DNA and gene expression — Biology IAL Past Papers

93 papers, 2014–2025 · Unit 1, Unit 2, Unit 5, Unit 6, Unit 3, Unit 4

Every Biology IAL past paper in the collection that assesses dna and gene expression.

By unit: all units (93) · Unit 1 (32) · Unit 2 (23) · Unit 3 (1) · Unit 4 (10) · Unit 5 (24) · Unit 6 (3)

Unit 1: on 32 of 32 papers, 1–26 marks a paper (11 on average)
Unit 2: on 23 of 31 papers, 3–11 marks a paper (6 on average)
Unit 3: on 1 of 32 papers, 1 mark a paper
Unit 4: on 10 of 29 papers, 2–9 marks a paper (7 on average)
Unit 5: on 24 of 28 papers, 2–9 marks a paper (4 on average)
Unit 6: on 3 of 29 papers, 2–3 marks a paper (2 on average)

Read question by question: blind checks found 117 of 120 question parts tagged with the right topic (95% confidence interval 92.9–99.1%).

How topics are found and checked

Papers

Unit 1 · June 2025 · Q5 (a, b, c(ii)) · 11 marks — question paper and mark scheme
Unit 2 · June 2025 · Q3 (b(ii)) · 2 marks, Q6 (a(i), b) · 6 marks — question paper and mark scheme
Unit 5 · June 2025 · Q7 (a(ii)) · 3 marks, Q8 (f) · 2 marks — question paper and mark scheme
Unit 1 · January 2025 · Q5 (a, b, c) · 10 marks, Q6 (c(ii), c(iii)) · 4 marks, Q8 (a) · 4 marks — question paper and mark scheme
Unit 2 · January 2025 · Q7 (a, c(i), c(ii)) · 11 marks — question paper and mark scheme
Unit 1 · October 2024 · Q5 (b(i)) · 2 marks, Q7 (a(i), a(ii), a(iii), b(i), b(ii), b(iii)) · 14 marks — question paper and mark scheme
Unit 2 · October 2024 · Q6 (d(i), d(ii)) · 4 marks — question paper and mark scheme
Unit 5 · October 2024 · Q2 (b(ii)) · 3 marks — question paper and mark scheme
Unit 6 · October 2024 · Q1 (c) · 3 marks — question paper and mark scheme
Unit 1 · June 2024 · Q2 (a(i), a(ii), b, c) · 5 marks, Q3 (a, b, c) · 7 marks — question paper and mark scheme
Unit 2 · June 2024 · Q5 (b, c) · 9 marks — question paper and mark scheme
Unit 5 · June 2024 · Q8 (f) · 3 marks — question paper and mark scheme
Unit 1 · January 2024 · Q2 (a, b, c) · 6 marks, Q6 (c(ii)) · 3 marks — question paper and mark scheme
Unit 5 · January 2024 · Q8 (b, c) · 7 marks — question paper and mark scheme
Unit 1 · October 2023 · Q1 (a, b) · 8 marks, Q3 (a, b(i), b(ii)) · 7 marks — question paper and mark scheme
Unit 2 · October 2023 · Q7 (b) · 5 marks — question paper and mark scheme
Unit 5 · October 2023 · Q1 (b) · 3 marks, Q8 (e) · 4 marks — question paper and mark scheme
Unit 1 · June 2023 · Q1 (a(i), a(ii), a(iii), b) · 6 marks, Q5 (c(i)) · 1 mark — question paper and mark scheme
Unit 2 · June 2023 · Q2 (c) · 3 marks, Q4 (c) · 5 marks — question paper and mark scheme
Unit 5 · June 2023 · Q7 (b) · 4 marks — question paper and mark scheme
Unit 1 · January 2023 · Q8 (c(i), c(ii)) · 9 marks — question paper and mark scheme
Unit 2 · January 2023 · Q8 (b, c(i)) · 7 marks — question paper and mark scheme
Unit 5 · January 2023 · Q4 (c) · 4 marks, Q8 (d) · 3 marks — question paper and mark scheme
Unit 1 · October 2022 · Q8 (a, b(i), b(ii), c(i), c(ii), c(iii)) · 13 marks — question paper and mark scheme
