The challenges of size: OCR GCSE Combined Science A questions

Every OCR GCSE Combined Science A exam question on B2.2 The challenges of size, 2018–2025, with its mark scheme and examiner’s report.

All 147 questions on The challenges of size, as a list

June 2025, Biology Paper 1 Foundation, Q1 (1 mark): Which chamber of the heart pumps blood to the kidneys? A Left atrium B Left ventricle C Right atrium D Right ventricle Your answer [1]
June 2025, Biology Paper 1 Foundation, Q2 (1 mark): What is the shape of a red blood cell? A Biconcave B Cuboidal C Cylindrical D Spherical Your answer [1]
June 2025, Biology Paper 1 Foundation, Q7 (1 mark): Which label is pointing to the left ventricle? C A D B Your answer [1]
June 2025, Biology Paper 1 Foundation, Q15(a) (1 mark): Describe the role of the valves in the heart. [1]
June 2025, Biology Paper 1 Foundation, Q15(b) (2 marks): Explain why the heart is described as a ‘double pump’ in mammals. [2]
June 2025, Biology Paper 1 Foundation, Q15(c) (3 marks): Describe the pathway of a red blood cell as it travels from the right side of the heart to the left side. [3]
June 2025, Biology Paper 1 Foundation, Q17(a)(i) (1 mark): State the name of this apparatus. [1]
June 2025, Biology Paper 1 Foundation, Q17(a)(ii) (2 marks): Describe how the student can use this apparatus to find the rate that the gas bubble moves in cm/minute. [2]
June 2025, Biology Paper 1 Foundation, Q17(a)(iii) (1 mark): To find this estimate of water uptake in 10 minutes, the student took measurements for 60 minutes and divided their answer by 6. Suggest why they did this. [1]
June 2025, Biology Paper 1 Foundation, Q17(a)(iv) (1 mark): The student wanted to check the reproducibility of their results. State one way that they could do this. [1]
June 2025, Biology Paper 1 Foundation, Q17(a)(v) (2 marks): The student wants to extend their experiment to investigate the effect of leaf area on the rate of water uptake. Suggest how the student could measure the area
June 2025, Biology Paper 1 Foundation, Q17(b) (2 marks): The student then investigates the number of stomata on the upper and the lower surfaces of one of the leaves from the shoot. The table shows their results. Numb
June 2025, Biology Paper 1 Foundation, Q17(c)(i) (1 mark): Use this value and the graph to find the transpiration rate for this plant. Transpiration rate = arbitrary units [1]
June 2025, Biology Paper 1 Foundation, Q17(c)(ii) (2 marks): Suggest two conclusions that can be made from the trends shown in this graph. 1 2 [2]
June 2025, Biology Paper 7 Higher, Q11(a)(i) (1 mark): State the name of this apparatus. [1]
June 2025, Biology Paper 7 Higher, Q11(a)(ii) (2 marks): Describe how the student can use this apparatus to find the rate that the gas bubble moves in cm/minute. [2]
June 2025, Biology Paper 7 Higher, Q11(a)(iii) (1 mark): To find this estimate of water uptake in 10 minutes, the student took measurements for 60 minutes and divided their answer by 6. Suggest why they did this. [1]
June 2025, Biology Paper 7 Higher, Q11(a)(iv) (1 mark): The student wanted to check the reproducibility of their results. State one way that they could do this. [1]
June 2025, Biology Paper 7 Higher, Q11(a)(v) (2 marks): The student wants to extend their experiment to investigate the effect of leaf area on the rate of water uptake. Suggest how the student could measure the area
June 2025, Biology Paper 7 Higher, Q11(b) (2 marks): The student then investigates the number of stomata on the upper and the lower surfaces of one of the leaves from the shoot. The table shows their results. Numb
June 2025, Biology Paper 7 Higher, Q11(c)(i) (1 mark): Use this value and the graph to find the transpiration rate for this plant. Transpiration rate = arbitrary units [1]
