GCSE Additional Science June 2008 Modules B5 C5 P5 Paper A

GENERAL CERTIFICATE OF SECONDARY EDUCATION A216/01 TWENTY FIRST CENTURY SCIENCE ADDITIONAL SCIENCE A Unit 2 Modules B5 C5 P5 (Foundation Tier) WEDNESDAY 18 JUNE 2008 Afternoon Time: 40 minutes Candidates answer on the question paper. Additional materials (enclosed): None Calculators may be used. Additional materials: Pencil Ruler (cm/mm) F * C U P /T 4 4 3 7 1 * This document consists of 15 printed pages and 1 blank page. SPA (SJF4658/CGW) T44371/6 © OCR 2008 [D/103/3775] OCR is an exempt Charity [Turn over INSTRUCTIONS TO CANDIDATES • Write your name in capital letters, your Centre Number and Candidate Number in the boxes above. • Use blue or black ink. Pencil may be used for graphs and diagrams only. • Read each question carefully and make sure that you know what you have to do before starting your answer. • Answer all the questions. • Do not write in the bar codes. • Write your answer to each question in the space provided. INFORMATION FOR CANDIDATES • The number of marks for each question is given in brackets [ ] at the end of each question or part question. • The total number of marks for this paper is 42. • A list of physics equations is printed on page two. • The Periodic Table is printed on the back page. FOR EXAMINER’S USE Qu. Max Mark 1 6 2 5 3 3 4 4 5 5 6 3 7 2 8 4 9 5 10 5 TOTAL 422 © OCR 2008 TWENTY FIRST CENTURY SCIENCE EQUATIONS Useful Relationships Explaining Motion speed = distance travelled time taken momentum = mass × velocity change of momentum = resultant force × time for which it acts work done by a force = force × distance moved by the force change in energy = work done change in GPE = weight × vertical height difference kinetic energy = 12 × mass × [velocity]2 Electric Circuits resistance = voltage current Vp Vs = Np Ns energy transferred = power × time power = potential difference × current efficiency = energy usefully transferred total energy supplied × 100% The Wave Model of Radiation wave speed = frequency × wavelength3 [Turn over © OCR 2008 BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE Question 1 starts on page 44 © OCR 2008 Answer all the questions. 1 Mike studies cells in plants and animals. He draws a typical plant cell. nucleuscell vacuole cell membrane cytoplasm cell wall (a) The genetic code is held in the molecule, DNA. DNA codes for the production of proteins. Write the name of the correct part of the cell in each box. Use names from the diagram. part of cell where DNA is held where protein is produced [2] (b) Mike is interested in the structure of DNA. Complete the following sentences about DNA. Choose words from the list. acids bases double helix genes single strand triple helix The DNA structure is in the shape of a …………………………………… . DNA contains four different …………………………………… . [2]5 [Turn over © OCR 2008 (c) Mike asks his friends to describe the differences between plants and animals. Two gave wrong answers. Ruth Joss Lizzie Hassan Joe The body cells in an animal do not become specialised. Many animal cells become highly specialised. Animals can continue to grow in height throughout their lives. Plants can continue to grow in height throughout their lives. Some plant cells can remain unspecialised. Which two people gave wrong descriptions of the differences between plants and animals? ……………………………… and ……………………………… [2] [Total: 6]6 © OCR 2008 2 This baby girl has just been born. She is part of the human life cycle. egg sperm zygote B embryo baby girl adult woman C A D © Mother & Baby Picture Library /EMAP (a) At which stage, A, B, C or D, in the cycle does meiosis take place? answer ………………… [1] (b) The chromosome number in most human body cells is 46. Put a ring around the number of chromosomes in human cells produced by meiosis. 