(IGCSE) Biology May/June 2019 paper 3 variant 2
Question paper found on page 12 / 20 pages total, pdf
s human population between the years 1000–2000. 7000 6000 5000 human population 4000 / million 3000 2000 1000 0 1000 1100 1200 1300 1400 1500 year 1600 1700 1800 1900 2000 Fig. 6.1 (a) Describe the data shown in Fig. 6
(IGCSE) Biology May/June 2010 paper 3 variant 3
Question paper found on page 12 / 16 pages total, pdf
s Use 6 Carbon dioxide and methane are two important greenhouse gases. The effect of human activities in increasing the concentration of greenhouse gases, such as carbon dioxide and methane, is known as the enhanced greenhouse effect. Fig. 6.1 shows the concentrations of carbon dioxide and methane in the atmosphere over the past 1000 years. 1000 1200 1400 1600 1800 2000
(IGCSE) Biology May/June 2010 paper 3 variant 2
Question paper found on page 12 / 16 pages total, pdf
s Use 6 Carbon dioxide and methane are two important greenhouse gases. The effect of human activities in increasing the concentration of greenhouse gases, such as carbon dioxide and methane, is known as the enhanced greenhouse effect. Fig. 6.1 shows the concentrations of carbon dioxide and methane in the atmosphere over the past 1000 years. 1000 1200 1400 1600 1800 2000
(IGCSE) Biology Oct/Nov 2017 paper 4 variant 1
Question paper found on page 14 / 20 pages total, pdf
14 5 (a) Yeast can respire aerobically and anaerobically. State the balanced chemical equation for aerobic respiration by yeast. ...........................................................................................................
(IGCSE) Biology May/June 2019 paper 4 variant 3
Question paper found on page 4 / 20 pages total, pdf
m2 per s 50 45 B 40 35 30 25 A 20 15 10 5 0 0 250 500 750 1000 1250 1500 1750 2000 light intensity / arbitrary units Key: Fig. 2.1 © UCLES 2019 0610/43/M/J/19 Acarbon dioxide concentration 140 ppm Bcarbon dioxide concentration 1000 ppm
(IGCSE) Biology May/June 2014 paper 3 variant 2
Question paper found on page 8 / 16 pages total, pdf
8 4 Table 4.1 shows the composition of blood plasma. Table 4.1 component concentration in the plasma adrenaline / ng dm –3 10 – 100 fibrinogen / g dm –3 1.7 – 4.0 glucose / mg dm –3 700 – 1000 hydrogencarbonate ions / g dm –3 insulin / μg dm –3 1.1 – 1.4 0.33 – 0.40 lactic
(IGCSE) Biology May/June 2019 paper 4 variant 3
Question paper found on page 6 / 20 pages total, pdf
6 (iv) Explain the effect of increasing light intensity on the rate of photosynthesis when the concentration of carbon dioxide was 1000 ppm. Use the term limiting factor in your answer. .................................................................................
