Last Updated Sep 27, 2025

Structure and Shape Simplified Revision Notes for Leaving Cert Biology

Revision notes with simplified explanations to understand Structure and Shape quickly and effectively.

Learn about Viruses for your Leaving Cert Biology Exam. This Revision Note includes a summary of Viruses for easy recall in your Biology exam

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Structure and Shape

Structure

Viruses contain:

• A protein coat called a capsid.
• A single strand of DNA or RNA (not both).

Shape

1. Round e.g. flu
2. Rod shaped e.g. tobacco mosaic virus
3. Complex e.g. bacteriophage (a virus that affects bacteria)

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