeable membrane.

Answer

A. It requires the presence of a partially permeable membrane

Answer

C. It occurs from a region of lower concentration to a region of a higher concentration

Question 14

Earthworms help plants to grow well in the soil. Which of the following best explains why adding salt to the soil can kill the earthworm?

Accepted Answer

A. Water will leave the cell of the earthworm via osmosis

Answer

B. Water will leave the cells of the earthworms via diffusion

Answer

D. Water will move from a region of higher concentration to a region of lower concentration and enter the cells of the earthworm.

Answer

C. Salt will move from a region of higher concentration to a region of lower concentration and enter the cells of the earthworm.

Question 15

In an experiment, four potato strips were immersed in four salt solutions of different concentrations. The mass of each potato strip was measured before and after the experiment. The table below shows the results.

Which of the salt solutions has the highest water concentration?

Accepted Answer

Y

Answer

W

Answer

X

Answer

Z

Question 16

Two samples of red blood cells were placed in two separate sugar solutions. The results are shown below:

In which solutions were the blood samples most likely placed?

Accepted Answer

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Answer

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Answer

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Answer

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Question 17

Which of the following pairs of routes carry deoxygenated blood?

Accepted Answer

B. From the heart to the lungs, from the kidneys to the heart

Answer

D. From the lungs to the heart, from the kidneys to the heart.

Answer

C. From the lungs to the heart, from the heart to the kidney

Answer

A. From the heart to the lungs, from the heart to the kidneys

Question 18

The table below shows the amounts of nutrients found in a type of food.

In which part of the human digestive system is the food mainly digested?

Accepted Answer

C. Small intestine

Answer

D. Large intestine

Answer

B.   Stomach

Answer

A.   Mouth

Question 19

Which digestive enzyme is found in gastric juice?

Accepted Answer

B. Protease

Answer

A.   Lipase

Answer

D. Carbohydrates

Answer

C.   Amylase

Question 20

Which of the following is an example of cross-examination?

Accepted Answer

B. Bacteria pass from dirty utensils to food

Answer

C. Cooked food left at room temperature for a long time

Answer

D. Cooked food is left in the open and is not covered with a food cover.

Answer

A. Bacteria on flies are transferred to food

Question 21

Mrs. Tan made some seafood fried rice and left it on the kitchen top for several hours. Why is this NOT advisable?

Accepted Answer

A. Bacteria reproduce quickly

Answer

B. There are many types of bacteria

Answer

D. Bacteria come in different shapes and sizes

Answer

C. Bacteria may not be seen by the naked eye

Question 22

Why is it important to cook raw food properly before consuming it?

Accepted Answer

A. Bacteria are found in raw food

Answer

C. Dirty utensils may pass bacteria to the raw food

Answer

D. Bacteria reproduce quickly at room temperature

Answer

B. Flies may transfer bacteria to the raw food

Question 23

Symptoms of food poisoning may take a longer time to appear. Which of the following statements BEST explains this?

Accepted Answer

D. There is an insufficient number of bacteria present in the intestine initially

Answer

C. The strength of bacteria was not strong enough

Answer

B. food poisoning is not caused by bacteria

Answer

A. The bacteria did not enter the body

Question 24

Which of the following about STIs is correct?

Accepted Answer

A. AIDS is a viral infection

Answer

D. AIDS, syphilis, and, gonorrhea are viral infection

Answer

B. AIDS and syphilis are viral infections

Answer

C. Syphilis and gonorrhea are viral infections

Question 25

The Human Immunodeficiency Virus attacks the ___________ system

Accepted Answer

Immune

Answer

Excretory

Answer

Digestive

Answer

Circulatory

Question 26

Which of the following is NOT a feature that helps the cactus to survive in the desert?

Accepted Answer

D. Bears flowers

Answer

C. Sharp spines

Answer

B. Thick stem

Answer

A. Waxy skin

Question 27

In flowering plants, the xylem and phloem form the _____ bundles

Accepted Answer

A. Vascular

Answer

C. Movement

Answer

D. Circulatory

Answer

B. Transport

Question 28

A food chain is shown below. Which of the following will most likely NOT happen if a deadly disease infects the population of mynah?

Plant ---> Caterpillar ---> Mynah ---> Snake

Accepted Answer

B. The population of snakes increases

Answer

D. The population of caterpillars increases

Answer

A. The population of plants decreases

Answer

C. The population of mynahs decreases

Question 29

Study the food chain below. Which organism receives the least amount of energy?