(IGCSE) Biology Oct/Nov 2013 paper 1 variant 1
Question paper found on page 19 / 20 pages total, pdf
19 40 The graph shows the quantities of pesticides that accumulate in four populations, each at different trophic levels in a food chain. Which population is most likely to be herbivores? 1600 1600 1400 1200 quantity of pesticide accumulated / parts per million 1000 800 600 400 200 200 0 © UCLES 2013 10 0.02 A 0
(IGCSE) Biology Feb/March 2016 paper 4 variant 2
Question paper found on page 4 / 20 pages total, pdf
4 0610/42/F/M/16 © UCLES 2016 (c) Table 1.1 shows different specialised cells and the average number of mitochondria each cell contains. Table 1.1 specialised cell type average number of mitochondria liver cell 1000–2000 red blood cell 0 sperm cell 25–75 heart muscle cell 1500 Explain the differences between the average numbers of mitochondria in the cells
(IGCSE) Biology Oct/Nov 2011 paper 2 variant 1
Question paper found on page 16 / 24 pages total, pdf
6.1. Table 6.1 © UCLES 2011 time of day / hours water uptake / g per hour water loss / g per hour 0400 7 2 0700 11 8 1000 18 24 1300 24 30 1600 24 24 1900 20 13 2200 11 5 0610/21/O/N/11 For Examiner's Use
(IGCSE) Biology May/June 2016 paper 3 variant 1
Question paper found on page 5 / 20 pages total, pdf
5 0610/31/M/J/16 © UCLES 2016 [Turn over (b) Fig. 2.2 shows the average body mass and Table 2.1 shows the average lifespan of males in six species of mammal. 5000 6000 4000 3000 2000 1000 0 average male body mass / kg species elephant rhinoceros hippopotamus giraffe bison moose Fig. 2.2 Table
(IGCSE) Biology May/June 2010 paper 3 variant 2
Question paper found on page 13 / 16 pages total, pdf
s Use (a) Using information in Fig. 6.1, describe the trend in the concentrations of carbon dioxide and methane over the past 1000 years. [3] (b) Suggest and explain reasons for the trend in the concentrations of carbon dioxide and methane that you described in (a) . [4] (c) Explain how gases, such as those shown in Fig. 6.1, contribute to the greenhouse
(IGCSE) Biology Oct/Nov 2020 paper 2 variant 1
Question paper found on page 3 / 16 pages total, pdf
3 4 The diagram shows an image of a chloroplast. The image is 5 cm long. The actual length of the chloroplast is 5 m. What is the magnification of the image? 10 A 5 B 1000 C 10 000 D 100 000 What are features of osmosis? diffusion is involvedrequires cell wallsrequires a partially permeable membraneA key B = yes C = no D
(IGCSE) Biology May/June 2014 paper 2 variant 2
Question paper found on page 9 / 20 pages total, pdf
9 0610/22/M/J/14 © UCLES 2014 [Turn over (b) Fig. 5.2 shows how much energy is required, each day, by different people. 5 energy requirement / × 1000 kJ per day 10 0 15 20 young child teenage girl teenage boy farm worker hospital patient male office worker female office worker elderly person person Fig. 5.2 (i) Use
(IGCSE) Biology May/June 2010 paper 3 variant 3
Question paper found on page 13 / 16 pages total, pdf
s Use (a) Using information in Fig. 6.1, describe the trend in the concentrations of carbon dioxide and methane over the past 1000 years. [3] (b) Suggest and explain reasons for the trend in the concentrations of carbon dioxide and methane that you described in (a) . [4] (c) Explain how gases, such as those shown in Fig. 6.1, contribute to the greenhouse
(IGCSE) Biology Oct/Nov 2016 paper 4 variant 2
Question paper found on page 17 / 20 pages total, pdf
17 (e) HIV invades specific lymphocytes that coordinate immune responses. Fig. 5.1 shows the change in numbers of these lymphocytes following an HIV infection that has not been treated. 1200 1000 800 lymphocytes / cells per mm 3 600 400 200 0 0 1 2 3 4 5 6 time / years 7 8 9 10 Fig. 5.1 (i) Describe the
(IGCSE) Biology May/June 2014 paper 2 variant 1
Question paper found on page 6 / 20 pages total, pdf
6 (c) When the heart beats, it pumps blood round the body. Fig. 2.2 shows the components of blood as seen through a light microscope. ) * + Fig. 2.2 Y: \ASD\Sciences\Biology\biologyimages\blood\humblood×1000 Name the blood components labelled F, G and H in Fig. 2.2. State one function for each component. Write your answers in Table 2.1. Table
(IGCSE) Biology Oct/Nov 2018 paper 6 variant 1
Question paper found on page 11 / 16 pages total, pdf
11 (ii) Calculate the actual average diameter of capillary A using your answer to 2(a)(i) and the formula: magnification = average diameter of capillary A on Fig. 2.1 actual average diameter of capillary A 1 mm = 1000 μm Give your answer to the nearest whole μm. .....................................
(IGCSE) Biology Oct/Nov 2018 paper 5 variant 1
Question paper found on page 9 / 12 pages total, pdf
9 (ii) Calculate the actual average diameter of capillary A using your answer to 2(a)(i) and the formula: magnification = average diameter of capillary A on Fig. 2.1 actual average diameter of capillary A 1 mm = 1000 μ m Give your answer to the nearest whole μ m. ....................................