June 2025, Biology Paper 7 Higher, Q11(c)(ii) (2 marks): Suggest two conclusions that can be made from the trends shown in this graph. 1 2 [2]
June 2025, Biology Paper 7 Higher, Q15(a) (3 marks): Explain how the left ventricle is adapted to carry out its function. [3]
June 2025, Biology Paper 7 Higher, Q15(b) (2 marks): Explain why small organisms like amoeba do not need a transport system. [2]
June 2025, Biology Paper 8 Higher, Q16(b) (2 marks): In humans, the malarial protist reproduces inside red blood cells. This causes the haemoglobin to be digested. Explain why this will make an infected person fee
June 2024, Biology Paper 1 Foundation, Q8 (1 mark): The graphs show how the rate of water uptake in plants can change. Which graph shows the correct effect of increased air movement on the rate of water uptake? A
June 2024, Biology Paper 1 Foundation, Q11(a) (3 marks): Complete the sentences about red blood cells. Use words from the list. biconcave chlorophyll haemoglobin helix nitrogen oxygen water Red blood cells are adapted
June 2024, Biology Paper 1 Foundation, Q11(c) (4 marks): This diagram shows the human heart. F A E B D C The table shows some information about the heart. Use the diagram to complete the table. Label letter Name of pa
June 2024, Biology Paper 1 Foundation, Q14(a)(i) (2 marks): Calculate the surface area to volume ratio of agar cube C. Write your answer in the table. [2]
June 2024, Biology Paper 1 Foundation, Q15(a) (2 marks): The arrows show direction of movement inside the vessels. Give two reasons why Fig. 15.2 shows phloem vessels. 1 2 [2]
June 2024, Biology Paper 1 Foundation, Q15(b) (2 marks): Compare the type of substances transported in xylem and phloem vessels. [2]
June 2024, Biology Paper 1 Foundation, Q15(c) (2 marks): Explain how the transport of substances through xylem changes on a warm day compared with a cold day. [2]
June 2024, Biology Paper 2 Foundation, Q14(b) (3 marks): Explain how low moisture content in soil affects transpiration in plants. [3]
June 2024, Biology Paper 7 Higher, Q7 (1 mark): The photograph shows two different blood vessels. Blood vessel S Blood vessel T Which statement about these blood vessels is correct? A Blood flows through bloo
June 2024, Biology Paper 7 Higher, Q11(a) (2 marks): The arrows show direction of movement inside the vessels. Give two reasons why Fig. 11.2 shows phloem vessels. 1 2 [2]
June 2024, Biology Paper 7 Higher, Q11(b) (2 marks): Compare the type of substances transported in xylem and phloem vessels. [2]
June 2024, Biology Paper 7 Higher, Q11(c) (2 marks): Explain how the transport of substances through xylem changes on a warm day compared with a cold day. [2]
June 2024, Biology Paper 7 Higher, Q13(a) (3 marks): Calculate the surface area to volume ratio of agar cube C. Write your answer in the table. [3]
June 2024, Biology Paper 7 Higher, Q16(a) (2 marks): The diagram shows drawings of red blood cells. Explain two ways red blood cells are adapted to their function. 1 2 [2]
June 2024, Biology Paper 7 Higher, Q16(b)(i) (1 mark): Describe the function of the structure labelled Z. [1]
June 2024, Biology Paper 7 Higher, Q16(b)(ii) (3 marks): Explain why the structure of the frog heart makes it less efficient than a human heart. [3]
June 2023, Biology Paper 1 Foundation, Q5 (1 mark): A student uses a cube to model the size of an organism. 3 cm not to scale Which row shows the correct calculation of the surface area to volume ratio? Surface a
June 2023, Biology Paper 1 Foundation, Q6 (1 mark): Which sentence describes one correct adaptation of phloem? A They are made of dead cells. B They contain large amounts of cytoplasm. C They have a thick cell wa
June 2023, Biology Paper 1 Foundation, Q11(a)(ii) (2 marks): Water moves from the root hair cells into the transport cells of the roots. Describe how water travels to the leaves of the plant from the roots. [2]