Plant ---> Caterpillar ---> Lizard ---> Snake

Accepted Answer

B.   Snake

Answer

A.   Plant

Answer

D. Caterpillar

Answer

C.   Lizard

Question 30

Which of the following is unlikely to be found in a warm habitat?

Accepted Answer

B. Arctic fox

Answer

D. Porcupine

Answer

A. Crocodile

Answer

C. Kingfisher

Question 31

Study the table below about an ecosystem. What ecosystem is this?

Accepted Answer

C. Mangrove swamp

Answer

D. Tropical rainforest

Answer

B.   Desert

Answer

A.   Farm

Question 32

Which of the following is NOT a food producer?

Accepted Answer

B. Toadstool

Answer

C. Morning glory

Answer

D. Bird’s nest fern

Answer

A.   Grass

Question 33

Which of the following is NOT a reason for conservation?

Accepted Answer

D. Increase the supply of carbon dioxide

Answer

C. Preserve extinction of organisms

Answer

B. Preserve natural resources

Answer

A. Increase the supply of food

Question 34

Which soil conditions are the most suitable for earthworms to live in?

Accepted Answer

B. Dark and moist

Answer

D. Bright and moist

Answer

A. Dark and dry

Answer

C. Bright and dry

Question 35

Why is carbon monoxide harmful?

Accepted Answer

A. It can suffocate us

Answer

B. It can hurt our eyes

Answer

D. It can cause plants to grow poorly

Answer

C. It can damage buildings

Question 36

Which of the following about power is correct?

Accepted Answer

B. It is the amount of electrical energy an electrical appliance converts to other forms of energy in one second.

Answer

D. It is the amount of electrical energy an electrical appliance converts to other forms of energy in one hour.

Answer

A. It is the amount of heat energy an electrical appliance converts to other forms of energy in one second.

Answer

C. It is the amount of electrical energy an electrical appliance converts to other forms of energy in one minute.

Question 37

Which of the following statements about a fuse is INCORRECT?

Accepted Answer

D. It is a short length of wire that breaks when the current is too small

Answer

C. It protects electrical components from damage

Answer

A. It is found in electric plugs

Answer

B. It prevents electric shocks and fires

Question 38

A large supply of electric current is flowing through an electrical appliance. Which feature will turn off by itself to prevent electric shocks and fires

Accepted Answer

D. Circuit breaker

Answer

B. Main Switch

Answer

C. Electrical plug

Answer

A. Earth wire

Question 39

What is the unit of frequency?

Accepted Answer

B.  Hertz

Answer

D.   Newton

Answer

C.   Decibel

Answer

A.   Ohm

Question 40

An object has a mass of 280g on earth. Which of the following statements about its mass on the moon is correct?

Accepted Answer

A. Same as 280 g

Answer

D. Cannot be determined

Answer

B. Less than 280 g

Answer

C. More than 280 g

Question 41

Which of the following about the mass of the object is correct?

Accepted Answer

C. The mass of an object is the same regardless of its location.

Answer

A. Unit of mass is newton

Answer

D. The mass of the object on the moon is about 1/6 of that on Earth.

Answer

B. It is the measure of the force of gravity exerted on an object

Question 42

Grease is added to the parts of a bicycle to reduce _______ force.

Accepted Answer

B. Frictional

Answer

D. Gravitational

Answer

A. Magnetic

Answer

C. Destructive

Question 43

A car travels at an average speed of 84 km/from Town X to Town Y. The distance between Town X and Town Y is 400 km. What is the time for a car to travel from Town X to Town Y if it rests for an hour during the journey?

Accepted Answer

C. 5 16/21 hours

Answer

A. 3 16/21 hours

Answer

B. 4 16/21 hours

Answer

D. 5 21/16 hours

Question 44

The Richter scale helps to measure the strength of a/an ________.

Accepted Answer

D. Earthquake

Answer

B.   Typhoon

Answer

C.   Tsunami

Answer

A.   Volcano

Question 45

Which of the following about energy is correct?

Accepted Answer

C. Tidal energy is a renewable source of energy

Answer

D. Energy is the use of a force to move an object

Answer

B. The only source of energy is from the sun

Answer

A. Energy can be created or destroyed.

Question 46

The diagram on the right shows an archer pulling a bow and an arrow. Which of the following shows the correct energy transfer?