(IGCSE) Biology Oct/Nov 2016 paper 2 variant 3
Question paper found on page 3 / 16 pages total, pdf
3 5 The diagram shows an image of a chloroplast. The image is 5 cm long. The actual length of the chloroplast is 5 µm. What is the magnification of the image? ×10 A 6 B ×1000 C ×10 000 D ×100 000 The diagram shows a plant cell which has lost water to its surroundings by osmosis. Which part is the partially permeable membrane
(IGCSE) Biology Oct/Nov 2015 paper 2 variant 1
Question paper found on page 19 / 20 pages total, pdf
19 0610/21/O/N/15 © UCLES 2015 (b) Fig. 10.2 shows the human population growth curve since the year 1 A.D. 0 year 1 2 3 4 5 6 7 population / billions 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1
(IGCSE) Biology Oct/Nov 2012 paper 3 variant 2
Question paper found on page 15 / 20 pages total, pdf
s Use 7000 total oil coal natural gas 6000 5000 carbon emitted 4000 by burning fossil fuels / 3000 million tonnes per year 2000 1000 1800 1825 1850 1875 1900 1925 1950 1975 0 2000 year Fig. 5.1 (a) Use the information in Fig. 5.1 to describe
(IGCSE) Biology May/June 2018 paper 3 variant 1
Question paper found on page 8 / 20 pages total, pdf
8 4 (a) Respiration releases energy. Write the word equation for aerobic respiration. ........................................................................................................................
(IGCSE) Biology May/June 2006 paper 6
Question paper found on page 5 / 12 pages total, pdf
s Use (i) Complete Table 1.1 by calculating the rise in temperature. [1] Table 1.1 mass of seed / g volume of water / cm 3 temperature at the start / ºC highest temperature / ºC rise in temperature / ºC 0.5 20 29 79 The energy contained in the seed can be calculated using the formula below. energy = volume of water Χ rise in
(IGCSE) Biology Feb/March 2015 paper 3 variant 2
Question paper found on page 21 / 24 pages total, pdf
21 6 Fig. 6.1 shows changes in the global human population between 1910 and 2010. 8000 7000 6000 5000 population (in millions) 4000 3000 2000 1000 0 1910 1930 1950 1970 1990 2010 year Fig. 6.1 (a) Improved food production has contributed to the increase
(IGCSE) Biology May/June 2004 paper 2
Question paper found on page 11 / 16 pages total, pdf
s Use .................................................................................................................................. ...............
(IGCSE) Biology For examination from 2016 paper 2
Specimen question paper found on page 3 / 18 pages total, pdf
3 © UCLES 2014 0610/02/SP/16 [Turn over 3 The diagram shows a high-power drawing of a plant cell. The distance between X and Y on the diagram below is 80 mm. The actual length of the cell between X and Y was 160 μ m. X Y What is the magnification of the cell? A × 50 B × 100 C ×
(IGCSE) Biology Oct/Nov 2009 paper 3 variant 2
Question paper found on page 18 / 20 pages total, pdf
s Use (e) The soya bean aphid is an insect pest of soya bean plants in North America. The aphids can show an exponential growth rate where populations can double in two to three days under favourable conditions. Fig. 6.2 shows the growth of soya bean aphids in a field in North America during the growing season. 0 10203040506070 7000 6000 5
(IGCSE) Biology Oct/Nov 2011 paper 3 variant 1
Question paper found on page 16 / 20 pages total, pdf
00 800 700 mean number of brown plant hoppers per m 2 600 500 400 300 200 100 0 0 10 20 30 40 sprays with pesticide 50 60 70 80 days after transplanting rice Fig. 6.1 (a) Define the term population. [2] © UCLES 2011 0610/31/O/N/11 For Examiner's Use
(IGCSE) Biology Oct/Nov 2009 paper 3 variant 1
Question paper found on page 18 / 20 pages total, pdf
s Use (e) The soya bean aphid is an insect pest of soya bean plants in North America. The aphids can show an exponential growth rate where populations can double in two to three days under favourable conditions. Fig. 6.2 shows the growth of soya bean aphids in a field in North America during the growing season. 0 10203040506070 7000 6000 5
(IGCSE) Biology Oct/Nov 2017 paper 2 variant 3
Question paper found on page 3 / 20 pages total, pdf
3 3 The diagrams show structures associated with a leaf. thick cellulose wall nucleus vacuole cytoplasm leaf leaf stalk detail What is the level of organisation of the part shown in detail? 4 A cell B organ C organ system D tissue The diagram shows a pollen grain of a rice plant. The size of the image is 40 mm 40 µm The actual length of the pollen grain is 40 µ
(IGCSE) Biology May/June 2019 paper 4 variant 3
Question paper found on page 5 / 20 pages total, pdf
5 (i) Suggest and explain why the scientists kept the temperature of the leaves at 20 °C while they recorded results. .......................................................................................................
