plumiProtein transport: rER and Golgi apparatus: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 3.1.3 Protein transport: rER and Golgi apparatus, 2019–2025, with mark schemes and examiner’s reports where available.
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Q1(b)(i)
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All 15 questions on Protein transport: rER and Golgi apparatus, as a list
- June 2025, AS Unit 2, Q1(b)(i) (1 mark): Name organelle A, shown in the photograph. (1)
- June 2025, AS Unit 2, Q1(b)(ii) (2 marks): Describe the role of this organelle in the formation and transport of extracellular enzymes. (2)
- October 2024, AS Unit 2, Q4(c)(i) (3 marks): Describe the role of the rough endoplasmic reticulum and the Golgi apparatus in the production of these enzymes. (3)
- October 2024, Unit 4, Q3(a) (2 marks): Peptide fragments bind to MHC molecules to form an antigen‑MHC complex. This takes place in the rough endoplasmic reticulum (rER). The complex is then transport
- June 2024, AS Unit 2, Q8(a) (3 marks): Describe the role of the rough endoplasmic reticulum in the formation of extracellular enzymes. (3)
- June 2023, AS Unit 2, Q3(a) (2 marks): Describe the role of the Golgi apparatus in the formation of these extracellular enzymes. (2)
- October 2022, AS Unit 2, Q5(a)(iii) (5 marks): Rhesus antigens are glycoproteins. Describe how a Rhesus antigen would be produced from its polypeptide chain and transported to the cell surface membrane. (5)
- June 2022, AS Unit 2, Q6(b)(i) (2 marks): Describe the role of one organelle involved in the production of this enzyme. (2) Organelle Role
- January 2022, AS Unit 2, Q8(a) (2 marks): Suggest how the sticky proteins would have been secreted. (2)
- October 2021, Unit 5, Q6(a)(ii) (1 mark): Which organelle is involved in chemically modifying cytokine proteins before they are secreted? (1) A Golgi apparatus B ribosome C smooth endoplasmic reticulum
- June 2021, AS Unit 2, Q5(a)(ii) (1 mark): How many of the following are functions of the Golgi apparatus? • formation of extracellular enzymes • modification of proteins • formation of peptide bonds thr
- June 2021, AS Unit 2, Q5(a)(iii) (1 mark): A cell was supplied with radioactive amino acids. The cell took in these amino acids and used them in protein synthesis. Which structure in the cell would becom
- January 2021, Unit 6, Q1(b) (4 marks): The tip of the pollen tube is protected by an outer layer of pectin. Pectin is a polysaccharide. Starch grains, mitochondria and vesicles are present in the tip
- January 2020, AS Unit 2, Q7(b) (5 marks): Describe how the protein insulin is transported from the ribosomes and then secreted by a beta cell. (5)
- June 2019, AS Unit 2, Q4(c) (4 marks): Cells in the pancreas use amino acids to synthesise polypeptides. These cells also secrete enzymes and glycoproteins into the small intestine. Cells from the pa
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