June 2023, Biology Paper 1 Foundation, Q11(b)(i) (1 mark): Describe the effect of air movement on water uptake. [1]
June 2023, Biology Paper 1 Foundation, Q11(b)(ii) (3 marks): Calculate the rate of water uptake when the fan is switched off. Give your answer to 1 significant figure. Rate of water uptake = cm3 / min [3]
June 2023, Biology Paper 1 Foundation, Q11(b)(iii) (1 mark): Suggest one way the student could now investigate the effect of light intensity on water uptake. [1]
June 2023, Biology Paper 1 Foundation, Q14(a)(i) (1 mark): Identify the blood vessel labelled P in Fig. 14.1. Put a ring around the correct answer. aorta pulmonary artery pulmonary vein vena cava [1]
June 2023, Biology Paper 1 Foundation, Q14(a)(ii) (6 marks): (ii)* Describe the heart defect shown in Fig. 14.2. Explain how this defect would affect oxygen transportation around the body. Include the names of the chamber
June 2023, Biology Paper 2 Foundation, Q11(a)(i) (2 marks): Complete the table to show which part of the blood is liquid and which helps blood to clot. Put one tick (3) in each row. Part of blood Platelet Plasma Red bloo
June 2023, Biology Paper 2 Foundation, Q11(a)(ii) (2 marks): Describe two differences in the structure of red blood cells and white blood cells. 1 2 [2]
June 2023, Biology Paper 7 Higher, Q8 (1 mark): Which sentence describes one function of translocation? A The transport of mineral ions from the leaf to the meristem. B The transport of mineral ions from the
June 2023, Biology Paper 7 Higher, Q12(a)(i) (2 marks): The function of cell Q in the photograph is the uptake of water. Explain how the structure of cell Q is adapted to this function. [2]
June 2023, Biology Paper 7 Higher, Q12(b)(i) (2 marks): Explain the effect of turning on the electric fan upon the rate of water uptake shown in the table. [2]
June 2023, Biology Paper 7 Higher, Q12(b)(ii) (2 marks): The rate of water uptake when the electric fan is turned off is 0.2 cm3 / min. Use this rate to calculate the level of water after 30 minutes when the fan is sw
June 2023, Biology Paper 7 Higher, Q12(b)(iii) (1 mark): Suggest how the student could develop their investigation to explore the effect of changing the speed of air movement. [1]
June 2023, Biology Paper 7 Higher, Q15(a) (6 marks): Sickle cell disease is a blood disorder causing some red blood cells to become sickle shaped. The diagram shows red blood cells from a person with sickle cell d
June 2023, Biology Paper 7 Higher, Q15(c) (2 marks): Explain how the structure of a vein is adapted to its function. [2]
June 2023, Biology Paper 8 Higher, Q12(a) (3 marks): The diagram shows the four main components of the blood. D A B C Draw lines to connect each letter to the component that they are labelling. Then draw lines fro
June 2022, Biology Paper 1 Foundation, Q15(a)(i) (1 mark): Identify the type of cell shown in Fig. 15.1. [1]
June 2022, Biology Paper 1 Foundation, Q15(a)(ii) (3 marks): The transport system in animals is the circulatory system. Describe the relationship between the circulatory system and the gas exchange system in the human bod
June 2022, Biology Paper 1 Foundation, Q15(b) (2 marks): Phloem is part of the transport system in plants. Fig. 15.2 is a diagram of phloem sieve tubes. Fig. 15.2 Sieve plates Explain how phloem sieve tubes are adapte
June 2022, Biology Paper 1 Foundation, Q15(c)(i) (1 mark): Name the apparatus shown in Fig. 15.3. [1]
June 2022, Biology Paper 1 Foundation, Q15(c)(ii) (1 mark): The air-tight seal stops air getting into the water-filled tube. Suggest why it is important to stop air getting into the tube. [1]
June 2022, Biology Paper 1 Foundation, Q15(c)(iii) (3 marks): The apparatus is set up and left for 10 minutes. The water level moved 8 mm. Calculate the rate of water uptake in mm per second. Give your answer to 2 signific