(IGCSE) Biology Oct/Nov 2019 paper 2 variant 1
Question paper found on page 3 / 16 pages total, pdf
3 4 5 Which features do animal cells share with plant cells? chloroplastcytoplasmnucleusA key B = yes C = no D The diagram shows a cell with an actual size of 30 µm. 30 mm What is the magnification of the diagram? ×10 A 6 B ×100 C ×1000 D ×10 000 Red blood cells were placed in pure water. Movement of water across the
(IGCSE) Biology May/June 2019 paper 4 variant 1
Question paper found on page 6 / 20 pages total, pdf
s A 370 ppm CO2 20 15 10 5 0 10 20 30 40 temperature of leaves / °C Fig. 2.2 (i) State one environmental factor that should have been kept constant in this investigation. ...............................................................
(IGCSE) Biology Oct/Nov 2014 paper 3 variant 2
Question paper found on page 12 / 24 pages total, pdf
2000 vessels / cm 2 1000 0 mean blood pressure / kPa 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 pressure speed of the blood / cm s –1 50 velocity 40 30 20 10 0 aorta arterioles arteries capillaries Fig. 4.2 © UCLES 2014 0610/32/O/N/14 veins vena cava
(IGCSE) Biology May/June 2016 paper 1 variant 3
Question paper found on page 13 / 16 pages total, pdf
13 © UCLES 2016 0610/13/M/J/16 [Turn over 36 The graph shows the increase in the human population of the world since 1630. 4000 3000 2000 1000 0 5000 6000 1630 1730 1830 1930 2030 population / millions year What was the longest time taken for the population
(IGCSE) Biology Oct/Nov 2020 paper 2 variant 3
Question paper found on page 3 / 16 pages total, pdf
S R Q P Which parts labelled on the photomicrograph indicate that this is a plant cell? A 4 P and R B P and S C Q and R D Q and S The diagram shows an image of a chloroplast. The image is 5 cm long. The actual length of the chloroplast is 5 m. What is the magnification of the image? 10 A 5 B 1000
(IGCSE) Biology Oct/Nov 2016 paper 1 variant 2
Question paper found on page 14 / 16 pages total, pdf
14 37 The graph shows how the world population of humans is increasing. world population size 1000 1250 1500 1750 time / years What has contributed to this increase? A a high death rate in developing countries B drought leading to famine C improved medical care D the widespread use of contraception 38 Why is yeast used in bread-making? A Aerobic respiration produces alcohol. B
(IGCSE) Biology Oct/Nov 2012 paper 3 variant 1
Question paper found on page 14 / 24 pages total, pdf
s results are shown in Table 4.1. For Examiner's Use Table 4.1 concentration of sodium hydrogencarbonate solution / mol per dm 3 t, time taken for meniscus to travel 50 mm / s rate of photosynthesis (1000/t) 0.00 4998 0.20 0.01 2500 0.40 0.02 1175 0.85 0.05 350 2.86 0
(IGCSE) Biology May/June 2015 paper 3 variant 3
Question paper found on page 16 / 20 pages total, pdf
16 (d) Clomiphene citrate is a fertility drug that has been available for over 50 years. As part of a fertility treatment clomiphene citrate is taken once a day (daily dose) for about five days. Researchers investigated the use of the drug in Denmark between 1974 and 1993. The results of their study are shown in Fig. 5.3. 1800 1600 1400
(IGCSE) Biology Oct/Nov 2014 paper 5 variant 3
Confidential instructions found on page 3 / 8 pages total, pdf
of a clock or timer (vii) means of labelling beakers (viii) access to paper towels (in case of spillages) The Supervisor ( not the Invigilator) should carry out the practical aspects of Question 1 and record their results in the space provided in the Supervisor’s Report. This must be done during the examination, using the same apparatus and reagents as the candidates but out of sight of the candidates.
