Cambridge IGCSE Biology (BES) 0438 — 2018 May/June Paper 1 · Variant 3

This document consists of 15 printed pages and 1 blank page. IB18 06_0438_13/FP © UCLES 2018 [Turn over *6310794555* Cambridge International Examinations Cambridge International General Certificate of Secondary Education BIOLOGY (US) 0438/13 Paper 1 Multiple Choice (Core) May/June 2018 45 minutes Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, Center number and candidate number on the Answer Sheet in the spaces provided unless this has been done for you. DO NOT WRITE IN ANY BARCODES. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. Electronic calculators may be used.

2 © UCLES 2018 0438/13/M/J/18 1 Which organisms carry out respiration, growth, movement and excretion? A all animals and all plants B animals only C arthropods and flowering plants only D plants only 2 The diagram shows an animal whose scientific name is Falco peregrinus. To which species does it belong? A bird B F. peregrinus C Falco D vertebrate 3 What kind of skin do amphibians have? A dry without scales B dry with scales C moist without scales D moist with scales

3 © UCLES 2018 0438/13/M/J/18 [Turn over 4 The diagram shows a flowering plant. Use the key to identify the plant. flower has four petals plant leaves with jagged edges leaves with smooth edges B A flower has five petals leaves with jagged edges leaves with smooth edges D C 5 The diagram shows a plant cell. In which labeled part of the cell is sugar made? D cell wall A vacuole B chloroplast C nucleus

4 © UCLES 2018 0438/13/M/J/18 6 Why do some root cells have root hairs? A for the maintenance of the temperature of the cell sap B to increase the surface area of the cells C to increase the volume of the cell sap D to provide a place for cell nuclei 7 The diagram shows a section through an alveolus and through a capillary. capillary wall low carbon dioxide concentration high carbon dioxide concentration capillary red blood cells wall of alveolus air X Y How does carbon dioxide move from Y to X? A by diffusion B by osmosis C by translocation D by transpiration 8 Which part of a plant root hair is partially permeable? A the cell sap B the cell surface membrane C the cell vacuole D the cell wall

5 © UCLES 2018 0438/13/M/J/18 [Turn over 9 The table shows the results of food tests carried out on a fruit. test Benedict’s biuret ethanol iodine result positive positive negative negative What did the fruit contain? A fat and reducing sugar B fat and starch C protein and reducing sugar D protein and starch 10 An experiment was carried out to investigate the effect of pH on enzyme action. The graph shows the results. y-axis x-axis What are the labels for the x-axis and the y-axis? x-axis y-axis A pH rate of reaction B pH time C rate of reaction pH D time pH

6 © UCLES 2018 0438/13/M/J/18 11 The diagram shows a section through a leaf. S R P Q What are structures P, Q, R and S? P Q R S A chloroplast phloem palisade tissue xylem B cuticle xylem chloroplast stoma C phloem palisade tissue cuticle stoma D xylem chloroplast phloem cuticle 12 A lack of which dietary component can result in constipation? A fat B fiber (roughage) C carbohydrate D protein 13 A woman requires more calcium in her diet when she is pregnant. Which statement explains why? A bone growth in the fetus B muscle growth in the fetus C production of hemoglobin in the fetus D to provide energy for the fetus

7 © UCLES 2018 0438/13/M/J/18 [Turn over 14 The diagram shows part of the alimentary canal. J K L M Which row correctly identifies the structures labeled J to M? J K L M A esophagus pancreas small intestine stomach B pancreas small intestine stomach esophagus C small intestine stomach esophagus pancreas D stomach esophagus pancreas small intestine 15 The diagram shows the pathway of water from the soil through a plant. soil → X → Y → Z → mesophyll cells Which cells are represented by X, Y and Z? X Y Z A root hair cells root cortex cells xylem B root hair cells xylem root cortex cells C xylem root cortex cells root hair cells D xylem root hair cells root cortex cells 16 What will not affect the rate of transpiration? A humidity of the atmosphere B number of open stomata C rate of respiration D temperature

8 © UCLES 2018 0438/13/M/J/18 17 The diagram shows the human heart. R Q P S In which order does blood pass through the chambers during a complete circuit of the body after it returns from the lungs? A Q → R → S → P B Q → R → P → S C P → S → Q → R D P → S → R → Q 18 The diagrams show some components of the blood of a mammal. Which component causes the blood to start clotting? A B C D 19 What is an indirect method of transmitting disease? A body fluid B blood C food D skin contact between people

9 © UCLES 2018 0438/13/M/J/18 [Turn over 20 A sample of expired air is collected in a gas jar. Another gas jar contains normal atmospheric air. A lighted candle is placed inside each gas jar as shown. The time taken for each flame to go out is measured. As the candles burn they use up the oxygen available in the jar. gas jar X gas jar Y lid air sample candle The table shows the results of this experiment. gas jar time for candle flame to go out / s X 15 Y 9 What is an explanation of the difference between the results in jars X and Y? A Jar X contains atmospheric air which has more carbon dioxide. B Jar X contains expired air which has more carbon dioxide. C Jar Y contains atmospheric air which has less oxygen. D Jar Y contains expired air which has less oxygen. 21 Which row describes anaerobic respiration? energy released oxygen required waste products A a little no lactic acid B a little yes carbon dioxide and water C a lot no lactic acid D a lot yes carbon dioxide and water

