Cambridge IGCSE Science - Combined 0653 — 2015 May/June Paper 1 · Variant 1

Question 1

1 A biologist keeps a potted plant in a laboratory. Which feature of the potted plant shows that it is a living organism? A It grows larger over time. B It has green leaves. C The compost in the pot dries after he waters it. D The stems contain xylem.

Accepted Answer

A

Question 2

2 The diagram shows a palisade cell.

Which parts are found in plant cells and not in animal cells?

1 2 3 4 ) 6
A v x v v x x
B v x v x v x
Cc x v x v x v
D x v x x v v

Accepted Answer

C

Question 3

3 Which substances may diffuse into and out of plant cells? into plant cells out of plant cells A chlorophyll oxygen B oxygen water C starch chlorophyll D water starch

Accepted Answer

B

Question 4

4 Proteins that function as biological catalysts are called A enzymes B hormones C solvents D vitamins

Accepted Answer

A

Question 5

5 The diagram shows a section through part of a leaf. X The leaf is photosynthesising in bright light. What enters the leaf at X? A carbon dioxide B light C oxygen D water

Accepted Answer

A

Question 6

6 Diagram 1 shows a water plant exposed to sunlight. diagram 1 What change would take place if a black box is placed over the plant, as in diagram 2, and left for eight hours? diagram 2 A Carbon dioxide production would fall. B Oxygen production would fall. C Stomata would open wider. D Respiration would stop.

Accepted Answer

B

Question 7

7 A tree has lost most of its leaves. How does this affect the rate at which water is taken up by the trees? A Water uptake decreases but does not stop. B Water uptake increases. C Water uptake remains the same. D Water uptake stops.

Accepted Answer

A

Question 8

8 The diagram shows a heart in section and some of its blood vessels. Q R What are the parts Q and R? Q R A aorta septum B aorta vena cava C atrium septum D atrium vena cava

Accepted Answer

C

Question 9

9 Monstera is a climbing plant. Some of its shoots grow away from light, which helps the plant to find support. What is this an example of? A geotropism B photosynthesis C phototropism D respiration

Accepted Answer

C

Question 10

10 A healthy person does not eat for several hours but then has a meal rich in carbohydrate. Which graph shows how the person’s blood sugar level changes after the meal? A B blood blood sugar sugar level level 1 2 1 2 meal meal time / hours time / hours C D blood blood sugar sugar level level 1 2 1 2 meal meal time / hours time / hours

Accepted Answer

A

Question 11

11 The diagram shows a side view of the female reproductive system in a human. 1 2 3 Where do fertilisation and implantation occur? fertilisation implantation A 1 2 B 2 1 C 2 3 D 3 2

Accepted Answer

A

Question 12

12 The diagram shows the thickness of the uterus lining of a woman over a 4-week period. P Q thickness of uterus lining 1 2 3 4 time / weeks What happens at P and Q? P Q A fertilisation ovulation B menstruation fertilisation C menstruation ovulation D ovulation menstruation

Accepted Answer

D

Question 13

13 An oxpecker bird perches on the back of a buffalo while the buffalo feeds on grass. The bird eats ticks that feed on the blood of the buffalo. Which food chain represents these feeding relationships? A grass → buffalo → oxpecker → ticks B grass → buffalo → ticks → oxpecker C oxpecker → ticks → buffalo → grass D ticks → oxpecker → buffalo → grass

Accepted Answer

B

Question 14

14 Which method is used to obtain a solid salt from the salt solution? A crystallisation B distillation C filtration D fractional distillation

Accepted Answer

A

Question 15

15 Fluorine and chlorine are in Group VII of the Periodic Table. Which number increases by eight from fluorine to chlorine? A the number of atoms in one molecule B the number of electrons in one atom C the number of electrons in one molecule D the number of nucleons in one atom

Accepted Answer

B

Question 16

16 The structure of an organic compound is shown. H H H O H C C C C H H H O H What is the formula of the compound? A C3H8O2 B C4H8O C C4H8O2 D C3H7O2

Accepted Answer

C

Question 17

17 Which substances are formed at the electrodes during the electrolysis of aqueous copper chloride? anode cathode A chlorine copper B chlorine hydrogen C copper chlorine D hydrogen copper