(IGCSE) Biology May/June 2021 paper 2 variant 3
Question paper found on page 15 / 16 pages total, pdf
15 40 The graph shows the annual deforestation and annual net release of carbon dioxide from an area of tropical forest between 1990 and 2001. 3.01400 2.51200 1000 annual 2.0 deforestation 1.5 / million hectares 1.0 annual net release of 600 carbon dioxide / million tonnes 400 800 0.5 0.0 200 1990 1
(IGCSE) Biology Oct/Nov 2011 paper 3 variant 1
Question paper found on page 18 / 20 pages total, pdf
of brown plant hoppers in these cages over a period of time. 6000 5000 cages closed to predators 4000 mean number of brown plant hoppers per cage 3000 2000 1000 cages open to predators 0 0 10 20 30 time / days Fig. 6.2 © UCLES 2011 0610/31/O/N/11 40 50 For Examiner's Use
(IGCSE) Biology Oct/Nov 2020 paper 2 variant 2
Question paper found on page 2 / 16 pages total, pdf
S R Q P Which parts labelled on the photomicrograph indicate that this is a plant cell? A 4 P and R B P and S C Q and R D Q and S The diagram shows an image of a chloroplast. The image is 5 cm long. The actual length of the chloroplast is 5 m. What is the magnification of the image? A 10 © UCLES 2020 B
(IGCSE) Biology Oct/Nov 2012 paper 3 variant 1
Question paper found on page 13 / 24 pages total, pdf
s Use light + + [3] chlorophyll A student investigated the effect of increasing the concentration of carbon dioxide on the rate of photosynthesis of Cabomba, an aquatic plant. Fig. 4.1 shows the apparatus that the student used. lamp syringe gas bubble sodium hydrogencarbonate (NaHCO 3 ) solution Cabomba plastic tubing meniscus ruler capillary tubing Fig. 4.1 The concentration of carbon dioxide in the water surrounding the plant was
(IGCSE) Biology May/June 2015 paper 2 variant 3
Question paper found on page 14 / 20 pages total, pdf
14 8 Fig. 8.1 shows how the human population changed between the year 1500 and the year 2000. 1400 China 1200 population / millions 1000 India 800 Africa 600 Latin America 400 Western Europe United States 200 0 1500 1550 1600 1650 1700 1750 1800 1850 1900 1
(IGCSE) Biology May/June 2020 paper 5 variant 3
Mark scheme found on page 5 / 7 pages total, pdf
s ; all four results recorded ; expected trend: A has a shorter time than D ;4 1(a)(iv)conclusion consistent with results higher concentration, diffuses fastest / has the shortest time ; ora1 1(a)(v)to see if water alone causes the colour change / as a control ;1 1(a)(vi)hazard: cutting cubes; precaution cut on surface / cut away from hand ; OR hazard:
(IGCSE) Biology Feb/March 2021 paper 4 variant 2
Question paper found on page 14 / 20 pages total, pdf
. [2] 0.30 0.25 rate of 0.20 oxygen production / cm3 per m2 per s 0.15 0.10 0.05 0.00 0 200 400 600 800 1000 1200 1400 concentration of carbon dioxide / μmol per dm3 Fig. 4.2 © UCLES 2021 0610/42/F/M/21 1600
(IGCSE) Biology Oct/Nov 2017 paper 6 variant 1
Question paper found on page 9 / 12 pages total, pdf
9 (b) (i) Measure the diameters of the three marked blood cells, along both the lines drawn on each of the cells, in Fig. 2.1. Record these measurements in Table 2.1. Add the missing units to Table 2.1. Calculate the average diameter for each type of blood cell and write your results in Table 2.1. Table 2.1 type of blood cell diameter 1 diameter 2
(IGCSE) Biology May/June 2006 paper 5
Mark scheme found on page 2 / 3 pages total, pdf
S1 and volume of water recorded ; 3 (iii) rise in temperature substituted ; other values substituted ; correct value calculated ; 3 (iv) answer to (iii) divided by 1000 ; 1 (b) (i) heat, escapes to surroundings / does not all go to heating water ; food does not all burn ; gives lower estimate ; max 2 (ii) suggestion to direct heat ; suggestion to
(IGCSE) Biology Feb/March 2017 paper 4 variant 2
Question paper found on page 10 / 16 pages total, pdf
10 4 (a) Water is one requirement for photosynthesis. State two other requirements needed by plants to carry out photosynthesis. 1 .......................................................................................................
