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HomePearson Edexcel International IGCSE BiologyThe Nature and Variety of Living Organisms
Pearson Edexcel International · IGCSE · Biology · Revision Notes

The Nature and Variety of Living Organisms

69 words · Last updated July 2026

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What you'll learn

The features of living things and how they are grouped.

Key ideas

  • Characteristics of living organisms (MRS GREN).
  • Groups: plants, animals, fungi, bacteria, protoctists; viruses (non-cellular).
  • Cells and biological molecules (carbohydrates, proteins, lipids).

Exam tips

  • Learn the characteristics of life.
  • Know the key features of each group.

Common mistakes

  • Calling viruses cells.
  • Confusing the kingdoms.
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