| Select | | View | Download | | Chapter 40 Harmful effects of microorganisms | | |
| Chapter 40 Harmful effects of microorganisms (2021 new questions) | | |
| New question highlights: Micrograph analysis (2020 updated version) | | |
| New question highlights: Graph analysis (2020 updated version) | | |
| New question highlights: Data analysis (2020 updated version) | | |
| New question highlights: Scientific investigation (2020 updated version) | | |
| New question highlights: NOS, STSE (2020 updated version) | | |
| New question highlights: Cross-topic essays (2020 updated version) | | |
| New question highlights: Overseas exam questions (2020 updated version) | | |