# "Describe and explain" questions — AQA A-Level Biology (7402)

> 10 questions · biology

## How to answer

"describe and explain" questions from AQA A-Level Biology (7402). Read the rubric carefully — the marking points cluster into scientific ideas rather than free-form prose.

## Sample questions

1. [Describe the role of enzymes in digestion and explain why a protease enzyme cannot break down starch.](https://www.gradenine.co.uk/q/describe-the-role-of-enzymes-in-02c457a1)
2. [A muscle cell is damaged during exercise. Describe how mitosis allows the body to replace the damaged muscle cell, and e…](https://www.gradenine.co.uk/q/a-muscle-cell-is-damaged-during-256afc76)
3. [A scientist is investigating molecules found in cell membranes and in the adipose tissue of a deep-diving whale. Describ…](https://www.gradenine.co.uk/q/a-scientist-is-investigating-molecules-found-72b88c90)
4. [Describe the structure of a lipid molecule and explain why lipids are important in the human body.](https://www.gradenine.co.uk/q/describe-the-structure-of-a-lipid-8a4e9d03)
5. [Describe how organisms are classified using the Linnaean taxonomic hierarchy, and explain why organisms in the same genu…](https://www.gradenine.co.uk/q/describe-how-organisms-are-classified-using-8c550fe6)
6. [Describe the structure of a DNA molecule and explain how this structure allows DNA to be copied accurately during cell d…](https://www.gradenine.co.uk/q/describe-the-structure-of-a-dna-c4fcee01)
7. [Describe how nitrogen from the atmosphere is made available to plants, and explain why plants need nitrogen.](https://www.gradenine.co.uk/q/describe-how-nitrogen-from-the-atmosphere-dbd5d0e6)
8. [Describe the structure of a DNA nucleotide and explain how nucleotides are joined together to form a single strand of DN…](https://www.gradenine.co.uk/q/describe-the-structure-of-a-dna-e01f77ee)

## Related

- [AQA A-Level Biology (7402) revision notes](https://www.gradenine.co.uk/learn/aqa-a-level-biology-7402)
- [AQA A-Level Biology (7402) past papers](https://www.gradenine.co.uk/past-papers/aqa-a-level-biology-7402)
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