Accepted Answer

A. Chemical potential energy ----> Kinetic energy

Answer

D. Gravitational potential energy ----> Chemical potential energy

Answer

C. Chemical potential energy ----> Gravitational potential energy

Answer

B. Gravitational potential energy ----> Kinetic energy

Question 47

Which is considered to be wasted energy when we turn on a light bulb?

Accepted Answer

A. Heat energy

Answer

D. Electrical energy

Answer

B. Light energy

Answer

C. Chemical energy

Question 48

Which of the following pairs of conditions is needed for work to be done?

I. A force is acting on the object

II. No force is acting on the object

III. The object moves in the same direction as the force

IV. The object moves in the opposite direction as the force

Accepted Answer

A. I and III

Answer

D. II and IV

Answer

C. II and III

Answer

B. I and IV

Question 49

Which of the following about tidal energy is incorrect?

Accepted Answer

C. It can be harvested at all times

Answer

D. It is a renewable source of energy

Answer

B. It does not cause air pollution

Answer

A. It helps to produce energy

Question 50

Which of the following is renewable energy?

Accepted Answer

Wood

Answer

Coal

Answer

oil

Answer

Natural gas

Question 51

Which of the following can cause air pollution?

Accepted Answer

Biomass

Answer

Wind energy

Answer

Tidal Energy

Answer

Geothermal energy

Question 52

Edmond uses a great amount of strength to push a car but it does not move. Which of the following best describes what had happened?

Accepted Answer

C. A force is exerted but no work is done

Answer

B. A force is exerted and work is done

Answer

D. No force is exerted and no work is done

Answer

A. Work is done but cannot be seen

Question 53

Which of the following about sound is incorrect?

Accepted Answer

B. Sound cannot travel through a medium

Answer

D. Echolocation is the use of sound to find an object.

Answer

C. A high-pitched sound has a high frequency

Answer

A. Light travels faster than the sound

Question 54

Which of the following is a function of echolocation?

Accepted Answer

B. To measure the depth of the sea

Answer

A. To treat kidney stones

Answer

C. To examine a baby in the uterus

Answer

D. To detect abnormalities in our body

Question 55

Which of the following is NOT a function of ultrasound?

Accepted Answer

B. To warn us when we are in pain

Answer

D. To check a baby in the mother’s uterus

Answer

A. To detect problems in the heart

Answer

C. To detect kidney stones in the body

Question 56

Which of the following noises can cause damage to the ears due to continuous exposure?

Accepted Answer

C. R and S only

Answer

D. P, R, and S only

Answer

A.   R only

Answer

B. P and only

Question 57

1. Which two of the following statements about loud and soft sounds are correct?

I. Loud sounds have less energy than soft sounds

II. Loud sounds have more energy than soft sounds

III. Loud sounds have larger vibration than soft sounds

IV. Loud sounds have smaller vibrations than soft sounds.

Accepted Answer

C. II and III

Answer

B. I and IV

Answer

A. I and III

Answer

D. II and IV

Question 58

Which of the following is NOT a way to reduce noise?

Accepted Answer

C. Standing near a rock band

Answer

B. Wearing ear protector

Answer

D. Using triple-glazed windows

Answer

A. Using curtains

Question 59

What part of the human ear helps to magnify the vibrations?

Accepted Answer

middle ear

Answer

Eardrum

Answer

Inner Ear

Answer

Outer ear

Question 60

Which of the following shows an example of increasing pressure by reducing the surface area in contact?

Accepted Answer

D. A footballer wearing a pair of studded boots

Answer

C. An excavator working in a working site

Answer

B. A camel walking on the sand

Answer

A. A skier in the snow

Question 61

What product can be obtained from sugarcane?

Accepted Answer

alcohol

Answer

Coal

Answer

Petrol

Answer

Natural gas

Question 62

Hot springs provide ____ energy

Accepted Answer

Geothermal

Answer

Solar

Answer

Hydrothermal

Answer

Tidal

Question 63

In which medium does sound travel the slowest?

Accepted Answer

Oxygen

Answer

Glass

Answer

water

Answer

Wood

Question 64

Which of the following about keeping the Earth warm is correct?

Accepted Answer

D. The heat in the atmosphere spreads around the Earth by convection

Answer

B. The solid ground conducts heat into the atmosphere

Answer

C. Heat is transferred by convection through the solid ground

Answer

A. Air around the land and sea is warmed by radiation

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