Cambridge International Examinations Cambridge International General Certificate of Secondary Education

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1 * * ambridge International Examinations ambridge International eneral ertificate of Secondary Education IOLOY 0610/21 Paper 2 Multiple hoice (Extended) May/June 2017 dditional Materials: Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or H is recommended) 45 minutes RE HESE INSRUIONS FIRS Write in soft pencil. o not use staples, paper clips, glue or correction fluid. Write your name, entre number and candidate number on the nswer Sheet in the spaces provided unless this has been done for you. O NO WRIE IN NY ROES. here are forty questions on this paper. nswer all questions. For each question there are four possible answers,, and. hoose the one you consider correct and record your choice in soft pencil on the separate nswer Sheet. Read the instructions on the nswer Sheet very carefully. Each correct answer will score one mark. mark will not be deducted for a wrong answer. ny rough working should be done in this booklet. Electronic calculators may be used. he syllabus is approved for use in England, Wales and Northern Ireland as a ambridge International Level 1/Level 2 ertificate. his document consists of 15 printed pages and 1 blank page. I17 06_0610_21_VI_LIL/FP ULES 2017 [urn over

2 1 Which characteristic do all living organisms show? 2 breathing excretion photosynthesis tropism 2 he diagram shows some animal cells, as seen under the microscope. X What will be present at X? one cell membrane one cell wall two cell membranes two cell walls 3 Each of the diagrams shows an area of cytoplasm. Which is from a prokaryote? ULES /21/M/J/17

3 3 4 he diagram shows a section through a root. P Q R What are the levels of organisation of the labelled structures? cell organ tissue P Q R P R Q Q R P R Q P 5 Which characteristics are correct for both osmosis and diffusion? require a partially permeable membrane require a concentration gradient are energy consuming processes ULES /21/M/J/17 [urn over

4 4 ULES /21/M/J/17 6 Which diagram shows the structure of N? 7 he graph shows how enzyme activity is affected by temperature rate of reaction temperature / How can the change in activity between 40 and 55 be explained? Heat has killed the enzyme. he enzyme has been used up. he reactants are moving faster. he substrate is less likely to fit into the active site.

5 5 8 Four test-tubes are set up as shown. Which test-tube contains the most carbon dioxide after one hour? water water snail aquatic plant black polythene to keep out light light light light 9 he graph shows daily carbon dioxide uptake and transpiration by the plant gave americana. he plant is adapted to live in very dry conditions. O 2 uptake / mg per dm 2 per hour transpiration O 2 uptake transpiration / g H 2 O per dm 2 per hour What can be concluded from this graph? time of day / hours More stomata are closed during dark periods. More stomata are closed during light periods. here is no carbon dioxide uptake during dark periods. here is no water uptake during light periods. 10 In plants, which ions are used to make amino acids? magnesium nitrates phosphates potassium ULES /21/M/J/17 [urn over

6 6 11 he following symptoms can be caused by a dietary deficiency: bone pain dental problems fragile bones skeletal deformities lack of which nutrient is most likely to cause these symptoms? iron protein vitamin vitamin 12 Statements 1 4 describe stages in the development of cholera. 1 hloride ions are secreted in the gut. 2 Osmosis causes water to move into the gut. 3 he infected person becomes dehydrated. 4 oxins are produced by the pathogenic bacteria. What is the correct sequence of the four stages? ULES /21/M/J/17

7 7 13 he diagram shows a human tooth. Which statement best describes the function of this tooth? It bites into food. It cuts food. It grinds food. It tears food. 14 he graph shows the effect of ph on the activity of three different enzymes. X Y Z enzyme activity ph he table shows the ph of different parts of the alimentary canal. part of the alimentary canal ph mouth 7.0 stomach 2.0 small intestine 8.5 Which enzymes in the graph are likely to be protease enzymes? X, Y and Z X and Z only Y and Z only Z only ULES /21/M/J/17 [urn over

8 15 he diagrams show cross-sections through a root and a stem. 8 V W Y Z root stem Which labels are correct? V W Y Z phloem xylem xylem phloem phloem xylem phloem xylem xylem phloem xylem phloem xylem phloem phloem xylem 16 Which processes are used by root hairs to take up ions and water? ion uptake water uptake active transport osmosis diffusion active transport osmosis diffusion osmosis osmosis 17 Which of the following increases transpiration? air around the leaf with high humidity air molecules around the leaf with less kinetic energy an absence of light falling on the leaf water molecules in the leaf with more kinetic energy ULES /21/M/J/17

