plumiWhy animals need a heart and circulation: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 1.2.1 Why animals need a heart and circulation, 2019–2025, with mark schemes and examiner’s reports where available.
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Q4(c)
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All 11 questions on Why animals need a heart and circulation, as a list
- June 2025, AS Unit 1, Q4(c) (6 marks): The diagram shows the distribution of blood flowing through the circulatory system of a frog. The percentages of blood flowing through the parts of the circulat
- October 2024, Unit 5, Q8(e) (3 marks): Explain why a ‘falling blood pressure’ might result in poor brain health (Paragraph 20). (3)
- June 2024, AS Unit 1, Q4(c)(ii) (3 marks): Explain why it is important for body cells to be close to capillaries to meet the demands of respiration. Use the information in the question and the table to s
- October 2023, AS Unit 1, Q5(a)(i) (1 mark): State what is meant by the term mass transport. (1)
- October 2023, AS Unit 1, Q5(a)(ii) (2 marks): All the cells in an animal require glucose. Explain the limitations of diffusion in providing cells with glucose. (2)
- January 2023, AS Unit 1, Q7(b) (3 marks): Explain why large lungs and a large heart would help a yak to survive at high altitudes. (3)
- October 2021, AS Unit 1, Q4(b)(ii) (2 marks): Explain why the circulation of a butterfly is different from the circulation of a mammal. (2)
- January 2021, AS Unit 1, Q2(a) (2 marks): Five litres of blood can pass through a human heart each minute. Calculate the volume of blood that passes through this heart in 24 hours. Give your answer in s
- October 2020, Unit 5, Q8(f) (3 marks): Researchers have used stem cells to produce spinal cord tissue from individuals with amyotrophic lateral sclerosis. These functioning tissues contain motor neur
- June 2019, AS Unit 1, Q7(a) (1 mark): Estimate the length of the neck of this giraffe from the shoulders, using the information in the photograph. (1) Answer m
- June 2019, AS Unit 1, Q7(b) (2 marks): The heart of an adult giraffe can be 60 cm long. Explain why the heart of a giraffe needs to be so large. (2)
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