2 23 46 92 [1] (c) Mitosis also takes place in the human life cycle. What happens to the chromosome number when body cells divide by mitosis? Put a ring around the correct answer. doubles halves quarters stays the same [1]7 [Turn over © OCR 2008 (d) One of the stages in the human life cycle is the formation of a zygote. Put ticks (✓) in the boxes to show if the statements about the zygote are true or false. The zygote contains … true false … a unique combination of chromosomes. … a set of chromosomes from each parent. … only chromosomes from the mother. … twice the number of chromosomes found in the sperm. … half the number of chromosomes found in the egg. [2] [Total: 5]8 © OCR 2008 3 This plant is growing towards the window. (a) (i) What process causes the plant to grow towards the window? Put a ring around the correct word. phototropism reproduction respiration [1] (ii) How does the plant benefit from this process? Complete the sentence. Choose from this list. carbon dioxide light oxygen water This process helps the plant to get more ……………………………… . [1] (b) People prefer to buy plants with leaves growing in all directions. A B What is the best way of producing plants like A? Put a tick (✓) in the correct box. grow them with an overhead source of light grow them in the dark grow them next to windows [1] [Total: 3]9 [Turn over © OCR 2008 4 The Earth is made of different layers. air ABDC water rigid rock semi-rigid rock liquid solid (a) Which layer, A, B, C or D, is the lithosphere? answer ………………… [1] (b) Here are some elements which are in the lithosphere. Put a ring around each of the three most abundant elements. aluminium chlorine helium hydrogen silicon oxygen [3] [Total: 4]10 © OCR 2008 5 The Earth’s atmosphere contains different gases. (a) Draw a straight line from the formula of each gas to its name. Draw a straight line from the formula of each gas to its structure. name formula structure nitrogen Ar argon N2 carbon dioxide CH4 methane CO2 [3] (b) Tony draws a diagram of an oxygen cycle. oxygen in plants oxygen in animals oxygen in carbon dioxide and water free oxygen in the air oxygen in rocks F E D B A C (i) Most of these stages take place fairly quickly. Which stage, A, B, C, D, E or F, is most likely to keep the oxygen out of the air for millions of years? answer ……………………………… [1] (ii) Give the letter for one stage which removes oxygen from the air. ………………………… Give the letter for one stage which puts oxygen into the air. ………………………… [1] [Total: 5]11 [Turn over © OCR 2008 6 There are different types of sugar. Each is made from the elements carbon, hydrogen and oxygen. Here are diagrams of four of them. C6H12O6 A C5H10O5 B C C3H6O3 D (a) Which sugar, A, B, C or D, has the most oxygen atoms in one molecule? answer ……………………………… [1] (b) Put a ring around the symbol below which stands for a hydrogen atom. [1] (c) What is the molecular formula of sugar C? ……………………………… [1] [Total: 3] 7 Some metals are extracted from a metal compound by melting the compound and then electrolysing it. Which two of these substances, when melted, can be electrolysed to produce metals? aluminium oxide carbohydrate DNA protein silicon dioxide sodium chloride ……………………………… and ……………………………… [2] [Total: 2]12 © OCR 2008 8 Jo likes to listen to her MP3 player in the car. She uses this circuit to connect her MP3 player to the 12 V car battery. MP3 player 12 V (a) When the MP3 player is switched on, the potential difference across it is 1.5 V and the current in it is 0.05 A. What is the power of her MP3 player? Put a ring around the correct answer. 