June 2022, Biology Paper 1 Foundation, Q15(c)(iv) (1 mark): The investigation is repeated with an electric fan switched on next to the apparatus. Predict what would happen to the rate of water uptake by putting a ring ar
June 2022, Biology Paper 7 Higher, Q9 (1 mark): The table shows some information about four organisms. Surface area Volume (m2) (m3) 6 × 10–12 1 × 10–18 A 6 × 10–8 1 × 10–12 B 6 × 100 1 × 100 C 6 × 104 1 × 10
June 2022, Biology Paper 7 Higher, Q11(a)(i) (1 mark): Identify the type of cell shown in Fig. 11.1. [1]
June 2022, Biology Paper 7 Higher, Q11(a)(ii) (3 marks): The transport system in animals is the circulatory system. Describe the relationship between the circulatory system and the gas exchange system in the human bod
June 2022, Biology Paper 7 Higher, Q11(b) (2 marks): Phloem is part of the transport system in plants. Fig. 11.2 is a diagram of phloem sieve tubes. Fig. 11.2 Sieve plates Explain how phloem sieve tubes are adapte
June 2022, Biology Paper 7 Higher, Q11(c)(i) (1 mark): Name the apparatus shown in Fig. 11.3. [1]
June 2022, Biology Paper 7 Higher, Q11(c)(ii) (1 mark): The air-tight seal stops air getting into the water-filled tube. Suggest why it is important to stop air getting into the tube. [1]
June 2022, Biology Paper 7 Higher, Q11(c)(iii) (3 marks): The apparatus is set up and left for 10 minutes. The water level moved 8 mm. Calculate the rate of water uptake in mm per second. Give your answer to 2 signific
June 2022, Biology Paper 7 Higher, Q11(c)(iv) (1 mark): The investigation is repeated with an electric fan switched on next to the apparatus. Predict what would happen to the rate of water uptake by putting a ring ar
June 2022, Biology Paper 8 Higher, Q6 (1 mark): Which substance in the blood plasma is changed by platelets during blood clotting? A Fat B Glucose C Glycogen D Protein Your answer [1]
November 2021, Biology Paper 1 Foundation, Q10 (1 mark): Which row describes the correct direction of blood flow through the left side of the heart? A pulmonary artery atrium ventricle vena cava B pulmonary artery ven
November 2021, Biology Paper 1 Foundation, Q13(a) (1 mark): Which structures inside the heart stop the blood flowing the wrong way? [1]
November 2021, Biology Paper 1 Foundation, Q13(b)(i) (1 mark): Which animal has the highest heart rate? [1]
November 2021, Biology Paper 1 Foundation, Q13(b)(ii) (1 mark): Describe the relationship between life expectancy and heart rate seen in the graph. [1]
November 2021, Biology Paper 1 Foundation, Q13(b)(iii) (1 mark): Humans do not fit the pattern. How does the graph show this? [1]
November 2021, Biology Paper 1 Foundation, Q14(a)(i) (1 mark): What is the name of the apparatus shown in the diagram? Put a ring around the correct answer. gas syringe funnel potometer water bath [1]
November 2021, Biology Paper 1 Foundation, Q14(a)(ii) (2 marks): Describe how the student would use the air bubble to measure water uptake. [2]
November 2021, Biology Paper 1 Foundation, Q14(a)(iii) (2 marks): Write down two environmental factors that increase the rate of water uptake by plants. 1 2 [2]
November 2021, Biology Paper 1 Foundation, Q14(b) (1 mark): When they set up the apparatus, the student cut the shoot under water. Suggest why. [1]
November 2021, Biology Paper 1 Foundation, Q14(c)(i) (4 marks): Most of the water taken in by the plant is lost in transpiration. Complete the table to compare the processes of transpiration and translocation. Transpiration
November 2021, Biology Paper 1 Foundation, Q14(c)(ii) (1 mark): Water is transported in xylem vessels. Write down one way xylem vessels are adapted to this function. [1]
