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"text_description": "The Living Cell\nWhere every spark of life begins.",
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"slide": 2,
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"text_description": "What is a Cell?",
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"text_description": "Cell",
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"text_description": "The smallest structural and functional unit of life, able to carry out metabolism, growth, and reproduction on its own.\n1665–1676 Leeuwenhoek saw living “animalcules”; 1838–39 Schleiden & Schwann formalised Cell Theory. Ponder: Why can nothing smaller than a whole cell survive independently?",
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"slide": 3,
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"text_description": "Cell Diversity",
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"text_description": "Figure: Variety of cell shapes in plants and animals",
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"text_description": "Form Follows Function\nEach cell shape is specialised to optimise its task.\nDrag every label onto the matching silhouette to prove that shape reveals function.",
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"text_description": "Key Examples:\nRBC – biconcave disc; large surface area speeds O₂ exchange.\nWBC – flexible amoeboid; squeezes through tissues to fight germs.\nNerve cell – long axon; rapid electrical transmission.\nTracheid – elongated tube; water climbs in xylem.\nColumnar epithelium – tall columns; absorbs and protects lining.\nMesophyll cell – irregular with chloroplasts; maximises light capture in leaves.",
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{
"slide": 4,
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"text_description": "Two Cellular Worlds",
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"text_description": "",
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"text_description": "Prokaryote vs Eukaryote\nEukaryotes are 10–100 µm and packed with membrane-bound organelles that separate tasks.\nProkaryotes stay small at 0.1–5 µm, lack organelles, and run all reactions in an open cytoplasm.\nTheir compact genome lets bacteria copy DNA swiftly, giving them faster division rates.",
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"text_description": "Key Points:\nSize: Prokaryote < Eukaryote, roughly one order of magnitude.\nStructure: Organelles create compartmentalisation only in eukaryotes.\nQuiz → Faster bacterial growth mainly stems from their compact genome.",
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},
{
"slide": 5,
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"slide": 6,
"fragments": [
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"fragment_index": -1,
"text_description": "Plant vs Animal Cells",
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"text_description": "",
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"text_description": "Distinct Organelles\nPlant cells possess a sturdy cellulose cell wall that maintains shape and prevents bursting.\nChloroplasts in plant cells trap light energy to build food through photosynthesis.\nAnimal cells carry centrioles, microtubule cylinders that organize the spindle during division.\nKey Points:\nCell wall: rigid support in plants; absent in animals.\nChloroplast: photosynthesis engine of plant cells.\nCentrioles: spindle organizers unique to animal cells.",
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{
"slide": 7,
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"text_description": "Chromosome Geometry\nCentromere Position → Chromosome Type\nCentromere position sets the relative length of the two chromosomal arms.\nUse this position to classify chromosomes into four geometric types.\nQuick check: Which type has equal arms?",
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"text_description": "Key Points:\nMetacentric: centromere central; p and q arms equal in length.\nSub-metacentric: centromere slightly off-centre; one arm a bit longer.\nAcrocentric: centromere close to one end; short p arm, long q arm.\nTelocentric: centromere at terminal end; practically only one arm visible.",
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},
{
"slide": 8,
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"text_description": "Key Takeaways\nCell theory in one minute",
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"text_description": "Universal Unit\nEvery organism is built from one or more cells.",
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"text_description": "Structure Drives Function\nCell shape and specific organelles dictate specialised roles.",
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"text_description": "Selective Boundaries\nPlasma membrane controls entry and exit; pumps spend ATP.",
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"text_description": "Energy Hubs\nMitochondria and chloroplasts convert nutrients or light into ATP.",
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"text_description": "Hereditary Blueprint\nChromosomes organise DNA; next explore mitosis and meiosis.",
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