# Describe the role of the sugar molecule in the structure of nucleic acids and Explain how its variation between DNA and RNA affects the function of each type of nucleic acid.

> IB DP Biology Higher Level (2023 syllabus) — A1.2 Nucleic acids · Describe, Explain · 4 marks

## Mark scheme (4 marks)

1. description of the role of the sugar molecule in the structure of nucleic acids
2. identification of the sugar molecule in DNA
3. identification of the sugar molecule in RNA
4. explanation of how the variation in sugar molecule affects the function of DNA and RNA

## Related

- [Revision notes for IB DP Biology Higher Level (2023 syllabus)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe, Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/describe-the-role-of-the-sugar-3888e138) · Published by Druglandscape Ltd.