(IGCSE) Biology Oct/Nov 2013 paper 1 variant 2
Question paper found on page 18 / 20 pages total, pdf
18 38 The chart shows which species of different animals are present in rivers of different pH. species trout bass key perch present frogs absent salamanders clams crayfish snails mayflies 6.5 6.0 5.5 5.0 4.5 4.0 pH Which conclusion can be drawn from this information? A Both frogs and mayflies can live in more acidic river water than trout. B Clams and snails are most affected by
(IGCSE) Biology Oct/Nov 2017 paper 4 variant 3
Question paper found on page 12 / 20 pages total, pdf
12 4 The Canadian Government were concerned about overfishing at the Grand Banks in the Atlantic Ocean. As a result, commercial fish stocks were monitored from 2002 until 2013. The population data for four species of fish are shown in Fig. 4.1. number of fish / million number of fish / million number of fish / million 140 120 100 80 60 40 2
(IGCSE) Biology Oct/Nov 2015 paper 3 variant 2
Question paper found on page 16 / 24 pages total, pdf
16 0610/32/O/N/15 © UCLES 2015 (ii) Describe the path taken by a carbon dioxide molecule after it has passed through the stomata during the daytime until it becomes part of a glucose molecule. ................................................................
(IGCSE) Biology Oct/Nov 2017 paper 5 variant 1
Question paper found on page 9 / 12 pages total, pdf
9 (b) (i) Measure the diameters of the three marked blood cells, along both the lines drawn on each of the cells, in Fig. 2.1. Record these measurements in Table 2.1. Add the missing units to Table 2.1. Calculate the average diameter for each type of blood cell and write your results in Table 2.1. Table 2.1 type of blood cell diameter 1 diameter 2
(IGCSE) Biology May/June 2017 paper 6 variant 3
Question paper found on page 4 / 12 pages total, pdf
4 (d) Identify two sources of error in this investigation and suggest a possible improvement for each error. error .............................................................................................................
