4-mark practice questions — AQA GCSE Biology (8461)
119 questions · biology · View as Markdown
How to answer
4-mark questions are the shortest levels-of-response band. Aim for four scientific ideas, each in its own short sentence.
Sample questions
- Explain how thyroxine and negative feedback work together to maintain a stable metabolic rate in the body.
- Describe how plants defend themselves against attack by pathogens and insects.
- Explain why monoclonal antibodies are described as 'monoclonal' and outline one advantage this property gives when using…
- A marine food chain contains the following organisms: phytoplankton → krill → mackerel → dolphin. Describe what is meant…
- Explain how cells, tissues, and organs are related to each other in a multicellular organism. Use an example of a named …
- Explain how sustainable fisheries help to maintain fish stocks for future generations.
- Describe what happens in the muscles during vigorous exercise when the body cannot supply enough oxygen, and explain why…
- Describe how mutations contribute to variation within a population, and explain why most mutations have no effect on the…