November 2021, Biology Paper 2 Foundation, Q11(d)(ii) (3 marks): Plants are an important part of ecosystems. Which day would plants be most likely to take up water from the soil at the fastest rate? Tick (✓) one box. Saturday
November 2021, Biology Paper 2 Foundation, Q14(b)(i) (2 marks): Some blood cell disorders can affect the function of white blood cells or red blood cells. Suggest two effects on the body if either white blood cells or red bl
November 2021, Biology Paper 7 Higher, Q2 (1 mark): Which row describes the correct direction of blood flow through the left side of the heart? A pulmonary artery atrium ventricle vena cava B pulmonary artery ven
November 2021, Biology Paper 7 Higher, Q13(a) (2 marks): The student measures the distance the air bubble moves in 5 minutes. They then cover the cut shoot with a black plastic bag. The student then measures the dista
November 2021, Biology Paper 7 Higher, Q13(b) (3 marks): Most of the water taken in by the plant is lost through transpiration. Describe the process of water uptake and transpiration. [3]
November 2021, Biology Paper 7 Higher, Q13(c) (2 marks): Translocation occurs in phloem vessels. Explain two ways phloem vessels are adapted to their function. 1 2 [2]
November 2021, Biology Paper 7 Higher, Q14(a) (2 marks): The diagrams show a healthy heart valve and a damaged heart valve. Open Closed Healthy heart valve Damaged heart valve A patient with a damaged heart valve may
November 2020, Biology Paper 1 Foundation, Q7 (1 mark): Which substances are transported in the xylem vessels? 7 A Mineral ions only B Sucrose only C Water and mineral ions D% Water and sucrose [1] Your answer
November 2020, Biology Paper 1 Foundation, Q8 (1 mark): Which chamber of the heart receives blood directly from the pulmonary vein? 8 A Left atrium B Left ventricle C Right atrium D Right ventricle [1] Your answer
November 2020, Biology Paper 1 Foundation, Q12(a) (2 marks): Write down two variables that were controlled in the investigation. 2 12]
November 2020, Biology Paper 1 Foundation, Q12(b) (1 mark): What should the student do to reduce the effect of random errors? ...[1]
November 2020, Biology Paper 1 Foundation, Q12(c)(i) (1 mark): Which set of results are more precise, light or dark? Explain your answer. [1]
November 2020, Biology Paper 1 Foundation, Q12(c)(ii) (3 marks): Calculate the mean change in mass for the plants in the light (plants A to C). Give your answer to 1 decimal place. Mean change in mass for light = 9 |3]
November 2020, Biology Paper 7 Higher, Q2 (1 mark): A student investigates the rate of diffusion using blocks of agar. The diagram shows one of the blocks of agar they use. 2 cm 2 cm 4 cm The block has a surface
November 2020, Biology Paper 7 Higher, Q4 (1 mark): The diagram shows cells from a plant. What is the function of these cells? A Produce sucrose B Take in water from the soil C Transport sucrose to the roots D Tr
November 2020, Biology Paper 7 Higher, Q13(a)(i) (2 marks): Explain one way red blood cells are adapted to transport oxygen around the body. [2]
November 2020, Biology Paper 7 Higher, Q13(a)(ii) (1 mark): Which gas diffuses out of blood and into the lungs? [1]
November 2020, Biology Paper 7 Higher, Q13(b)(i) (2 marks): Complete these sentences about the human heart. The wall of the human heart is made of a type of muscle called muscle. The muscle wall of the ventricle to pump
November 2020, Biology Paper 7 Higher, Q13(b)(ii) (2 marks): Fig. 13.2 shows two different blood vessels, X and Y, that are connected to the heart. X Y Fig. 13.2 Which blood vessel, X or Y, is most likely to be the vena c
November 2020, Biology Paper 7 Higher, Q14(a)(i) (1 mark): Why was each pot covered with a clear plastic bag? [1]
November 2020, Biology Paper 7 Higher, Q14(a)(ii) (1 mark): What would be the effect on the results if the pots were not covered? [1]
