"Explain" questions — IB DP Biology Standard Level (2023 syllabus)
287 questions · biology · View as Markdown
How to answer
WHAT + WHY. Every point paired with a because. Structure: X happens because Y. This causes Z because … Assessment Objective: AO2. Every "explain" answer on this spec is marked against exactly this pattern.
Sample questions
- Explain how the structure of the rough endoplasmic reticulum (rER) is related to its role in the production and processi…
- Explain why DNA replication must occur before mitosis and describe one consequence if replication failed to occur.
- Explain how the primary structure of a protein determines its three-dimensional shape and, therefore, its function.
- Explain how sex-linked inheritance can result in a phenotypic ratio that differs between males and females in the offspr…
- Explain how the structure of a capillary is adapted to allow the exchange of substances between blood and surrounding ti…
- Explain how the adaptations of a named aquatic insect larva allow it to obtain sufficient oxygen in a fast-flowing, well…
- Explain how non-competitive inhibitors reduce the rate of an enzyme-catalysed reaction.
- Explain how variation in beak depth within a population of finches can lead to changes in allele frequency over several …