"Explain" questions — OCR A-Level Biology B — Advancing Biology (H422)
94 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
- A fish obtains oxygen from water by passing water over its gills. Explain how the gills of a fish are adapted to allow e…
- A marine ecosystem contains phytoplankton (producers), krill (primary consumers), fish (secondary consumers) and seals (…
- A scientist is studying how plants transport substances around their bodies. Explain how the structure of phloem tissue …
- A species of Arctic fox lives in a tundra ecosystem. The foxes have white fur and feed on lemmings. Over many generation…
- A farmer wants to improve the fertility of their soil by making compost from dead plant material. Explain why the rate o…
- Scientists have used genetic engineering to produce insulin in bacteria. Explain how a human insulin gene is inserted in…
- A couple have been trying to conceive a child for over two years without success. A doctor diagnoses one partner with in…
- A gardener notices that fruit left on the ground in summer rots much faster than fruit stored in a cold cellar over wint…