"Explain" questions — Edexcel GCSE Biology (1BI0)
128 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 selective breeding could be used to develop a new variety of wheat that produces a higher yield of grain.
- During exercise, the breathing rate of a student increases. Explain how this helps to maintain efficient gas exchange in…
- Explain why the daughter cells produced by mitosis must be genetically identical to the parent cell, and describe the ro…
- Explain how the body's defence mechanisms prevent pathogens from entering the bloodstream when a person breathes in air …
- Explain the role of decomposers and nitrifying bacteria in making nitrogen available for plant uptake.
- Explain how a nerve impulse is transmitted from a motor neurone to an effector.
- A student uses a light microscope to view a sample of plant cells. Explain why the student needs to use a stain before v…
- Explain how cells are organised into different levels of organisation in a multicellular organism, naming each level in …