Cambridge IGCSE Biology (BES) 0438 — 2013 May/June Paper 1 · Variant 3

This document consists of 16 printed pages. IB13 06_0438_13/FP © UCLES 2013 [Turn over *9268994337* UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education BIOLOGY (US) 0438/13 Paper 1 Multiple Choice May/June 2013 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, highlighters, 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 2013 0438/13/M/J/13 1 Which animal is not an arthropod? A B C D 2 The diagram shows an animal found in fresh water. Use the key to identify the animal. 1 body divided into segments … go to 2 body not divided into segments … go to 3 2 straight body … animal A curved body … animal B 3 has a shell … animal C has no shell … animal D

3 © UCLES 2013 0438/13/M/J/13 [Turn over 3 Worms come to the soil surface after heavy rain. Which characteristic of living organisms does this show? A growth B nutrition C reproduction D sensitivity 4 The diagram shows a sea lion. Which labeled feature shows that this animal is a mammal? A streamlined body B flipper C skin D whiskers 5 The diagram shows a bacterial cell. cell wall cell membrane cytoplasm DNA How is this cell different from a typical animal cell? A It has a cell membrane. B It has cytoplasm. C It has no chloroplasts. D It has no nucleus.

4 © UCLES 2013 0438/13/M/J/13 6 Which statement about xylem is correct? A It carries sucrose. B It converts light energy to chemical energy. C It divides actively to help the plant to grow. D It is no longer living. 7 Which of these tissues is not part of the organ with which it is paired? tissue organ containing this tissue A ciliated root B muscle intestine C nervous brain D xylem leaf 8 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

5 © UCLES 2013 0438/13/M/J/13 [Turn over 9 The diagram represents two liquids, separated by a membrane through which osmosis can occur. left right membrane key molecule of water molecule of dissolved sustance What movement of molecules will occur? A Molecules of dissolved substance move from left to right. B Molecules of dissolved substance move from right to left. C Overall, water molecules move from left to right. D Overall, water molecules move from right to left. 10 The scent from a bunch of flowers spreads throughout a room. How does the scent spread? A by conduction B by diffusion C by osmosis D by transpiration 11 The diagram shows a specialized cell. nucleus vacuole cell membrane cell wall For which function is the cell adapted? A absorption of water B contraction of muscles C movement of dust particles D transport of oxygen

6 © UCLES 2013 0438/13/M/J/13 12 A student set up a test-tube containing starch, water and amylase. How could the student test whether the amylase had digested all the starch? A Add Biuret solution. B Add dilute hydrochloric acid. C Add iodine solution. D Weigh the test-tubes and contents before and after the experiment. 13 A human cell contains a length of DNA that carries the code for making which substance? A fat B glycogen C lipase D starch 14 The diagram shows an experiment kept at room temperature. tubing containing starch, protease, protein and simple sugars membrane permeable to small molecules only distilled water test-tube What is present in the water surrounding the membrane after 45 minutes? A amino acids and simple sugars B protein and amino acids C protein and simple sugars D starch and simple sugars

7 © UCLES 2013 0438/13/M/J/13 [Turn over 15 The diagram shows the four types of human tooth. 1 2 3 4 incisor canine premolar molar Which teeth are used for cutting rather than grinding food? A 1 and 2 B 2 and 3 C 3 and 4 D 4 and 1 16 The diagram shows the apparatus used in an investigation to measure the rate of oxygen production during photosynthesis. bright light gas graduated cylinder glass funnel beaker aquatic plant water The investigation was repeated several times and the average amount of gas collected was calculated. Which two factors must be kept constant during this investigation? A the amount of water in the beaker and the height of the graduated cylinder B the size of aquatic plant and the amount of gas in the graduated cylinder C the size of aquatic plant and the duration of exposure to light D the size of the beaker and the funnel

8 © UCLES 2013 0438/13/M/J/13 17 The photograph shows two blood cells, X and Y. X Y What are the functions of cells X and Y? cell X cell Y A carries out phagocytosis carries oxygen B carries oxygen produces antibodies C carries oxygen carries carbon dioxide D produces antibodies carries oxygen 18 When does respiration take place in animals and plants? animals plants A all the time all the time B all the time night time only C day time only day time only D day time only night time only 19 Which chemical could be used to show that cells are respiring aerobically? A Benedict’s solution B dilute sulfuric acid C ethanol D limewater

9 © UCLES 2013 0438/13/M/J/13 [Turn over 20 The table shows the rate of water flow through a tree over a 12 hour period. time of day rate of flow / cm per hour 17:00 100 19:00 120 11:00 140 13:00 250 15:00 300 17:00 260 19:00 180 What conclusion can be drawn from the table? A Between 7:00 and 17:00 hours the rate of flow continuously increases. B The greatest increase in rate of flow in a two-hour period is between 11:00 and 13:00 hours. C Water does not flow up through a tree at night. D Water flow is affected by humidity. 21 The diagram shows a double circulatory system. heart 2 1 3 4 capillaries of the lungs capillaries of the rest of the body Which vessels carry oxygenated blood? A 1 and 2 B 1 and 4 C 2 and 3 D 2 and 4 22 Where is urea made? A intestines B kidney C liver D muscles