Accepted Answer

A

Question 18

18 Sherbet is a mixture of citric acid and sodium hydrogencarbonate. When sherbet is eaten, the chemicals react and cool the tongue. Which word describes this type of reaction? A combustion B crystallisation C endothermic D exothermic

Accepted Answer

C

Question 19

19 The diagram shows equal masses of magnesium added to equal volumes of acid of the same concentration. ribbon powder powder acid at 30 °C acid at 30 °C acid at 40 °C P Q R What is the order of the speed of reaction? fastest slowest A P R Q B Q R P C R P Q D R Q P

Accepted Answer

D

Question 20

20 In the blast furnace, iron(III) oxide reacts with carbon forming iron and carbon monoxide. What happens to the iron(III) oxide? A It is oxidised by gaining oxygen. B It is oxidised by losing oxygen. C It is reduced by gaining oxygen. D It is reduced by losing oxygen.

Accepted Answer

D

Question 21

21 The table shows the results of tests on an aqueous solution of X. test result blue litmus paper turns red aqueous silver nitrate white precipitate formed What is X? A HCl B HNO3 C NaCl D NaOH

Accepted Answer

A

Question 22

22 Which element has similar chemical properties to bromine? A argon B iodine C selenium D sulfur

Accepted Answer

B

Question 23

23 An electrical cable contains a copper wire surrounded by a layer of plastic. Which properties explain why copper and plastic are used in this cable? copper plastic A electrical conductor electrical insulator B high melting point low melting point C no reaction with acids no reaction with acids D shiny surface dull surface

Accepted Answer

A

Question 24

24 A new alloy is resistant to corrosion. It costs about the same as aluminium but it is slightly poisonous. Its density, compared with stainless steel and aluminium, is shown. aluminium new alloy stainless steel density 2.7 2.8 7.9 g / cm3 What is this new alloy used to make? A aircraft frames B cutlery C electrical insulators D food containers

Accepted Answer

A

Question 25

25 The diagram shows an element being added to cold water to form a gas and an alkaline solution. element alkaline bubbles solution cold water element What is the element? A calcium B carbon C copper D sulfur

Accepted Answer

A

Question 26

26 In which test-tube does a chemical change take place most quickly? A B C D air air oil oil boiled water boiled water tap water tap water iron nails copper nails copper nails iron nails

Accepted Answer

D

Question 27

27 Which compound is the main constituent of natural gas? A butane B ethane C methane D propane

Accepted Answer

C

Question 28

28 An athlete runs 10 000 metres in 30 minutes. What is her average speed? A 3 km / hour B 5 km / hour C 10 km / hour D 20 km / hour

Accepted Answer

D

Question 29

29 A shop-keeper places two identical blocks of cheese on a balance. The combined mass of the two blocks of cheese is 240 g. Each block measures 2.0 cm × 5.0 cm × 10.0 cm. 240 g What is the density of the cheese? A 0.42 g / cm3 B 0.83 g / cm3 C 1.2 g / cm3 D 2.4 g / cm3

Accepted Answer

C

Question 30

30 The speed of a car increases as it moves up a hill. Which energy changes are taking place? gravitational energy kinetic energy A decreasing decreasing B increasing decreasing C decreasing increasing D increasing increasing

Accepted Answer

D

Question 31

31 Cold water evaporates as molecules leave it. Which molecules leave the water and from which part of the water do they leave? molecules that where they leave the water leave from A least energetic the surface only B least energetic throughout the water C most energetic the surface only D most energetic throughout the water

Accepted Answer

C

Question 32

32 The table shows the melting points and boiling points of four substances. Which substance is a liquid at a room temperature of 20 °C? melting point / °C boiling point / °C A –101 –35 B –39 357 C 30 2100 D 327 1750

Accepted Answer

B

Question 33

33 Which row is correct? conduction of heat convection of heat A can happen in a solid can happen in a solid B can happen in a solid only happens in liquids and gases C only happens in liquids and gases can happen in a solid D only happens in liquids and gases only happens in liquids and gases

Accepted Answer

B

Question 34

34 A student shakes one end of a long rope up and down. A wave travels along the rope in the direction shown. shaken up and down wave direction along rope a short distance The student now moves the rope up and down through a larger distance. He also shakes it fewer times each minute. Which row shows the effects of these two changes? amplitude of frequency of the wave the wave A decreases decreases B decreases increases C increases decreases D increases increases