November 2020, Biology Paper 7 Higher, Q14(b) (1 mark): The student has not tried to reduce the effects of random error. Suggest how they should have done this. [1]
November 2020, Biology Paper 7 Higher, Q14(c)(i) (2 marks): Write down the independent variable and dependent variable for this investigation. Independent variable Dependent variable [2]
November 2020, Biology Paper 7 Higher, Q14(c)(ii) (3 marks): Plant C has 2 leaves. It had a starting mass of 138 g. After 24 hours the mass of plant C was 131 g. Calculate the percentage decrease in mass for plant C. Give
November 2020, Biology Paper 7 Higher, Q14(c)(iii) (6 marks): A student investigates transpiration rate in three plants. The plants are the same size, age and type. The student removes leaves from two of the plants so that
June 2019, Biology Paper 1 Foundation, Q3 (1 mark): Look at the apparatus in the diagram. What is this apparatus used to measure? A Rate of blood flow B Rate of diffusion C Rate of food uptake D Rate of water upt
June 2019, Biology Paper 1 Foundation, Q10 (1 mark): Which row shows the correct pathway of oxygen from the lungs to the body tissues? A artery atrium ventricle vein B atrium artery vein ventricle C vein atrium ve
June 2019, Biology Paper 1 Foundation, Q11(a) (2 marks): The diagram shows four cubes. A B C D The table shows some data about the cubes. Height of Surface area Surface area Volume Cube cube to volume (cm2) (cm3) (cm)
June 2019, Biology Paper 1 Foundation, Q11(b) (1 mark): Complete the sentences about the data in the table. Use the words in the list. You may use the words once, more than once or not at all. decreases increases sta
June 2019, Biology Paper 1 Foundation, Q11(c) (3 marks): Look at the picture. It shows a salamander larva with external gills. External gills The salamander larva has skin that is a gas exchange surface. The external
June 2019, Biology Paper 1 Foundation, Q12(a)(i) (1 mark): Percentage blood flow to the muscle changes during exercise. Calculate this change in percentage blood flow. Change in percentage blood flow = % [1]
June 2019, Biology Paper 1 Foundation, Q12(a)(ii) (2 marks): Use ideas about aerobic respiration to explain the change in blood flow to muscle during exercise. [2]
June 2019, Biology Paper 1 Foundation, Q12(b)(i) (2 marks): Give two differences between the wall structure of arteries and capillaries. 1 2 [2]
June 2019, Biology Paper 1 Foundation, Q12(b)(ii) (1 mark): Write down one reason why there is a difference in wall structure between arteries and capillaries. [1]
June 2019, Biology Paper 1 Foundation, Q15(a)(i) (1 mark): Which transport vessels have been removed along with the ring of bark? [1]
June 2019, Biology Paper 1 Foundation, Q15(a)(ii) (1 mark): Which transport vessels remain in the wood? [1]
June 2019, Biology Paper 1 Foundation, Q15(b)(i) (1 mark): Write down one substance that is translocated. [1]
June 2019, Biology Paper 1 Foundation, Q15(b)(ii) (1 mark): What conclusion can be made about the direction of movement in the vessels that have been removed in the ring of bark? Explain your answer using evidence from t
June 2019, Biology Paper 7 Higher, Q2 (1 mark): Which row shows the correct pathway of oxygen from the lungs to the body tissues? A artery atrium ventricle vein B atrium artery vein ventricle C vein atrium ve
June 2019, Biology Paper 7 Higher, Q4 (1 mark): The photograph shows the structure of specialised plant tissue. © Peter v. Sengbusch, www1.biologie.uni- hamburg.de. Item removed due to third party copyright r
June 2019, Biology Paper 7 Higher, Q9 (1 mark): Which statement describes how water is lost from the leaf? A Diffusion of water from cells followed by diffusion through the stomata. B Diffusion of water from
