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Biology

O Level · 5090 · 19 chapters
Syllabus 50902026–202819 chapters

Chapter notes for Cambridge O Level Biology (5090), for exams in 2026 to 2028. They cover cells, biological molecules and enzymes, nutrition, transport and respiration, disease and immunity, coordination, inheritance, genetic modification and ecology.

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Cells

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Syllabus chapters

01

Cells

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Classification

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Movement Into and Out of Cells

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Biological Molecules

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Enzymes

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Plant Nutrition

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Transport in Flowering Plants

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Human Nutrition

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Human Gas Exchange

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Respiration

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Transport in Humans

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Disease and Immunity

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Excretion

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Coordination and Control

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Coordination and Response in Plants

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Development of Organisms and Continuity of Life

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Inheritance

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Biotechnology and Genetic Modification

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Relationships of Organisms with One Another and with the Environment

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