Cambridge International Examinations Cambridge International General Certificate of Secondary Education

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1 ambridge International Examinations ambridge International General ertificate of Secondary Education * * IOLOGY 0610/23 Paper 2 Multiple hoice (Extended) May/June 2017 dditional Materials: RE THESE INSTRUTIONS FIRST Multiple hoice nswer Sheet Soft clean eraser Soft pencil (type or H is recommended) 45 minutes 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 NOT WRITE IN NY ROES. There 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. The syllabus is approved for use in England, Wales and Northern Ireland as a ambridge International Level 1/Level 2 ertificate. This document consists of 16 printed pages. I17 06_0610_23/2RP ULES 2017 [Turn over

2 1 Which characteristic do all living organisms show? 2 breathing excretion photosynthesis tropism 2 The 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 Which structures are present in large numbers in cells with high rates of metabolism? chromosomes mitochondria ribosomes vacuoles ULES /23/M/J/17

3 3 4 The 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 /23/M/J/17 [Turn over

4 4 6 The bases on one of the strands of a N molecule have the sequence shown. --T--T-G What is the corresponding sequence of bases on the other strand? --T--T-G --G--G-T G-G--T-- T-T--G-- 7 Which statement describes the effect of temperature on enzymes? High temperatures denature enzymes making it difficult for substrate molecules to fit into the active site. High temperatures denature enzymes making it easy for substrate molecules to fit into the active site. Low temperatures denature enzymes making it difficult for substrate molecules to fit into the active site. Low temperatures denature enzymes making it easy for substrate molecules to fit into the active site. 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 ULES /23/M/J/17

5 9 The diagrams show the structure of four different cells from the leaf of a dicotyledonous plant. Which cell is a guard cell? 5 NOT TO SLE 10 Which mineral ion is absorbed by plant roots and used in the production of all amino acids? carbonate hydroxide magnesium nitrate 11 Which is the equation for photosynthesis? 6 H 12 O H 5 OH + 2O 2 6 H 12 O 6 + 6O 2 6O 2 + H 2 O 2 2 H 5 OH + 2O 2 6 H 12 O 6 6O 2 + 6H 2 O 6 H 12 O 6 + 6O 2 ULES /23/M/J/17 [Turn over

6 6 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 The infected person becomes dehydrated. 4 Toxins are produced by the pathogenic bacteria. What is the correct sequence of the four stages? The diagram shows a person s teeth. Some of their teeth are missing. What would the person find difficult? biting apples drinking water grinding meat tearing dry bread ULES /23/M/J/17

7 14 The graph shows the effect of ph on the activity of three different enzymes. 7 X Y Z enzyme activity The table shows the ph of different parts of the alimentary canal. ph 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 /23/M/J/17 [Turn over

8 15 The diagram shows a villus. Structures P and Q absorb different products of digestion. 8 P Q Which row identifies the products absorbed by P and Q? P Q amino acids glucose fatty acids maltose glucose fatty acids maltose amino acids 16 The diagram shows a leaf attached to the stem of a plant. sunlight X What do the arrows at X represent? X movement of amino acids in phloem movement of carbon dioxide in phloem movement of mineral ions in xylem movement of sucrose in xylem ULES /23/M/J/17

9 17 Which row shows what is carried, and in which direction, by the pulmonary vein? 9 what is carried direction deoxygenated blood from the heart deoxygenated blood to the heart oxygenated blood from the heart oxygenated blood to the heart 18 Which component of the blood produces antibodies? lymphocytes phagocytes plasma red blood cells 19 Which statement about antibodies is correct? reast milk contains antibodies and protects babies by giving them active immunity. Injections of antibodies give passive immunity against the disease scurvy. Insect repellents contain antibodies and give mosquitoes passive immunity against malaria. Injections of antibodies give passive immunity against some pathogens. 20 Which row shows the correct combination of muscle contractions and the pressure in the thorax when breathing out? internal intercostal muscles external intercostal muscles diaphragm pressure in thorax contracted contracted contracted high contracted relaxed relaxed high relaxed contracted contracted high relaxed relaxed relaxed low ULES /23/M/J/17 [Turn over