Unit 2 · October 2022 · Q6 (b) · 5 marks, Q8 (b) · 4 marks — question paper and mark scheme
Unit 5 · October 2022 · Q6 (c) · 4 marks — question paper and mark scheme
Unit 1 · June 2022 · Q8 (b(i), b(iii)) · 5 marks — question paper and mark scheme
Unit 2 · June 2022 · Q7 (b) · 4 marks — question paper and mark scheme
Unit 5 · June 2022 · Q4 (b(i)) · 4 marks — question paper and mark scheme
Unit 1 · January 2022 · Q3 (a, b, c(i), c(ii)) · 10 marks, Q4 (a) · 1 mark, Q8 (a(i), a(ii)) · 2 marks — question paper and mark scheme
Unit 2 · January 2022 · Q3 (b) · 4 marks — question paper and mark scheme
Unit 5 · January 2022 · Q8 (d) · 3 marks — question paper and mark scheme
Unit 1 · October 2021 · Q1 (a, b) · 2 marks, Q6 (b(i), b(ii), b(iii)) · 8 marks, Q8 (a(i)) · 3 marks — question paper and mark scheme
Unit 2 · October 2021 · Q7 (b) · 5 marks, Q8 (b(ii)) · 4 marks — question paper and mark scheme
Unit 3 · October 2021 · Q1 (b(ii)) · 1 mark — question paper and mark scheme
Unit 5 · October 2021 · Q6 (c, d) · 6 marks — question paper and mark scheme
Unit 1 · June 2021 · Q1 (a) · 4 marks, Q4 (b(i)) · 2 marks, Q7 (a) · 1 mark — question paper and mark scheme
Unit 5 · June 2021 · Q8 (g) · 2 marks — question paper and mark scheme
Unit 1 · January 2021 · Q1 (a(i), a(ii), a(iii), b(i), b(ii)) · 7 marks — question paper and mark scheme
Unit 2 · January 2021 · Q6 (b) · 4 marks — question paper and mark scheme
Unit 5 · January 2021 · Q7 (b(i)) · 2 marks — question paper and mark scheme
Unit 1 · October 2020 · Q1 (a) · 5 marks, Q4 (a(i), a(ii), a(iii), b(i), b(ii)) · 9 marks, Q6 (a, b(i), b(ii)) · 12 marks — question paper and mark scheme
Unit 2 · October 2020 · Q7 (c, d) · 8 marks — question paper and mark scheme
Unit 5 · October 2020 · Q8 (g) · 3 marks — question paper and mark scheme
Unit 4 · October 2020 · Q1 (a, b(ii), c(i), c(ii), c(iii), c(iv), c(v)) · 9 marks — question paper and mark scheme
Unit 1 · January 2020 · Q1 · 6 marks — question paper and mark scheme
Unit 2 · January 2020 · Q7 (c) · 5 marks — question paper and mark scheme
Unit 1 · October 2019 · Q6 (a, b(i), b(ii)) · 9 marks, Q8 (c(ii)) · 6 marks — question paper and mark scheme
Unit 2 · October 2019 · Q8 (c(i), c(ii)) · 5 marks — question paper and mark scheme
Unit 1 · June 2019 · Q3 (a(i), a(ii), b, c(i), c(ii), d) · 10 marks, Q4 (a(i), a(ii), a(iii), b) · 8 marks, Q8 (b(iii)) · 3 marks — question paper and mark scheme
Unit 2 · June 2019 · Q7 (d) · 3 marks — question paper and mark scheme
Unit 1 · June 2019 · Q4 (a, b(i), b(ii), c) · 9 marks, Q8 (a) · 2 marks — question paper and mark scheme
Unit 1 · January 2019 · Q3 (a, b(i), b(ii), c) · 10 marks — question paper and mark scheme
Unit 1 · January 2019 · Q1 (a(iii), a(iv), b) · 4 marks — question paper and mark scheme
Unit 4 · January 2019 · Q5 (a(i), a(ii), a(iii)) · 7 marks — question paper and mark scheme
Unit 5 · January 2019 · Q7 (f) · 2 marks — question paper and mark scheme
Unit 1 · October 2018 · Q3 (a(i)) · 2 marks, Q4 (a, b(i), b(ii), c) · 9 marks — question paper and mark scheme
Unit 2 · October 2018 · Q7 (b) · 6 marks — question paper and mark scheme
