plumiWater: OCR A‑Level Biology A questions
OCR A-Level Biology A past-paper questions on 2.1.2.1 Water, 2016–2025, with mark schemes and examiner’s reports where available.
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All 9 questions on Water, as a list
- June 2025, Paper 2, Q1 (1 mark): Hydrogen bonds are important for the physical and chemical properties of water. How do hydrogen bonds form in water? Electronegative (δ–) oxygen atoms are attra
- June 2025, Paper 2, Q2 (1 mark): Water has many properties that are important for living organisms. Which property of water molecules explains why small animals, such as pond skaters, are able
- June 2022, Paper 1, Q17 (6 marks): 17* The thermal properties of water allow organisms to live in an environment with relatively small changes in temperature. These properties also make water eff
- June 2022, AS Paper 1, Q25(a)(i) (3 marks): Draw two water molecules and label the bond between the two molecules. [3]
- June 2022, AS Paper 1, Q25(a)(ii) (3 marks): Explain how the properties of water are related to the transport role of water in a stem. [3]
- June 2019, Paper 2, Q16(d) (3 marks): Water has many properties that are essential for living organisms. Explain how properties relating to the density of water contribute to the survival of organis
- June 2018, AS Paper 1, Q21(b) (2 marks): Outline the properties of water which make it an ideal habitat for an amphibian. [2]
- June 2017, Paper 1, Q18(c)(i) (2 marks): Soluble mineral ions are present in soil. –) ions. Explain why water molecules can form hydrogen bonds with nitrate (NO3 [2]
- June 2017, AS Paper 1, Q7 (1 mark): Water is known as the universal solvent as it has the ability to dissolve many ionic and covalent compounds due to its polar nature. Which of the 3-carbon compo
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