10 21 Which is not involved in removing the oxygen debt after a human has been exercising? 10 aerobic respiration of alcohol in the liver aerobic respiration of lactic acid in the liver continuation of deeper breathing continuation of faster heart rate 22 longitudinal section of the kidney and some associated structures have been labelled. Which labelling is correct? cortex cortex renal artery renal vein ureter ureter medulla medulla medulla medulla renal artery ureter cortex ureter cortex renal artery ULES /23/M/J/17

11 11 23 The diagram shows a synapse. X What do the dots at X represent? neurotransmitter receptor molecule synaptic cleft vesicle 24 Which is the light sensitive part of the eye? cornea iris lens retina 25 What is meant by the term phototropism? absorbing mineral ions using light energy directional growth in response to gravity directional growth in response to light making food using light energy 26 Which row shows the effects of excessive alcohol consumption? reaction time self-control anti-social behaviour quicker increased increased quicker reduced increased slower increased decreased slower reduced increased ULES /23/M/J/17 [Turn over

12 27 ianthus flowers can be one of three different colours: red, pink or white. 12 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 The diagram shows the ovary of a flower. pollen grain ovary Which process is shown in the diagram? cross-pollination fertilisation meiosis self-pollination 29 What is a function of the placenta? a barrier to nicotine a barrier to the rubella virus exchange of blood transfer of dissolved nutrients ULES /23/M/J/17

13 13 30 Some men do not produce healthy sperm cells. couple may choose to use the sperm of another man, a donor, in order for the woman to get pregnant. Which procedure involves inserting sperm into the vagina of a woman from a donor? artificial insemination (I) birth control in vitro fertilisation (IVF) vasectomy 31 Which blood component is destroyed in people who are HIV positive? lymphocytes phagocytes platelets red blood cells 32 Four of the processes involved in the production of a protein are shown. 1 mrn attaches to a ribosome. 2 mrn moves to the cytoplasm. 3 The ribosome assembles amino acids into a protein molecule. 4 n mrn copy of the gene is made. In which sequence do these events normally occur? Which statement about the sex chromosomes is correct? Men and women can inherit characteristics from genes carried on the X chromosome. Men and women can inherit characteristics from genes carried on the Y chromosome. Only men can inherit characteristics from genes carried on the X chromosome. Only women can inherit characteristics from genes carried on the Y chromosome. ULES /23/M/J/17 [Turn over

14 14 34 Which row best describes human blood groups? affected by environment has no intermediate phenotypes shows continuous variation shows discontinuous variation 35 The diagram represents part of an aquatic food web. aquatic plants tadpoles small shrimps water beetles fish frogs Which organisms are primary consumers in this food web? small shrimps and tadpoles tadpoles and frogs water beetles and fish water beetles and frogs ULES /23/M/J/17

15 15 36 The diagram shows part of the water cycle. clouds air T S plants water in soil rivers and lakes What are processes S and T? S T condensation drainage condensation evaporation evaporation precipitation evaporation transpiration 37 The 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 ULES /23/M/J/17 [Turn over

16 38 Which is an example of genetic engineering? 16 altering the N in crop plants so they are resistant to herbicides only breeding from crop plants that are resistant to insect pests production of insulin in the pancreas using yeast to produce ethanol for biofuels 39 Why is yeast used in breadmaking? to produce alcohol to produce carbon dioxide to use up oxygen to use up sugar 40 The 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 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. To 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. This 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 Group. 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 /23/M/J/17

Cambridge International Examinations Cambridge International General Certificate of Secondary Education

Cambridge International Examinations Cambridge International General Certificate of Secondary Education ambridge International Examinations ambridge International General ertificate of Secondary Education *3088341698* IOLOGY 0610/13 Paper 1 Multiple hoice (ore) May/June 2017 dditional Materials: RE THESE