Prokaryotic organisms (1.3) | Pearson Edexcel International GCSE (9–1) Biology (Linear) — 4BI1 | KnowledgeSet

Prokaryotic organisms

Biology · IGCSE · Edexcel · Pearson Edexcel International GCSE (9–1) Biology (Linear) — 4BI1 · Specification point · 1.3 · The nature and variety of living organisms · Variety of living organisms

Prokaryote kingdom

Bacterial cell structure

Bacterial diversity

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Students should:
$1.3 describe the common features shown by prokaryotic organisms such as bacteria Bacteria: these are microscopic single-celled organisms; they have a cell wall, cell membrane, cytoplasm and plasmids; they lack a nucleus but contain a circular chromosome of DNA; some bacteria can carry out photosynthesis but most feed off other living or dead organisms. Examples include Lactobacillus bulgaricus, a rod-shaped bacterium used in the production of yoghurt from milk, and Pneumococcus, a spherical bacterium that acts as the pathogen causing pneumonia.$

Students should:

1.3 describe the common features shown by prokaryotic organisms such as bacteria Bacteria: these are microscopic single-celled organisms; they have a cell wall, cell membrane, cytoplasm and plasmids; they lack a nucleus but contain a circular chromosome of DNA; some bacteria can carry out photosynthesis but most feed off other living or dead organisms. Examples include Lactobacillus bulgaricus, a rod-shaped bacterium used in the production of yoghurt from milk, and Pneumococcus, a spherical bacterium that acts as the pathogen causing pneumonia.