June 2019, Biology Paper 7 Higher, Q12(a) (3 marks): The diagram in Fig. 12.1 shows four cubes. A B C D Fig. 12.1 The table shows some data about the cubes in Fig. 12.1. Height of Surface area Volume Surface area
June 2019, Biology Paper 7 Higher, Q12(b)(i) (2 marks): The root hair cell is adapted for its function. Explain why the adaptation is needed. [2]
June 2018, Biology Paper 1 Foundation, Q4 (1 mark): Which substances are transported in the phloem vessels? A Sucrose only B Water and mineral ions C Water and sucrose D Water only [1] Your answer
June 2018, Biology Paper 1 Foundation, Q5 (1 mark): The diagram shows a potometer. X Air bubble Why is structure X needed? A Maintains temperature of the apparatus B Provides the plant with mineral ions C Returns
June 2018, Biology Paper 1 Foundation, Q6 (1 mark): Look at the diagram of a potometer. How can the apparatus be changed to increase the rate of water uptake? A Add more water to the beaker B Place an electric fa
June 2018, Biology Paper 1 Foundation, Q11(c)(i) (1 mark): A plant is growing in a soil of pH 4. Which mineral ion will be most available to the plant? [1]
June 2018, Biology Paper 1 Foundation, Q11(c)(ii) (2 marks): Magnesium is required by plants for photosynthesis. Growing plants in very alkaline soils may result in less biomass. Use the chart to explain why. [2]
June 2018, Biology Paper 1 Foundation, Q11(c)(iii) (2 marks): The picture shows a root growing from a seed. Seed Root Explain how the structures seen on the root help with the uptake of minerals. [2]
June 2018, Biology Paper 1 Foundation, Q16(a)(i) (2 marks): Compare blood vessels X and Z and describe the differences that can be seen in the picture. [2]
June 2018, Biology Paper 1 Foundation, Q16(a)(ii) (2 marks): Blood vessel Y is a capillary. Explain how the structure of a capillary is adapted to its function. [2]
June 2018, Biology Paper 1 Foundation, Q16(b)(i) (1 mark): Write down one other way the structure of the lungfish circulatory system is different to that of humans. [1]
June 2018, Biology Paper 1 Foundation, Q16(b)(ii) (2 marks): When lungfish and humans are on land, the human circulatory system is more efficient than that of lungfish. Suggest why the human circulatory system is more eff
June 2018, Biology Paper 7 Higher, Q3 (1 mark): The picture shows cells from the centre of a root, seen using a light microscope. X Which type of transport cell is labelled X? A Phloem B Root hair C Stomata D
June 2018, Biology Paper 7 Higher, Q6 (1 mark): An elephant has a volume of 4.80 m3. The surface area to volume ratio of the elephant is 3.84. Calculate the surface area of this elephant. A 0.80 m2 B 1.25 m2
June 2018, Biology Paper 7 Higher, Q8 (1 mark): Translocation is a process that occurs in plants. Transport tissue Substances Direction of Involves active transported movement transport A Phloem Sucrose Two w
June 2018, Biology Paper 7 Higher, Q11(a)(i) (2 marks): Compare blood vessels X and Z and describe the differences that can be seen in the picture. [2]
June 2018, Biology Paper 7 Higher, Q11(a)(ii) (2 marks): Blood vessel Y is a capillary. Explain how the structure of a capillary is adapted to its function. [2]
June 2018, Biology Paper 7 Higher, Q11(b)(i) (1 mark): Write down one other way the structure of the lungfish circulatory system is different to that of humans. [1]
June 2018, Biology Paper 7 Higher, Q11(b)(ii) (2 marks): When lungfish and humans are on land, the human circulatory system is more efficient than that of lungfish. Suggest why the human circulatory system is more eff
June 2018, Biology Paper 8 Higher, Q12(a)(i) (1 mark): The coronary artery supplies the cardiac muscle with oxygen. Label the diagram to show the position of one of the coronary arteries. [1]

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