(IGCSE) Biology May/June 2018 paper 4 variant 2
Mark scheme found on page 5 / 11 pages total, pdf
s) E premolars F molars ;;; 1(a)(ii) mechanical ; 1 1(b)(i) acid ; 1 A carbon dioxide 1(b)(ii) enamel ; dentine ; 2 (named) sugar ; 1 1(c) Question Answer Marks 2(a)(i) the probability of an organism will surviving and reproducing (in the environment in which it is found) / AW ; 1 2(a)(ii) aerial
(IGCSE) Biology May/June 2011 paper 2 variant 1
Question paper found on page 11 / 16 pages total, pdf
s Use decomposers ? kJ primary consumers 8000 kJ secondary consumers 1000 kJ Fig. 6.1 About 1% of the light energy reaching the ocean is converted to chemical energy by the phytoplankton. The phytoplankton produce sugars, fats and proteins. (i) Name the process that changes light energy to chemical energy. [1] (ii) Name the chemical in the phytoplankton that absorbs light energy. [1] (
(IGCSE) Biology Feb/March 2018 paper 2 variant 2
Question paper found on page 14 / 16 pages total, pdf
14 34 The graph shows the human population of the world for the last 2000 years. 6000 4000 population / million 2000 P 0 0 1000 2000 time / years What is the phase identified by P? A death B exponential (log) C lag D stationary 35 Some of the characteristics of bacteria are listed. 1 can make complex molecules 2 can
(IGCSE) Biology Oct/Nov 2012 paper 3 variant 1
Mark scheme found on page 6 / 11 pages total, pdf
Page 6 Question 4 Mark Scheme IGCSE – October/November 2012 Expected Answers Marks (a) CO 2 + H 2 O; Syllabus 0610 Paper 31 Additional Guidance marks for: correct formulae for carbon dioxide and water correct formulae for glucose and oxygen balancing the equation C 6 H 12 O 6 + O 2 ; ignore word equation 6O 2 , 6CO 2 , 6H 2 O ;
(IGCSE) Biology Oct/Nov 2010 paper 3 variant 1
Question paper found on page 16 / 20 pages total, pdf
s Use 6 Daphnia is a small arthropod animal found in freshwater. The population of Daphnia in a lake in Oregon (in the northern temperate region) was sampled at regular intervals between March and November in 2006 and 2007. During 2006 there were very few Daphnia in any of the samples. At the end of that year fish were removed from the lake. • The population of Daphnia
(IGCSE) Biology May/June 2017 paper 5 variant 3
Question paper found on page 4 / 12 pages total, pdf
4 (b) Explain why the starch solution was added to the vegetable juice extracts. .......................................................................................................................
(IGCSE) Biology May/June 2007 paper 3
Mark scheme found on page 4 / 17 pages total, pdf
s) ; R starch unqualified [max. 2] (b) (i) B ; E ; F ; A ; D ; [5] (ii) award two marks if correct answer (x 990 to 1010) is given, ignore units ecf – award one mark if incorrect measurement or 10 cm is divided by 0.1 if answer is correct put two ticks on answer if answer is incorrect but
(IGCSE) Biology May/June 2018 paper 2 variant 1
Question paper found on page 13 / 16 pages total, pdf
13 34 Which statement describes the relationship between evolution and natural selection? A A change in the adaptive features of a population over time causes evolution, resulting in natural selection. B Evolution causes a change in the adaptive features of a population over time, resulting in natural selection. C Evolution causes natural selection, resulting in a change in the adaptive features of a population over time. D Evolution is the change
(IGCSE) Biology May/June 2006
Examiner report found on page 11 / 15 pages total, pdf
s Reports or a seating plan. The Supervisor’s Reports are an invaluable resource to examiners as they allow some alternative marking points to be credited in special circumstances, depending on the information given by the Centre. It could be the case that an experiment behaved in a way that was not anticipated or that candidates were supplied with a specimen that had features that were not expected and so had not been c
(IGCSE) Biology May/June 2006 paper 6
Mark scheme found on page 2 / 3 pages total, pdf
S larger size than Fig.1.2, ; P accurate proportion; O clear outline; Label: pod (fruit); nut (seed); stalk (flowering); [max: 5] (ii) length of drawing ............ mm / cm and length of Fig.1.2 ... mm / cm; magnification x..............; [3] (b) (i) rise in temperature
(IGCSE) Biology Oct/Nov 2011 paper 3 variant 1
Mark scheme found on page 9 / 10 pages total, pdf
