Cambridge IGCSE Science - Combined 0653 — 2006 Oct/Nov Paper 1 · Variant 1

Question 1

1 Living and dead plant cells are placed in a dilute solution of red dye. After a few minutes the cells are observed using a microscope. Only the dead cells are stained red. Which part of the living cells stops the uptake of the red dye? A cell membrane B cell wall C cytoplasm D nucleus

Accepted Answer

A

Question 2

2 Which type of chemical is the enzyme catalase? A fat B protein C starch D sugar

Accepted Answer

B

Question 3

3 The diagram shows the pathway taken by water as it passes through a plant. Q R P In which state is the water at positions P, Q and R? P Q R A liquid liquid liquid B liquid liquid vapour C liquid vapour vapour D vapour vapour vapour

Accepted Answer

B

Question 4

4 Four foods are each tested separately with Benedict’s, biuret and iodine solutions.

Which food contains starch and reducing sugar?

food | Benedict’s test biuret test iodine test
A v v x
B v x v
Cc x x v
D x v x

key
v¥ = positive result

X = negative result

Accepted Answer

B

Question 5

5 The diagram shows an alveolus and one of its capillaries. wall of alveolus capillary wall red blood cells What moves in the direction shown by the arrows? A carbon dioxide B hydrogen C oxygen D water

Accepted Answer

C

Question 6

6 The diagram shows a section through the human heart. Which vessel is a vein containing oxygenated blood? B C A D

Accepted Answer

D

Question 7

7 The diagram shows some cells in a leaf of a green plant. In which layer of cells does most photosynthesis occur? sunlight A B C D gases enter

Accepted Answer

B

Question 8

8 In a healthy person, which shows the correct relationship between blood sugar level, insulin level in the blood, and liver activity? blood sugar level insulin level liver activity A high high removes glucose from the blood B high low releases glucose into the blood C low high releases glucose into the blood D low low removes glucose from the blood

Accepted Answer

A

Question 9

9 A variety of potato plant produces red tubers (‘potatoes’) that grow into new potato plants which then produce red ‘potatoes’ the following year. Why is this? A Asexual reproduction produces identical potato plants. B Asexual reproduction results in different coloured ‘potatoes’. C Sexual reproduction requires the potato plant to produce flowers. D Sexual reproduction produces only red coloured ‘potatoes’.

Accepted Answer

A

Question 10

10 After it has been fertilised, which part of a flower develops into a seed? A egg B ovary C ovule D pollen

Accepted Answer

C

Question 11

11 Which pairs of human features are inherited and not affected by the environment? A blood group and body mass B blood group and sex C hair colour and height D sex and body mass

Accepted Answer

B

Question 12

12 The diagram shows the carbon cycle. carbon compounds in the atmosphere 1 6 4 2 fossil fuels carbon compounds 3 carbon compounds 5 in animals in plants carbon compounds in dead organisms Which of the numbered processes represent respiration and photosynthesis? respiration photosynthesis A 3 1 B 4 1 C 5 2 D 6 3

Accepted Answer

B

Question 13

13 Which statement describes species diversity? A the number of different types of habitat in which species are found B the total number of habitats in which a species is found C the number of species in a community D the number of variations within a species

Accepted Answer

C

Question 14

14 Which substance is an element? A air B brass C iron D water

Accepted Answer

C

Question 15

15 Atoms of four different elements are shown. Which atom contains six neutrons? A 4 He B 6 iL C 11 B D 14 C 2 3 5 6

Accepted Answer

C

Question 16

16 Which substance is an ionic compound? electrical conductivity melting point when melted A high high B high low C low high D low low

Accepted Answer

A

Question 17

17 Which property of an element cannot be predicted from its position in the Periodic Table? A the charge on its ion B the melting point of the element C the metallic / non-metallic character of the element D the number of protons in its nucleus

Accepted Answer

B

Question 18

18 The diagram shows some elements in Groups Ill, IV and V of the Periodic Table.

III IV V
Al Si

Ga Ge As
In Sn Sb
Tl Pb Bi

Which two elements would be expected to form an oxide of the type XO2?

