| Chapter 1 Introduction to biology | | |
| Chapter 1 Introduction to biology (2021 new questions) | | |
| Chapter 2 Molecules of life | | |
| Chapter 2 Molecules of life (2021 new questions) | | |
| Chapter 3 Cellular organization | | |
| Chapter 3 Cellular organization (2021 new questions) | | |
| Chapter 4 Movement of substances across the cell membrane | | |
| Chapter 4 Movement of substances across the cell membrane (2021 new questions) | | |
| Chapter 5 Metabolism and enzymes | | |
| Chapter 5 Metabolism and enzymes (2021 new questions) | | |
| Integrated Quiz 1 (Book 1A: Chapters 1–5) | | |