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Spec 3400

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WJEC GCSE Biology past papers by year and exam series, with mark schemes and worked solutions where available. Write your working straight onto the paper and Genie marks it question by question against the mark scheme.

June 2025 Papers

Unit 3400U10-1

Unit 3400U20-1

Unit 3400UA0-1

Unit 3400UB0-1

June 2024 Papers

Unit 1 · Cells, Organ Systems and Ecosystems 3400U10-1 · F

Question paper Mark scheme

Unit 1 · Cells, Organ Systems and Ecosystems 3400U20-1 · H

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400UA0-1 · F

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400UB0-1 · H

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Unit 3 · Practical Assessment 3400U30

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June 2023 Papers

Unit 1 · Cells, Organ Systems and Ecosystems 3400U10-1 · F

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Unit 1 · Cells, Organ Systems and Ecosystems 3400UA0-1 · H

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400U20-1 · F

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400UB0-1 · H

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June 2022 Papers

Unit 1 · Cells, Organ Systems and Ecosystems 3400U10-1 · F

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Unit 1 · Cells, Organ Systems and Ecosystems 3400UA0-1 · H

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400U20-1 · F

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400U40-1 Contingency · F

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400UB0-1 · H

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400UD0-1 Contingency · H

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June 2019 Papers

Unit 1 · Cells, Organ Systems and Ecosystems 3400U10-1 · F

Question paper Mark scheme

Unit 1 · Cells, Organ Systems and Ecosystems 3400UA0-1 · H

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400U20-1 · F

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Unit 2 · Variation, Homeostasis and Micro-organisms 3400UB0-1 · H

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June 2018 Papers

Unit 1 · Cells, Organ Systems and Ecosystems 3400U10-1 · F

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Unit 1 · Cells, Organ Systems and Ecosystems 3400UA0-1 · H

Question paper Mark scheme

Unit 2 · Variation, Homeostasis and Micro-organisms 3400U20-1 · F

Question paper Mark scheme

Unit 2 · Variation, Homeostasis and Micro-organisms 3400UB0-1 · H

Question paper Mark scheme

June 2017 Papers

Unit 1 · Cells, Organ Systems and Ecosystems 3400U10-1 · F

Question paper Mark scheme

Unit 1 · Cells, Organ Systems and Ecosystems 3400UA0-1 · H

Question paper Mark scheme