0.033 W 0.075 W 30 W [1] (b) Complete the sentences. Choose words from the list. charge power resistance temperature voltage The resistor resists the flow of ……………………………… through the MP3 player. This results in an increase in ……………………………… for the resistor. [2]13 [Turn over © OCR 2008 (c) Which of these graphs, A, B, C or D, shows how the current in the resistor depends on the voltage across it? current current current current 0 0 0 0 0 0 0 0 voltage voltage voltage voltage A B C D answer ……………………………… [1] [Total: 4]14 © OCR 2008 9 Julie investigates the mains plug on her computer.5 AMP FUSE metal pin plastic case (a) Draw a straight line from the start of each sentence to its correct end. start end The metal pin ... ... arrives at the plug at 230 V. The plastic case ... ... has no free electrons for an electric current. The mains supply ... ... has free electrons to make an electric current. [2] (b) Complete the sentences about the mains electricity supply. Choose from the list. a.c. d.c. h.t. generators inductors transformers The mains electricity to our homes is ………………………………… . It is made by ………………………………… in power stations. Its voltage can be changed by ………………………………… . [3] [Total: 5]15 © OCR 2008 10 Daniel builds this circuit. It contains an LDR. A cell (a) Put a ring around the LDR. [1] (b) Draw a straight line from each component of the circuit to its function. component function has a variable resistance cell has a constant resistance ammeter pushes electrons around the circuit LDR measures flow of electrons around the circuit [3] (c) Complete the sentence. Choose words from the list. bigger than smaller than the same as The current in the ammeter is ………………………………… the current in the resistor. [1] [Total: 5] END OF QUESTION PAPER Copyright Acknowledgements: Q.2 photo © Mother & Baby Picture Library /EMAP Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (OCR) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. OCR is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.16 © OCR 2008 The Periodic Table of the Elements * The lanthanoids (atomic numbers 58-71) and the actinoids (atomic numbers 90-103) have been omitted. The relative atomic masses of copper and chlorine have not been rounded to the nearest whole number. 1 2 3 4 5 6 7 0 Key 1Hhydrogen 1 4 He helium 2 7 Li lithium 3 9 Be beryllium 4 relative atomic mass atomic symbol name atomic (proton) number 11 B boron 5 12 C carbon 6 14 N nitrogen 7 16 O oxygen 8 19 F fluorine 9 20 Ne neon 10 23 Na sodium 11 24 Mg magnesium 12 27 Al aluminium 13 28 Si silicon 14 31 P phosphorus 15 32 S sulfur 16 35.5 Cl chlorine 17 40 Ar argon 18 39 K potassium 19 40 Ca calcium 20 45 Sc scandium 21 48 Ti titanium 22 51 V vanadium 23 52 Cr chromium 24 55 Mn manganese 25 56 Fe iron 26 59 Co cobalt 27 59 Ni nickel 28 63.5 Cu copper 29 65 Zn zinc 30 70 Ga gallium 31 73 Ge germanium 32 75 As arsenic 33 79 Se selenium 34 80 Br bromine 35 84 Kr krypton 36 85 Rb rubidium 37 88 Sr strontium 38 89 Y yttrium 39 91 Zr zirconium 40 93 Nb niobium 41 96 Mo molybdenum 42 [98] Tc technetium 43 101 Ru ruthenium 44 103 Rh rhodium 45 106 Pd palladium 46 108 Ag silver 47 112 Cd cadmium 48 115 In indium 49 119 Sn tin 50 122 Sb antimony 51 128 Te tellurium 52 127 I iodine 53 131 Xe xenon 54 133 Cs caesium 55 137 Ba barium 56 139 La* lanthanum 57 178 Hf hafnium 72 181 Ta tantalum 73 184 W tungsten 74 186 Re rhenium 75 190 Os osmium 76 192 Ir iridium 77 195 Pt platinum 78 197 Au gold 79 201 Hg mercury 80 204 Tl thallium 81 207 Pb lead 82 209 Bi bismuth 83 [209] Po polonium 84 [210] At astatine 85 [222] Rn radon 86 [223] Fr francium 87 [226] Ra radium 88 [227] Ac* actinium 89 [261] Rf rutherfordium 104 [262] Db dubnium 105 [266] Sg seaborgium 106 [264] Bh bohrium 107 [277] Hs hassium 108 [268] Mt meitnerium 109 [271] Ds darmstadtium 110 [272] Rg roentgenium 111 Elements with atomic numbers 112-116 have been reported but not fully authenticated