Cambridge IGCSE Science - Combined 0653 — 2009 May/June Paper 1 · Variant 1
0653/11/M/J/09 · 40 questions · 40 marks · ≈45 min
The question paper and its mark scheme, free to read here and free to download. This is Cambridge’s own paper, exactly as it was sat.
Question paper20 pages
Mark scheme2 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · Which pair of features is found in plant cells but not in animal cells?
1 Which pair of features is found in plant cells but not in animal cells? A cell membrane cell sap B cell sap cell wall C cell wall nucleus D nucleus cell membrane
Mark scheme: B
Q2 · Which parts of a plant cell are fully permeable?
2 Which parts of a plant cell are fully permeable? cell surface cell wall membrane A v v B v x Cc x v D x x
Mark scheme: C
Q3 · The following statements are about enzymes and metabolic reactions
3 The following statements are about enzymes and metabolic reactions. 1 Different metabolic reactions are catalysed by different enzymes. 2 Enzymes are produced only inside living cells. 3 Enzymes cannot be re-used. 4 Metabolic reactions take place only inside living cells. Which two statements are correct? A 1 and 2 B 2 and 3 C 3 and 4 D 4 and 1
Mark scheme: A
Q4 · The diagram shows only the left side of the heart as it appears at one particular stage…
4 The diagram shows only the left side of the heart as it appears at one particular stage in a heart-beat. Which statements describe the left side of the heart at this stage? 1 The semilunar valve is closed. 2 Deoxygenated blood is being pumped to the lungs. 3 Oxygenated blood is entering the atrium. 4 The bicuspid valve is closed. A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
Mark scheme: D
Q5 · The diagram shows a section through a leaf
5 The diagram shows a section through a leaf. Where does evaporation of water take place? C B D A
Mark scheme: B
Q6 · The results of tests carried out on four food samples are shown
6 The results of tests carried out on four food samples are shown. key ¥ = positive test X = negative test sample Benedict's iodine biuret test test test 1 v v x 2 v x v 3 x v x 4 x x v Which two samples contain protein? B 1and3 C 2and4 A 1 and 2 D 3and4
Mark scheme: C
Q7 · The diagram shows a section through part of a lung
7 The diagram shows a section through part of a lung. blood capillary carbon dioxide diffuses out of blood air in and out X oxygen diffuses into blood What is structure X? A alveolus B bronchus C pleural membrane D trachea
Mark scheme: A
Q8 · The following statements are about reproduction
8 The following statements are about reproduction. 1 Clones grown in different environments will always look exactly alike. 2 Clones possess identical genes. 3 Sexual reproduction produces offspring with different alleles. 4 When two gametes fuse they form a clone. Which two statements are correct? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4
Mark scheme: C
Q9 · The diagram shows the human female reproductive system
9 The diagram shows the human female reproductive system. Where is the egg fertilised? D A B C
Mark scheme: D
Q10 · After fertilisation, which part of a flower develops into a seed?
10 After fertilisation, which part of a flower develops into a seed? A egg B ovary C ovule D pollen
Mark scheme: C
Q11 · Ten plants are produced asexually from one parent plant
11 Ten plants are produced asexually from one parent plant. The diagram shows these ten plants after they have grown for a few weeks in two separate groups. group 1 group 2 What is the explanation for the difference between the two groups of plants? A All the plants are genetically identical and are growing in the same conditions. B All the plants are genetically identical but are growing in different conditions. C The plants are genetically different and are growing in the same conditions. D The plants are genetically different and are growing in different conditions.
Mark scheme: B
Q12 · Which process takes carbon dioxide out of the air?
12 Which process takes carbon dioxide out of the air? A combustion B decomposition C photosynthesis D respiration
Mark scheme: C
Q13 · The graph shows the number of species of plants in different parts of a rainforest
13 The graph shows the number of species of plants in different parts of a rainforest. number of species of plants (Western) edge middle (Eastern) edge parts of rainforest Which statement about species diversity is correct? A It is greatest at the edges of the forest. B It is greatest in the middle of the forest. C Is the same at both edges of the forest. D It is the same throughout the forest.
Mark scheme: B
Q14 · Diagrams X, Y and Z represent three different substances
14 Diagrams X, Y and Z represent three different substances. X Y Z atom of element P atom of element Q Which row in the table correctly describes X, Y and Z? X Y Z A compound element mixture B compound mixture element C mixture element compound D mixture compound element
Mark scheme: D
Q15 · Two atoms have the symbols 40 X and 40 Y
15 Two atoms have the symbols 40 X and 40 Y . 18 20 It follows that they have the same number of ……1…… and that they form ……2…… bond. Which words correctly complete gaps 1 and 2? 1 2 A neutrons an ionic B neutrons no C nucleons an ionic D nucleons no
Mark scheme: D
Q16 · Which diagrams of the structures of nitrogen and ammonia are correct?