10 © UCLES 2018 0438/13/M/J/18 22 The diagram shows the excretory system. X What is structure X? A bladder B kidney C ureter D urethra 23 What is the correct sequence in a reflex action? A receptor → stimulus → motor neuron → relay neuron → sensory neuron → effector B receptor → stimulus → sensory neuron → relay neuron → motor neuron → effector C stimulus → receptor → motor neuron → relay neuron → sensory neuron → effector D stimulus → receptor → sensory neuron → relay neuron → motor neuron → effector 24 In 1921, Banting and Best extracted a substance from the pancreas of an animal. The substance was injected into children whose blood sugar concentrations were too high. The children’s blood sugar concentrations were returned to normal. Which substance in the pancreatic extract would return the children’s blood sugar concentrations to normal? A adrenaline B insulin C glucose D estrogen

11 © UCLES 2018 0438/13/M/J/18 [Turn over 25 A seed is placed and grown on a rotating disc, as shown. seed pinned to disc Which diagram shows the appearance of the seedling shoot after seven days? A B C D 26 Which organ is the site of break down of alcohol in the human body? A bladder B kidney C liver D stomach 27 Alcohol is a drug. Which statement is correct? A It can cause COPD. B It is a depressant. C It is not addictive. D It speeds up reaction times. 28 The following statements give information about the reproduction of different organisms. 1 Daffodil plants produce genetically identical bulbs that grow into a new plant the following year. 2 In summer, female aphids produce genetically identical offspring without fertilization by a male. 3 Most banana plants are genetically identical because they were produced from one parent plant. Which statements are examples of asexual reproduction? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

12 © UCLES 2018 0438/13/M/J/18 29 Which stages in sexual reproduction occur in both flowering plants and human reproduction? 1 Gametes are made by meiosis. 2 Gametes fuse to form a zygote. 3 The male gamete moves to the female gamete. A 1, 2 and 3 B 1 and 2 only C 1 only D 2 and 3 only 30 Which part of the female reproductive system produces estrogen? A cervix B ovary C oviduct D uterus 31 Which hormone is responsible for the development of secondary sexual characteristics? A FSH B LH C estrogen D progesterone 32 A length of DNA codes for a protein. What is this a definition of? A a gene B an amino acid C an X chromosome D a Y chromosome

13 © UCLES 2018 0438/13/M/J/18 [Turn over 33 The diagrams show human male and female reproductive organs. P Q R X Y Z Where does meiosis take place? A P and X B Q and X C Q and Y D R and Z 34 The bar chart shows the heights of pea plants grown from 500 pea seeds. number of pea plants height of plants What variation do the plants show? continuous discontinuous A   B   C   D  

14 © UCLES 2018 0438/13/M/J/18 35 The picture shows a fox that lives in the desert. Which adaptation does the fox have for living in the desert? A eyes at front of head to help judge distance B large ears to increase heat loss C long bushy tail for balance D sharp teeth to catch prey 36 The diagram shows a simple food chain. green plants chickens wild dogs 1 2 3 Which process releases the energy that is lost at 1, 2 and 3? A ingestion B photosynthesis C respiration D transpiration

15 © UCLES 2018 0438/13/M/J/18 37 Which labeled stage in the water cycle shows precipitation? land river sea A B D plant roots C 38 What is the name of the structure that separates the left and right ventricles of the heart? A atrium B septum C vena cava D valve 39 What is a source of air pollution? A herbicides B methane C untreated sewage D water vapor 40 Which process does not change the carbon dioxide level in the air? A decomposition B feeding C photosynthesis D respiration

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IGCSE™ is a registered trademark. This document consists of 3 printed pages. © UCLES 2018 [Turn over Cambridge Assessment International Education Cambridge International General Certificate of Secondary Education BIOLOGY (US) 0438/13 Paper 1 Multiple Choice (Core) May/June 2018 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge International will not enter into discussions about these mark schemes. Cambridge International is publishing the mark schemes for the May/June 2018 series for most Cambridge IGCSE™, Cambridge International A and AS Level and Cambridge Pre-U components, and some Cambridge O Level components.

0438/13 Cambridge IGCSE – Mark Scheme PUBLISHED May/June 2018 © UCLES 2018 Page 2 of 3 Question Answer Marks 1 A 1 2 B 1 3 C 1 4 D 1 5 B 1 6 B 1 7 A 1 8 B 1 9 C 1 10 A 1 11 B 1 12 B 1 13 A 1 14 A 1 15 A 1 16 C 1 17 B 1 18 D 1 19 C 1 20 D 1 21 A 1 22 A 1 23 D 1 24 B 1 25 A 1 26 C 1 27 B 1 28 A 1

0438/13 Cambridge IGCSE – Mark Scheme PUBLISHED May/June 2018 © UCLES 2018 Page 3 of 3 Question Answer Marks 29 A 1 30 B 1 31 C 1 32 A 1 33 B 1 34 B 1 35 B 1 36 C 1 37 D 1 38 B 1 39 B 1 40 B 1