0 0O WwW >

In and Sn

x «KX

Sn and Pb

x < x

Accepted Answer

C

Question 19

19 Which element, present in fossil fuels, is responsible for causing ‘acid rain’? A carbon B hydrogen C oxygen D sulphur

Accepted Answer

D

Question 20

20 The diagrams show some molecules of substances present in air. Different circles represent
atoms of different elements.

rw} Le} lel ie

Which elements could be shown as @) and @?

© = nitrogen @ = oxygen
A Jv v
B Jv x
Cc x v
D x x

Accepted Answer

A

Question 21

21 Three metals are listed. copper magnesium zinc Which of these metals react with dilute sulphuric acid? A copper and magnesium only B copper and zinc only C magnesium and zinc only D copper, magnesium and zinc

Accepted Answer

C

Question 22

22 Hydrogen is passed over heated copper(II) oxide as shown. copper(II) oxide hydrogen drops of liquid heat The copper(II) oxide is reduced. Which other statement also describes a change that occurs during the reaction? A Copper is distilled. B Copper(II) oxide is thermally decomposed. C Hydrogen is condensed. D Hydrogen is oxidised.

Accepted Answer

D

Question 23

23 Sodium chloride is an ionic salt that is used industrially as an electrolyte. Under which conditions does sodium chloride behave as an electrolyte? solid molten in aqueous solution A no no yes B no yes yes C yes no no D yes yes no

Accepted Answer

B

Question 24

24 A substance, X, is dissolved in water and electrolysed as shown. 6 V d.c. + – carbon carbon anode cathode solution of X in water A yellow-green gas is given off at the anode and the cathode becomes brown. What is X? A copper(II) chloride B lead(II) bromide C sodium bromide D sodium chloride

Accepted Answer

A

Question 25

25 Which fuel burns to form only one product? A coal B hydrogen C methane D petrol

Accepted Answer

B

Question 26

26 Why is water often used to extinguish fires? A Water is a compound. B Water is neutral. C Water reacts with most fuels. D Water removes heat from the fire.

Accepted Answer

D

Question 27

27 Some man-made plastics are made from small molecules which join together by covalent bonds. What is the main source of these small molecules and what is the structure of the plastics? source of small molecules structure H A coal H C H H H H H H B coal .... C C C C .... H H H H H C oil H C H H H H H H D oil .... C C C C .... H H H H

Accepted Answer

D

Question 28

28 A ruler is used to measure the length of a nail. 5.0 6.0 7.0 8.0 cm What is the length of the nail? A 1.3 cm B 2.9 cm C 5.2 cm D 8.1 cm

Accepted Answer

B

Question 29

29 A newton is a unit of force. Which quantity is measured in newtons? A acceleration B density C mass D weight

Accepted Answer

D

Question 30

30 A student pours liquid into a measuring cylinder. 100 measuring 90 cylinder 80 70 60 50 liquid 40 digital balance 30 20 10 The student records the volume of the liquid from the scale on the measuring cylinder. He then puts the measuring cylinder containing the liquid on a balance and records the mass. What else needs to be measured before the density of the liquid can be calculated? A the depth of the liquid in the measuring cylinder B the mass of the empty measuring cylinder C the temperature of the liquid in the measuring cylinder D the volume of the empty measuring cylinder

Accepted Answer

B

Question 31

31 Which source of energy uses the production of steam to generate electricity? A hydroelectric B nuclear C tides D waves

Accepted Answer

B

Question 32

32 A cyclist travels down a hill from rest at point X without pedalling. The cyclist applies his brakes and the cycle stops at point Y. X hill Y Which energy changes have taken place between X and Y? A kinetic → heat → potential B kinetic → potential → heat C potential → heat → kinetic D potential → kinetic → heat

Accepted Answer

D

Question 33

33 Which line in the table is correct about conduction and convection? conduction convection A can happen in a solid can happen in a solid B can happen in a solid only happens in fluids C only happens in fluids can happen in a solid D only happens in fluids only happens in fluids

Accepted Answer

B

Question 34

34 A parallel beam of light falls on a converging lens. Which diagram shows what happens to the beam of light? A B C D

Accepted Answer

D

Question 35

35 The diagram shows a ray of light striking a plane mirror. 50° What is the angle of reflection? A 40 ° B 50 ° C 80 ° D 130 °

Accepted Answer

A

Question 36

36 When electricity is transmitted over long distances energy is wasted. How can the wasted energy be kept as small as possible? A Keep the current in the transmission lines as large as possible. B Keep the power supplied to the transmission lines as large as possible. C Keep the resistance of the transmission lines as large as possible. D Keep the voltage supplied to the transmission lines as large as possible.