Unit 4 · October 2018 · Q3 (c(i), c(ii)) · 3 marks — question paper and mark scheme
Unit 5 · October 2018 · Q6 (a(i), a(ii)) · 6 marks, Q7 (g) · 3 marks — question paper and mark scheme
Unit 1 · June 2018 · Q2 (a, b, c, d) · 10 marks, Q6 (a, b) · 6 marks — question paper and mark scheme
Unit 4 · June 2018 · Q6 (a(i), a(ii)) · 9 marks — question paper and mark scheme
Unit 5 · June 2018 · Q7 (e) · 3 marks — question paper and mark scheme
Unit 1 · January 2018 · Q6 (a(i), a(ii), a(iii)) · 4 marks — question paper and mark scheme
Unit 2 · January 2018 · Q8 (b) · 4 marks — question paper and mark scheme
Unit 4 · January 2018 · Q3 (a, b(ii), b(iii), b(iv)) · 9 marks — question paper and mark scheme
Unit 5 · January 2018 · Q1 (b(iii)) · 4 marks — question paper and mark scheme
Unit 1 · October 2017 · Q7 (a(i), c(i), c(ii)) · 8 marks — question paper and mark scheme
Unit 4 · October 2017 · Q6 (a(i), a(ii), c) · 5 marks — question paper and mark scheme
Unit 5 · October 2017 · Q5 (b(iii)) · 4 marks — question paper and mark scheme
Unit 1 · June 2017 · Q1 (a(i), a(ii), a(iii), b, c(i), c(ii)) · 7 marks, Q7 (b(i), b(ii)) · 9 marks — question paper and mark scheme
Unit 2 · June 2017 · Q4 (c) · 3 marks — question paper and mark scheme
Unit 4 · June 2017 · Q5 (a) · 6 marks — question paper and mark scheme
Unit 5 · June 2017 · Q4 (b(ii)) · 2 marks — question paper and mark scheme
Unit 1 · January 2017 · Q8 (c(i)) · 1 mark — question paper and mark scheme
Unit 5 · January 2017 · Q7 (f) · 3 marks — question paper and mark scheme
Unit 1 · October 2016 · Q6 (a, b(ii)) · 4 marks, Q8 (a(i), a(ii), b, c) · 10 marks — question paper and mark scheme
Unit 2 · October 2016 · Q6 (a(ii), a(iii)) · 3 marks — question paper and mark scheme
Unit 1 · January 2016 · Q5 (a(ii), b) · 7 marks — question paper and mark scheme
Unit 2 · January 2016 · Q6 (d) · 4 marks — question paper and mark scheme
Unit 5 · January 2016 · Q7 (e) · 3 marks — question paper and mark scheme
Unit 6 · June 2015 · Q1 (d) · 2 marks — question paper and mark scheme
Unit 1 · January 2015 · Q1 (a(i), a(ii), a(iii), a(iv), a(v), b(i), b(ii)) · 9 marks, Q4 (b, c) · 8 marks — question paper and mark scheme
Unit 4 · January 2015 · Q2 (c) · 2 marks — question paper and mark scheme
Unit 5 · January 2015 · Q7 (c) · 4 marks — question paper and mark scheme
Unit 1 · June 2014 · Q1 (a(i), a(ii), a(iii), a(iv), a(v), b) · 10 marks — question paper and mark scheme
Unit 2 · June 2014 · Q6 (d) · 4 marks — question paper and mark scheme
Unit 4 · June 2014 · Q6 (b(ii), b(iii)) · 7 marks — question paper and mark scheme
Unit 1 · January 2014 · Q1 (a(ii), a(iii), a(iv)) · 3 marks, Q6 (b) · 4 marks — question paper and mark scheme
Unit 2 · January 2014 · Q3 (b) · 4 marks — question paper and mark scheme
Unit 4 · January 2014 · Q8 (a, b) · 9 marks — question paper and mark scheme
Unit 6 · January 2014 · Q1 (b) · 2 marks — question paper and mark scheme
Unit 5 · January 2014 · Q2 (a(i)) · 2 marks — question paper and mark scheme

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