9 9 18 he diagram shows a human blood cell. What is its function? antibody production fibrinogen production oxygen transport phagocytosis 19 What is a disease-causing organism called? antibody host pathogen phagocyte 20 Which is a function of the cartilage in the trachea? gas exchange prevents collapse of the trachea produces mucus traps bacteria 21 Which is the equation for anaerobic respiration in yeast? 6 H 12 O H 5 OH + 2O 2 6 H 12 O 6 + 6O 2 6O 2 + 6H 2 O 2O H 5 OH 6 H 12 O 6 6O 2 + 6H 2 O 6 H 12 O 6 + 6O 2 ULES /21/M/J/17 [urn over

10 22 longitudinal section of the kidney and some associated structures have been labelled. Which labelling is correct? 10 cortex cortex renal artery renal vein ureter ureter medulla medulla medulla medulla renal artery ureter cortex ureter cortex renal artery 23 he steps to produce a reflex action where the hand is withdrawn from a hot object are shown. 1 Nerve impulses pass from the sensory neurone to the relay neurone. 2 Nerve impulses pass from motor neurone to the effector. 3 Nerve impulses pass from the receptor to the neurone. What is the correct sequence of steps? ULES /21/M/J/17

11 24 How many different kinds of cone receptor and rod receptor are there in the human retina? 11 types of cone receptor types of rod receptor What is the result of the release of adrenaline? blood glucose concentration pulse rate decreased decreased decreased increased increased decreased increased increased 26 Which statement about microorganisms is correct? acteria are killed by hydrochloric acid in the duodenum. acteria can become resistant to antibiotics. acterial infection and viruses are treated with antibiotics. acteria produce sugars that cause tooth decay. 27 ianthus flowers can be one of three different colours: red, pink or white. red flower is always homozygous and a white flower is always homozygous. Pink flowers are heterozygous. If a red and a white flower are crossed, what percentage of the offspring will be pink? 0% 25% 75% 100% 28 n alligator has 32 chromosomes in each of the cells of its nose. How many chromosomes will an alligator zygote contain? ULES /21/M/J/17 [urn over

12 29 Which hormone is produced by cells in the placenta of a developing fetus? 12 FSH LH testosterone progesterone 30 he diagram shows four types of birth control device. Which is not a barrier method of contraception? 31 Which blood component is destroyed in people who are HIV positive? lymphocytes phagocytes platelets red blood cells 32 What are stem cells? specialised cells that divide by meiosis to produce daughter cells specialised cells that divide by mitosis to produce daughter cells unspecialised cells that divide by meiosis to produce daughter cells unspecialised cells that divide by mitosis to produce daughter cells ULES /21/M/J/17

13 13 33 he list shows the diploid number of chromosomes of four organisms. fruit fly 8 human 46 potato 48 garden pea 14 What is the correct chromosome number of a male sex cell in each of these organisms? fruit fly human potato garden pea Which of these is a population? 1 all the insects in a rainforest 2 all the tigers in a rainforest 3 all the kapok trees in a rainforest 1, 2 and 3 1 only 1 and 2 only 2 and 3 only 35 he number of bacteria resistant to antibiotics is increasing. What has contributed to this situation? choosing the antibiotic carefully to match the strain of bacterium not completing the course of prescribed antibiotics tracing, testing and treating people who have been in contact with the infected person using antibiotics only when essential ULES /21/M/J/17 [urn over

14 14 36 he processes listed in 1 4 will affect the concentration of carbon dioxide in the atmosphere. 1 increased deforestation 2 increased forestation 3 decreased fossil fuel combustion 4 increased fossil fuel combustion Which processes would increase the concentration of carbon dioxide in the atmosphere? 1 and 3 1 and 4 2 and 3 2 and 4 37 he graph shows the changes in the populations of predator and prey over a period of time. Which point on the graph shows a decrease in predator population? number of individuals time 38 Which is a reason for using bacteria in biotechnology? acteria are found inside the human body. acteria can become resistant to antibiotics. acteria can make complex molecules. acteria reproduce slowly. 39 Why is yeast used in breadmaking? to produce alcohol to produce carbon dioxide to use up oxygen to use up sugar ULES /21/M/J/17

15 15 40 he graph shows the levels of dissolved oxygen and mineral ions in a river. t which point does raw sewage enter the river? direction of river flow dissolved oxygen levels distance along river mineral ions ULES /21/M/J/17

16 16 LNK PE 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 (ULES) 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. o avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the ambridge International Examinations opyright cknowledgements ooklet. his is produced for each series of examinations and is freely available to download at after the live examination series. ambridge International Examinations is part of the ambridge ssessment roup. ambridge ssessment is the brand name of University of ambridge Local Examinations Syndicate (ULES), which is itself a department of the University of ambridge. ULES /21/M/J/17

Cambridge International Examinations Cambridge International General Certificate of Secondary Education

Cambridge International Examinations Cambridge International General Certificate of Secondary Education *0369736826* ambridge International Examinations ambridge International General ertificate of Secondary Education IOLOGY 0610/22 Paper 2 Multiple hoice (Extended) May/June 2017 dditional Materials: Multiple