Page 9 Question 6 (a) (b) Expected Answers (d) Marks group of organisms / individuals, of same species ; can interbreed ; live in same area / habitat (at same time) ; 1 numbers of brown plant hoppers remain low, up to 40 days / day 40 ; low numbers when spraying occurs (days 15 to 38) ; rapid increase when spraying stopped / AW ; then,
(IGCSE) Biology Oct/Nov 2016
Examiner report found on page 10 / 50 pages total, pdf
Cambridge International General Certificate of Secondary Education 0610 Biology November 2016 Principal Examiner Report for Teachers Question 3 Dichotomous keys were handled competently by nearly all candidates. Question 4 Cell structure is clearly a topic that is well understood by the majority of candidates. Question 5 It was clear that many candidates are not comfortable with calculating magnifications. With the knowledge that 1 µm = 1000 mm, and
(IGCSE) Biology May/June 2007
Examiner report found on page 8 / 27 pages total, pdf
s linked to intoxication that were discounted: examples included alcohol poisoning and drowsiness. Many such answers were acceptable in (c)(ii) rather than here. Answers that dealt wi th damage to the kidneys did not gain credit. (ii) Almost all candidates gave the correct response here – 1000 cm 3 . Incorrect answers were 500 and 2000 cm 3 . (b) (i) This question tended
(IGCSE) Biology May/June 2007 paper 3
Mark scheme found on page 12 / 17 pages total, pdf
s baby / fetal alcohol syndrome / AW ; e.g. low birth weight / poor mental development 9 increased risk of miscarriage ; 10 malnutrition / named deficiency disease(s) ; 11 obesity / weight gain ; 12 loss in weight / wasting ; [max. 2] (ii) (500 x 2 =) 1000 (cm 3 ) ; [1] (b) (i) (nutrients are)
(IGCSE) Biology May/June 2007 paper 3
Mark scheme found on page 5 / 17 pages total, pdf
s baby / fetal alcohol syndrome / AW ; e.g. low birth weight / poor mental development 9 increased risk of miscarriage ; 10 malnutrition / named deficiency disease(s) ; 11 obesity / weight gain ; 12 loss in weight / wasting ; [max. 2] (ii) (500 x 2 =) 1000 (cm 3 ) ; [1] (b) (i) (nutrients are)
(IGCSE) Biology Feb/March 2018
Examiner report found on page 9 / 17 pages total, pdf
Cambridge International General Certificate of Secondary Education 0610 Biology March 2018 Principal Examiner Report for Teachers BIOLOGY Paper 0610/42 Theory (Extended) Key messages A high standard of scientific knowledge and understanding was displayed by many of the candidates. Many candidates should be congratulated for their clear, articulate and accurate responses. It is important to understand the meaning of command words given in the question paper. There
(IGCSE) Biology Oct/Nov 2015 paper 5 variant 3
Confidential instructions found on page 3 / 8 pages total, pdf
s solution, in the usual dispensing bottle (with dropping pipette), as used for food testing, labelled Benedict’s solution (v) Biuret reagent, in the usual dispensing bottle (with dropping pipette), as used for food testing, labelled Biuret reagent (vi) Iodine in potassium iodide solution, in the usual dispensing bottle (with dropping pipette), as used for food testing, labelled Iodine solution (vii) one large beaker containing
(IGCSE) Biology May/June 2007
Examiner report found on page 15 / 27 pages total, pdf
s linked to intoxication that were discounted: examples included alcohol poisoning and drowsiness. Many such answers were acceptable in (c)(ii) rather than here. Answers that dealt wi th damage to the kidneys did not gain credit. (ii) Almost all candidates gave the correct response here – 1000 cm 3 . Incorrect answers were 500 and 2000 cm 3 . (b) (i) This question tended
(IGCSE) Biology Oct/Nov 2011
Examiner report found on page 9 / 57 pages total, pdf
Cambridge International General Certificate of Secondary Education 0610 Biology November 2011 Principal Examiner Report for Teachers © 2011 (ii) Candidates should have given two times when the two curves intersected. One of these was clear from the table, 1600 hours. A surprising number quoted only one time and others selected times such as 1000 or 1300 hours when the lines on their graphs were
(IGCSE) Biology May/June 2011
Examiner report found on page 7 / 45 pages total, pdf
Cambridge International General Certificate of Secondary Education 0610 Biology June 2011 Principal Examiner Report for Teachers © 2011 In (c) most candidates understood the role of calcium in t he hardening and strengthening of bones and teeth. Some candidates correctly gave the commonest deficien cy problem which is rickets in developing bones and the bones bending (rather than breaking). Some candidates also realised that a lack of calcium