# "Describe" questions — Edexcel A-Level Biology A: Salters-Nuffield (9BN0)

> 9 questions · biology

## How to answer

Say WHAT happens, in order. No reasoning. Structure: 1. First X. 2. Then Y. 3. Then Z. Assessment Objective: AO1. Every "describe" answer on this spec is marked against exactly this pattern.

## Sample questions

1. [A student is culturing bacteria on an agar plate in a school laboratory. Describe the aseptic techniques the student sho…](https://www.gradenine.co.uk/q/a-student-is-culturing-bacteria-on-12439cc5)
2. [During a 400-metre race, a runner's muscles require a rapid increase in glucose and oxygen. Describe how the body respon…](https://www.gradenine.co.uk/q/during-a-400-metre-race-a-runner-s-2383819f)
3. [Describe how sexual reproduction in flowering plants produces a seed. Include in your answer the roles of the male and f…](https://www.gradenine.co.uk/q/describe-how-sexual-reproduction-in-flowering-54047201)
4. [A population of Arctic foxes living in a snowy environment includes individuals with white fur and individuals with brow…](https://www.gradenine.co.uk/q/a-population-of-arctic-foxes-living-75497d94)
5. [Describe how a reflex arc works to produce a rapid response when a person touches a very hot object, naming each compone…](https://www.gradenine.co.uk/q/describe-how-a-reflex-arc-works-7736b9d5)
6. [A population of lizards lives on a large island. Over thousands of years, a mountain range forms across the middle of th…](https://www.gradenine.co.uk/q/a-population-of-lizards-lives-on-8017024e)
7. [Describe how the products of photosynthesis are used by a plant, and explain why photosynthesis is essential for the pla…](https://www.gradenine.co.uk/q/describe-how-the-products-of-photosynthesis-89678a83)
8. [A scientist studied a section of DNA and found that it contained 120 bases. The scientist then observed the process of t…](https://www.gradenine.co.uk/q/a-scientist-studied-a-section-of-b77f76ae)

## Related

- [Edexcel A-Level Biology A: Salters-Nuffield (9BN0) revision notes](https://www.gradenine.co.uk/learn/edexcel-a-level-biology-a-salters-nuffield-9bn0)
- [Edexcel A-Level Biology A: Salters-Nuffield (9BN0) past papers](https://www.gradenine.co.uk/past-papers/edexcel-a-level-biology-a-salters-nuffield-9bn0)
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