10 © UCLES 2013 0438/13/M/J/13 23 The diagram shows some ciliated cells from the trachea. X What is the function of the parts labeled X? A detecting stimuli B exchanging gases C moving mucus D trapping bacteria 24 Which food type, when eaten in excess, will cause a rise in the urea content of urine? A carbohydrate B fat C mineral salts D protein 25 A boy accidentally touches a very hot object and immediately takes his hand away. In this reflex action, what is the effector? A a heat receptor in his hand B a motor neurone C a muscle in his arm D the spinal cord

11 © UCLES 2013 0438/13/M/J/13 [Turn over 26 The diagram shows the eye of a person in a brightly-lit room. F G What happens to distance F and distance G when this person moves into a dimly-lit room? distance F distance G A becomes larger becomes smaller B becomes smaller stays the same C becomes smaller becomes larger D stays the same becomes smaller 27 The graph shows the growth curves for boys and girls. 0 5 10 age / years 15 20 70 60 50 40 30 20 10 0 mass / kg boys girls What is the approximate average growth rate of boys between 10 and 15 years old? A 3.5 kg per year B 18 kg per year C 32 kg per year D 50 kg per year

12 © UCLES 2013 0438/13/M/J/13 28 Which row shows how one type of gamete is transported so that fertilization can occur in a flowering plant? type of gamete how transported A female in a pollen grain B female in a seed C male in a pollen grain D male in a seed 29 In which conditions will seeds germinate? temperature / °C the only gas present water A 20 carbon dioxide water present B 20 oxygen water present C 0 carbon dioxide water absent D 0 oxygen water absent 30 Cystic fibrosis is an inherited disease that occurs when an individual is homozygous for a recessive allele. If parents are both heterozygous for this characteristic, what is the probability that their first child will have cystic fibrosis? A 0% B 25% C 50% D 100% 31 What determines the sex of a baby? A the father’s blood group B the father’s chromosomes C the mother’s blood group D the mother’s chromosomes 32 In cats, the allele for short hair is dominant to the allele for long hair. A short-haired cat gives birth to five kittens. Two of them have long hair. Which statement must be correct? A Neither of the parents is heterozygous. B One parent is homozygous. C The female cat is heterozygous. D The male cat is heterozygous.

13 © UCLES 2013 0438/13/M/J/13 [Turn over 33 A single tree is food for a large population of caterpillars. Several small birds eat the caterpillars. The small birds are eaten by a bird of prey. Which is the pyramid of biomass? A B C D 34 The diagram shows part of the carbon cycle. Which letter represents photosynthesis? carbon dioxide in air plants animals fossil fuels C B A D

14 © UCLES 2013 0438/13/M/J/13 35 Which organisms do not get their energy by eating other organisms? A consumer B decomposer C herbivore D producer 36 Which statement explains why the energy flow in a food chain is in one direction? A Decomposers recycle nutrients for plants. B Energy is not recycled. C Plants convert light energy to chemical energy. D The number of organisms decreases at each level in the food chain. 37 Rabbits eat grass and foxes eat rabbits. What would cause the highest increase in the number of rabbits? A less grass and fewer foxes B less grass and more foxes C more grass and fewer foxes D more grass and more foxes

15 © UCLES 2013 0438/13/M/J/13 [Turn over 38 The diagram shows part of the water cycle. tree soil cloud rain How is water lost from the tree? A condensation B respiration C translocation D transpiration 39 What describes eutrophication and its effect on a river? A Nutrients are depleted in the river, causing bacteria to die. This allows plants to grow and deoxygenate the water. B Nutrients are depleted in the river, causing plants to die. These decompose, so the water is deoxygenated. C Nutrients enter the river, causing algae to grow. These die and decompose, so the water is deoxygenated. D Nutrients enter the river, causing plants to grow. These provide extra food for animals, which deoxygenate the water.

16 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 (UCLES) 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. University of Cambridge International Examinations 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. © UCLES 2013 0438/13/M/J/13 40 The bloodworm is found in heavily polluted water. The diagram shows where raw sewage flows into a river. Where would there be fewest bloodworms? input of sewage B A C D direction of flow

CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education MARK SCHEME for the May/June 2013 series 0438 BIOLOGY (US) 0438/13 Paper 1 (Multiple Choice), maximum raw mark 40 Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes. Cambridge is publishing the mark schemes for the May/June 2013 series for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level components and some Ordinary Level components.

Page 2 Mark Scheme Syllabus Paper IGCSE – May/June 2013 0438 13 © Cambridge International Examinations 2013 Question Number Key Question Number Key 1 B 21 D 2 D 22 C 3 D 23 C 4 D 24 D 5 D 25 C 6 D 26 C 7 A 27 A 8 B 28 C 9 C 29 B 10 B 30 B 11 A 31 B 12 C 32 C 13 C 33 A 14 A 34 C 15 A 35 D 16 C 36 B 17 B 37 C 18 A 38 D 19 D 39 C 20 B 40 A