Edexcel OLevel Biology revision notes

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Lesson

Lesson-2.1.2- describe cell structures, including the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole.

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Lesson-2.1.1- describe the levels of organisation in organisms: organelles, cells, tissues, organs and systems.Previous Lesson-2.1.3- describe the functions of the nucleus, cytoplasm, cell membrane, cell wall, mitochondria, chloroplasts, ribosomes and vacuole.Next