Pearson Edexcel International A-level (IAL) Biology questions by topic
Pearson Edexcel International A-level (IAL) Biology is modular, with each unit examined in its own paper in the January, June and October series. AceLearningNow has the three International AS units: Unit 1 (Molecules, Diet, Transport and Health), Unit 2 (Cells, Development, Biodiversity and Conservation) and Unit 3, the written practical skills paper. Units 4 to 6 are not on AceLearningNow yet.
Model answers
153 of 352 questions have a model answer. More are added paper by paper.
- 352 questions
- 55 past papers
- 19 exam series, January 2019 to June 2025
- 19 of 55 papers in Paper Analysis
The Free plan includes a daily allowance of questions with their mark schemes. Questions are shown only after you log in.
Topics in this course
Specification headings, with how many ALN questions are matched to each. A question can test more than one heading. So far 153 of 352 questions are matched to topics; the rest can still be practised by paper.
- 1 · Molecules, Transport and Health96 questions
- 2 · Membranes, Proteins, DNA and Gene Expression104 questions
Most-examined topics
From Paper Analysis: the sub-sections that came up in the largest share of the papers we have analysed. These are past counts, not predictions.
- 2 · Membranes, Proteins, DNA and Gene ExpressionUnit 1: Molecules, Diet, Transport and Health · in 19 of 19 analysed Unit 1 papers, about 55 marks when it appears
- 1 · Molecules, Transport and HealthUnit 1: Molecules, Diet, Transport and Health · in 19 of 19 analysed Unit 1 papers, about 51 marks when it appears
The full breakdown by specification point, with the questions behind each count, is in Paper Analysis on the Basic and Premium plans.
Model answers by paper
Counts update automatically as papers and model answers are added. Recent papers appear once the exam board has released them publicly.
| Paper | With model answers | Questions | Past papers | In Paper Analysis |
|---|---|---|---|---|
| Unit 1 | 153 (100%) | 153 | 19 | 19 of 19 |
| Unit 2 | 0 (0%) | 145 | 18 | 0 of 18 |
| Unit 3 | 0 (0%) | 54 | 18 | 0 of 18 |