Accepted Answer

C

Question 35

35 Which diagram shows a ray of light passing through a glass block in air? A B glass block glass block C D glass block glass block

Accepted Answer

A

Question 36

36 A filament lamp is used in a zoo to keep young animals warm. reflector What are the main types of wave given out by the lamp? A visible light and infra-red B visible light and microwaves C visible light and radio waves D visible light and X-rays

Accepted Answer

A

Question 37

37 A loudspeaker is made to vibrate at four different frequencies. Which frequency cannot produce a sound that a human can hear? A 60 Hz B 600 Hz C 6.0 kHz D 60 kHz

Accepted Answer

D

Question 38

38 A mains circuit can safely supply a current of 40 A. A hairdryer takes 2 A. It is connected to the circuit by a lead which can safely carry up to 5 A. Which fuse should be used to protect the hairdryer? A 1 A fuse B 3 A fuse C 10 A fuse D 50 A fuse

Accepted Answer

B

Question 39

39 A voltmeter and an ammeter are used to determine the resistance of a lamp. Which circuit shows the meters connected to take the necessary measurements? A B A V V A C D V A A V

Accepted Answer

A

Question 40

40 The diagram shows a circuit with four identical bulbs P, Q, R and S. P Q R S Which statement about the brightness of the bulbs is correct? A P is the same brightness as Q. B P is the same brightness as S. C Q is brighter than S. D R is brighter than P.

Accepted Answer

B

Question paper20 pages

Mark scheme2 pages

Questions as text

Q1 · A biologist keeps a potted plant in a laboratory

Q2 · The diagram shows a palisade cell

Q3 · Which substances may diffuse into and out of plant cells?

Q4 · Proteins that function as biological catalysts are called A enzymes B hormones C solvents…

Q5 · The diagram shows a section through part of a leaf

Q6 · A water plant exposed to sunlight

Q7 · A tree has lost most of its leaves

Q8 · The diagram shows a heart in section and some of its blood vessels

Q9 · Monstera is a climbing plant

Q10 · A healthy person does not eat for several hours but then has a meal rich in carbohydrate

Q11 · The diagram shows a side view of the female reproductive system in a human

Q12 · The diagram shows the thickness of the uterus lining of a woman over a 4-week period

Q13 · An oxpecker bird perches on the back of a buffalo while the buffalo feeds on grass

Q14 · Which method is used to obtain a solid salt from the salt solution?

Q15 · Fluorine and chlorine are in Group VII of the Periodic Table

Q16 · The structure of an organic compound is shown

Q17 · Which substances are formed at the electrodes during the electrolysis of aqueous copper…

Q18 · Sherbet is a mixture of citric acid and sodium hydrogencarbonate

Q19 · The diagram shows equal masses of magnesium added to equal volumes of acid of the same…

Q20 · In the blast furnace, iron(III) oxide reacts with carbon forming iron and carbon monoxide

Q21 · The table shows the results of tests on an aqueous solution of X

Q22 · Which element has similar chemical properties to bromine?

Q23 · An electrical cable contains a copper wire surrounded by a layer of plastic

Q24 · A new alloy is resistant to corrosion

Q25 · The diagram shows an element being added to cold water to form a gas and an alkaline…

Q26 · In which test-tube does a chemical change take place most quickly?

Q27 · Which compound is the main constituent of natural gas?

Q28 · An athlete runs 10 000 metres in 30 minutes

Q29 · A shop-keeper places two identical blocks of cheese on a balance

Q30 · The speed of a car increases as it moves up a hill

Q31 · Cold water evaporates as molecules leave it

Q32 · The table shows the melting points and boiling points of four substances

Q33 · Which row is correct?

Q34 · A student shakes one end of a long rope up and down

Q35 · Which diagram shows a ray of light passing through a glass block in air?

Q36 · A filament lamp is used in a zoo to keep young animals warm

Q37 · A loudspeaker is made to vibrate at four different frequencies

Q38 · A mains circuit can safely supply a current of 40 A

Q39 · A voltmeter and an ammeter are used to determine the resistance of a lamp

Q40 · The diagram shows a circuit with four identical bulbs P, Q, R and S

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