Accepted Answer

D

Question 37

37 In the circuit below, one of the lamps breaks, causing all the other lamps to go out. Which lamp breaks? A C D B

Accepted Answer

D

Question 38

38 An electric heater is connected to the mains using insulated copper wires. The wires become very warm. What can be done to prevent so much heat being produced in the connecting wires? A Use thicker copper wires. B Use thinner copper wires. C Use thicker insulation. D Use thinner insulation.

Accepted Answer

A

Question 39

39 The graph shows the voltage input to a step-down transformer. 12 V voltage input 0 time Which diagram shows the voltage output from the transformer? A B 12 V 12 V voltage voltage output output 0 0 time time C D 12 V 12 V voltage voltage output output 0 0 time time

Accepted Answer

D

Question 40

40 Which line in the table describes the nature of an alpha-particle and of a gamma-ray? alpha-particle gamma-ray A helium nucleus electromagnetic radiation B helium nucleus electron C proton electromagnetic radiation D proton electron

Accepted Answer

A

Question paper16 pages

Mark scheme2 pages

Questions as text

Q1 · Living and dead plant cells are placed in a dilute solution of red dye

Q2 · Which type of chemical is the enzyme catalase?

Q3 · The diagram shows the pathway taken by water as it passes through a plant

Q4 · Four foods are each tested separately with Benedict’s, biuret and iodine solutions

Q5 · The diagram shows an alveolus and one of its capillaries

Q6 · The diagram shows a section through the human heart

Q7 · The diagram shows some cells in a leaf of a green plant

Q8 · In a healthy person, which shows the correct relationship between blood sugar level…

Q9 · A variety of potato plant produces red tubers (‘potatoes’) that grow into new potato…

Q10 · After it has been fertilised, which part of a flower develops into a seed?

Q11 · Which pairs of human features are inherited and not affected by the environment?

Q12 · The diagram shows the carbon cycle

Q13 · Which statement describes species diversity?

Q14 · Which substance is an element?

Q15 · Atoms of four different elements are shown

Q16 · Which substance is an ionic compound?

Q17 · Which property of an element cannot be predicted from its position in the Periodic Table?

Q18 · The diagram shows some elements in Groups Ill, IV and V of the Periodic Table

Q19 · Which element, present in fossil fuels, is responsible for causing ‘acid rain’?

Q20 · The diagrams show some molecules of substances present in air

Q21 · Three metals are listed

Q22 · Hydrogen is passed over heated copper(II) oxide as shown

Q23 · Sodium chloride is an ionic salt that is used industrially as an electrolyte

Q24 · A substance, X, is dissolved in water and electrolysed as shown

Q25 · Which fuel burns to form only one product?

Q26 · Why is water often used to extinguish fires?

Q27 · Some man-made plastics are made from small molecules which join together by covalent bonds

Q28 · A ruler is used to measure the length of a nail

Q29 · A newton is a unit of force

Q30 · A student pours liquid into a measuring cylinder

Q31 · Which source of energy uses the production of steam to generate electricity?

Q32 · A cyclist travels down a hill from rest at point X without pedalling

Q33 · Which line in the table is correct about conduction and convection?

Q34 · A parallel beam of light falls on a converging lens

Q35 · The diagram shows a ray of light striking a plane mirror

Q36 · When electricity is transmitted over long distances energy is wasted

Q37 · In the circuit below, one of the lamps breaks, causing all the other lamps to go out

Q38 · An electric heater is connected to the mains using insulated copper wires

Q39 · The graph shows the voltage input to a step-down transformer

Q40 · Which line in the table describes the nature of an alpha-particle and of a gamma-ray?

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