16 Which diagrams of the structures of nitrogen and ammonia are correct? W X Y Z H H N N N N H N H H N H H A W and Y B W and Z C X and Y D X and Z
Mark scheme: C
Q17 · The positions of four elements are shown in the outline of the Periodic Table
17 The positions of four elements are shown in the outline of the Periodic Table. Which element has a high melting point and forms coloured compounds? A B C D
Mark scheme: A
Q18 · A molecule of phosphoric acid contains three hydrogen atoms, one phosphorus atom and four…
18 A molecule of phosphoric acid contains three hydrogen atoms, one phosphorus atom and four oxygen atoms. What is the correct formula for this molecule? A 3HP4O B 3HPO4 C H3PO4 D H3(PO)4
Mark scheme: C
Q19 · The diagram shows apparatus in which gas P can be passed through liquid X and then over…
19 The diagram shows apparatus in which gas P can be passed through liquid X and then over iron filings. gas P iron filings liquid X Four experiments, each using a different gas P and a different liquid X, are carried out. In which experiment do the iron filings rust? gas P liquid X A nitrogen concentrated sulfuric acid (a drying agent) B nitrogen water C oxygen concentrated sulfuric acid (a drying agent) D oxygen water
Mark scheme: D
Q20 · A firework gives a bright flame in which yellow and red colours are seen
20 A firework gives a bright flame in which yellow and red colours are seen. Which two metals are present in the firework? A calcium and copper B copper and potassium C potassium and sodium D sodium and calcium
Mark scheme: D
Q21 · Polluted air contains toxic oxides of the elements carbon, C, and sulfur, S, emitted from…
21 Polluted air contains toxic oxides of the elements carbon, C, and sulfur, S, emitted from car exhausts. Which row in the table is correct? toxic oxide toxic oxide is acidic formula is XO A C only C only B C only S only C S only C only D S only S only
Mark scheme: C
Q22 · The contents of the labelled beakers shown are mixed
22 The contents of the labelled beakers shown are mixed. dilute HNO3 MgCO3 Which salt is formed? A magnesium nitrate B magnesium sulfate C manganese nitrate D manganese sulfate
Mark scheme: A
Q23 · Marble chips react with dilute hydrochloric acid as shown
23 Marble chips react with dilute hydrochloric acid as shown. CaCO3(s) + 2HCl (aq) → CaCl 2(aq) + H2O(l) + CO2(g) The progress of this reaction was followed using the apparatus shown. cotton wool balance Which graph shows the results of this experiment? A B balance balance reading reading 0 0 0 time 0 time C D balance balance reading reading 0 0 0 time 0 time
Mark scheme: B
Q24 · Testing for the gases chlorine, hydrogen and oxygen requires different methods
24 Testing for the gases chlorine, hydrogen and oxygen requires different methods. For which gases is a splint used? Cl, H2 Oz A v v x B v x x Cc x v v D x x v
Mark scheme: C
Q25 · Which equation shows the complete combustion of a hydrocarbon?
25 Which equation shows the complete combustion of a hydrocarbon? A C2H4 + 2O2 → 2CO + 2H2O B C2H4 + 3O2 → 2CO2 + 2H2O C C2H6O + 2O2 → 2CO + 3H2O D C2H6O + 3O2 → 2CO2 + 3H2O
Mark scheme: B
Q26 · How can the structure of a plastic be described?
26 How can the structure of a plastic be described? A a mixture of ions B a mixture of long chain molecules C a mixture of atoms of metals D a mixture of small hydrocarbon molecules
Mark scheme: B
Q27 · Which property of the compounds in crude oil is used to separate the oil into useful…
27 Which property of the compounds in crude oil is used to separate the oil into useful fractions? A boiling point B density C melting point D solubility
Mark scheme: A
Q28 · A car travels 100 km
28 A car travels 100 km. The highest speed of the car is 90 km/h, and the lowest speed is 30 km/h. The journey takes two hours. What is the average speed for the journey? A 30 km / h B 50 km / h C 60 km / h D 90 km / h
Mark scheme: B
Q29 · Which items of apparatus are required to determine the density of a liquid?
