plumiPhotosynthesis overview and ATP: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 5.1.1 Photosynthesis overview and ATP, 2019–2025, with mark schemes and examiner’s reports where available.
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Q7(a)
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All 12 questions on Photosynthesis overview and ATP, as a list
- October 2024, Unit 4, Q7(a) (4 marks): Explain how infection with these bacteria results in the death of the leaf cells and eventually the whole plant. (4)
- January 2024, Unit 4, Q2(a)(ii) (2 marks): Simple sugars have the formula CnH2nOn. Name the inorganic molecule that provides each element in a simple sugar. (2) C H . O
- October 2023, Unit 4, Q5(b)(ii) (1 mark): Which is a fuel that stores hydrogen in plants and seaweeds? (1) A ATP B glucose C glycogen D RUBISCO
- October 2023, Unit 4, Q5(b)(iii) (1 mark): Which row of the table shows the reactions that combine hydrogen with carbon dioxide and release oxygen into the atmosphere? (1) Hydrogen is combined with Oxyge
- June 2023, Unit 4, Q5(b) (3 marks): These scientists also measured the mass of C. pyrenoidosa, with and without PBF attached, after a 20-day period. They found that the increase in mass of C. pyre
- October 2022, Unit 4, Q3(a) (1 mark): Which row of the table is correct for these two reactions? (1) Light-dependent Light-independent reactions reactions ADP is phosphorylated, ATP is hydrolysed, A
- January 2022, Unit 5, Q1(c) (2 marks): Describe how ATP is used to supply energy for biological processes. (2)
- January 2021, Unit 4, Q5(a)(i) (2 marks): Explain why light energy is converted into energy stored in ATP. (2)
- January 2021, Unit 4, Q5(a)(ii) (2 marks): An equation can summarise the production and breakdown of ATP. Complete this equation, by writing the names of the substrates and the type of reaction on the th
- January 2021, Unit 4, Q5(b)(ii) (2 marks): Simple sugars have the formula CnH2nOn. Name the inorganic molecule from which each element in a simple sugar originated. (2) C H . O
- October 2020, Unit 4, Q3(a)(i) (1 mark): In photolysis, one of the bonds in each water molecule is broken. Using the equation for photosynthesis, calculate how much energy is released by photolysis in
- October 2020, Unit 4, Q3(b)(i) (1 mark): State what other information is needed in the table of bond energies for this value to be calculated. (1)
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