29 Which items of apparatus are required to determine the density of a liquid? A balance and measuring cylinder B balance and thermometer C metre rule and measuring cylinder D metre rule and thermometer
Mark scheme: A
Q30 · Which property of an object cannot be changed by a force?
30 Which property of an object cannot be changed by a force? A its mass B its motion C its shape D its size
Mark scheme: A
Q31 · A wooden plank rests in equilibrium on two boulders on opposite sides of a narrow stream
31 A wooden plank rests in equilibrium on two boulders on opposite sides of a narrow stream. Three forces of size P, Q and R act on the plank. P R plank Q How are the sizes of the forces related? A P + Q = R B P + R = Q C P = Q = R D P = Q + R
Mark scheme: B
Q32 · Electricity can be obtained from different energy resources
32 Electricity can be obtained from different energy resources. Which energy resource is used to obtain electricity without producing heat to boil water? A coal B gas C hydroelectric D nuclear
Mark scheme: C
Q33 · A rod is made up of copper and wood joined together
33 A rod is made up of copper and wood joined together. After the rod is heated at the join in the centre for about a minute, where would the lowest temperature be? B C A D wood copper
Mark scheme: A
Q34 · A hot water tank is fitted with two identical heaters P and Q
34 A hot water tank is fitted with two identical heaters P and Q. Heater P is two thirds of the way up the tank and heater Q is at the very bottom. The tank is full of cold water. hot water out heater P cold water in heater Q When only heater Q is switched on, it takes a very long time to heat the tank of water to the required temperature of 60 °C. What happens to the tank of cold water if only heater P is switched on? A All the water reaches 60 °C in less time than before. B All the water reaches 60 °C in the same time as before. C The bottom two thirds of the water reaches 60 °C in two thirds of the original time D The top one third of the water reaches 60 °C in one third of the original time.
Mark scheme: D
Q35 · The diagram shows the path of a ray of light passing through the principal focus F of a…
35 The diagram shows the path of a ray of light passing through the principal focus F of a lens. Which broken line shows the direction of the ray after it leaves the lens? lens ray of light A F F’ B D C
Mark scheme: B
Q36 · Using the circuit shown, the current I is found for various voltages V
36 Using the circuit shown, the current I is found for various voltages V. The temperature of the resistor does not change. variable direct voltage V A I Which graph shows the results obtained? A B C D I I I I 0 0 0 0 0 V 0 V 0 V 0 V
Mark scheme: A
Q37 · In the circuit shown, ammeter X reads 0.5 A
37 In the circuit shown, ammeter X reads 0.5 A. 4.0 V X A A Y 3.0 Ω 5.0 Ω What does ammeter Y read? A 0 B 0.5 A C 3.5 A D 4.0 A
Mark scheme: B
Q38 · In the circuits shown, all the resistors are identical
38 In the circuits shown, all the resistors are identical. Which circuit has the least resistance? A B C D
Mark scheme: C
Q39 · In the circuit below, one of the lamps breaks, causing all the other lamps to go out
39 In the circuit below, one of the lamps breaks, causing all the other lamps to go out. Which lamp breaks? A C D B
Mark scheme: D
Q40 · A transformer has 50 turns on its primary coil and 100 turns on its secondary coil
40 A transformer has 50 turns on its primary coil and 100 turns on its secondary coil. An alternating voltage of 25.0 V is connected across the primary coil. 25.0 V primary coil secondary coil 50 turns 100 turns What is the voltage across the secondary coil? A 12.5 V B 50.0 V C 175 V D 200 V
Mark scheme: B
What was in this paper
The subtopics covered by these 40 questions, and how many questions each got. Open one in a new tab to see every Cambridge question on it.
3Cell structure2Fuels2Identification of ions and gases2Sexual reproduction in humans2Sexual reproduction in plants2Transfer of thermal energy2Air quality and climate1Atomic structure and the Periodic Table1Biological molecules1Carbon cycle1Cells, batteries, generators and motors1Corrosion of metals1Density1Electrical quantities1Elements, compounds and mixtures1Energy, work and power1Enzymes1Forces1Formulas1Gas exchange in humans1Habitat destruction1Heart1Light1Mass and weight1Motion1Polymers1Preparation of salts1Rate of reaction1Simple molecules and covalent bonds1Transition elements1Transpiration1What you needed in this session
Cambridge’s own grade thresholds for 2009 May/June, Paper 1 · Variant 1. A higher threshold means an easier paper — the bar moves with how the cohort did.