Generate narration from your transcript
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"slide": 1,
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"text_description": "Cell: Tiny Units of Life\nStep inside the microscopic world where life begins.",
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{
"slide": 2,
"fragments": [
{
"fragment_index": -1,
"text_description": "What Is a Cell?",
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{
"fragment_index": 1,
"text_description": "Cell",
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{
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"text_description": "Smallest living unit that can grow, reproduce, and perform all chemical reactions needed for life.",
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{
"fragment_index": 3,
"text_description": "Unicellular: one cell manages every task. Multicellular: many specialised cells share the work.",
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{
"slide": 3,
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"text_description": "Cell Theory",
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"text_description": "1\nMatthias Schleiden (1838)\nEvery plant is built of cells; the cell is the basic structural unit.",
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},
{
"fragment_index": 2,
"text_description": "2\nTheodor Schwann (1839)\nAll animals are also cellular, revealing a universal “unit of life.”",
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{
"fragment_index": 3,
"text_description": "3\nRudolf Virchow (1855)\nNew cells originate only from pre-existing cells—\nOmnis cellula e cellula\n.",
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{
"fragment_index": 4,
"text_description": "Pro Tip:\nRemember these three pillars—structure, universality, continuity—to quickly recall NCERT § 8.2 and restate cell theory.",
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]
},
{
"slide": 4,
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"fragment_index": -1,
"text_description": "Inside a Typical Cell",
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{
"fragment_index": 1,
"text_description": "Main Points\n1\nPlasma membrane\n2\nCytoplasm\n3\nNucleus",
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{
"fragment_index": 2,
"text_description": "Key Highlights\nSelective barrier controlling what enters/leaves.\nFluid matrix hosting organelles and reactions.\nDNA vault; issues genetic instructions.\nDetailed in NCERT §8.3.",
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}
]
},
{
"slide": 5,
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{
"slide": 6,
"fragments": [
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"fragment_index": -1,
"text_description": "Two Cell Worlds (8.4 & 8.5)",
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"text_description": "Prokaryote\nSize : 1–5 µm\nNo membrane-bound nucleus\n70S ribosomes\nRapid binary fission",
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},
{
"fragment_index": 2,
"text_description": "Eukaryote\nSize : 10–20 µm\nTrue, membrane-bound nucleus\n80S ribosomes\nMembrane-bound organelles",
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},
{
"fragment_index": 3,
"text_description": "Key Similarities\nBoth have a plasma membrane\nBoth contain DNA\nBoth perform metabolism",
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},
{
"slide": 7,
"fragments": [
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"fragment_index": 1,
"text_description": "Sizing Up Cells",
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{
"fragment_index": 2,
"text_description": "Relative sizes of various cells (log scale)",
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"fragment_index": 3,
"text_description": "Cell size spans several powers of ten\nSection 8.4 shows that cells vary from sub-micrometre microbes to egg cells large enough to see.\nComparing familiar examples helps you visualise this extraordinary range.\nKey Points:\nMycoplasma — ~0.1 µm, one of the smallest living cells.\nEscherichia coli — ~1 µm rod-shaped bacterium.\nHuman red blood cell — ~7 µm diameter.\nTypical plant/animal cell — 20–30 µm.\nOstrich egg — ~170 mm, the largest known single cell.",
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]
},
{
"slide": 8,
"fragments": [
{
"fragment_index": -1,
"text_description": "Meet the Endomembrane\nTrace how biomolecules travel: ER → Golgi → lysosome/vacuole.",
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{
"fragment_index": 1,
"text_description": "1\nRough ER\nRibosome-studded sheets fold and modify proteins for secretion.",
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{
"fragment_index": 2,
"text_description": "2\nSmooth ER\nSynthesises lipids, stores Ca\n2+\n, and detoxifies drugs.",
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{
"fragment_index": 3,
"text_description": "3\nGolgi Apparatus\nSorts, tags, and packs ER cargo into vesicles for delivery.",
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"fragment_index": 4,
"text_description": "4\nLysosome\nAcidic enzymes break down waste, pathogens, and old organelles.",
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"fragment_index": 5,
"text_description": "5\nVacuole (plants)\nStores water, ions, and pigments; keeps cells firm via turgor.",
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{
"fragment_index": 6,
"text_description": "Pro Tip:\nTogether, these organelles form a pipeline that moves molecules from synthesis to secretion.",
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},
{
"slide": 9,
"fragments": [
{
"fragment_index": 1,
"text_description": "Quick Check",
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"fragment_index": 2,
"text_description": "Question\nChoose the correct answer (CBSE 8.5.4): Which organelle is rightly called the ‘powerhouse’ of the cell?",
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{
"fragment_index": 3,
"text_description": "1\nEndoplasmic reticulum",
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},
{
"fragment_index": 4,
"text_description": "2\nGolgi apparatus",
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{
"fragment_index": 5,
"text_description": "3\nMitochondrion",
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{
"fragment_index": 6,
"text_description": "4\nLysosome",
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},
{
"fragment_index": 7,
"text_description": "Hint:\nThink about where ATP is produced.",
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{
"fragment_index": 8,
"text_description": "Submit Answer",
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"text_description": "Correct!\nSpot on! ATP generation happens here.\nIncorrect\nNot quite—recall which organelle performs aerobic respiration.\nconst correctOption = 2;\n const answerCards = document.querySelectorAll('.answer-card');\n const submitBtn = document.getElementById('slide-09-ab3c9x-submitBtn');\n const feedbackCorrect = document.getElementById('slide-09-ab3c9x-feedbackCorrect');\n const feedbackIncorrect = document.getElementById('slide-09-ab3c9x-feedbackIncorrect');\n\n let selectedOption = null;\n\n answerCards.forEach((card, index) => {\n card.addEventListener('click', () => {\n answerCards.forEach(c => c.classList.remove('border-blue-500', 'bg-blue-50'));\n card.classList.add('border-blue-500', 'bg-blue-50');\n selectedOption = index;\n });\n });\n\n submitBtn.addEventListener('click', () => {\n if (selectedOption === null) return;\n\n if (selectedOption === correctOption) {\n feedbackCorrect.classList.remove('hidden');\n feedbackIncorrect.classList.add('hidden');\n } else {\n feedbackIncorrect.classList.remove('hidden');\n feedbackCorrect.classList.add('hidden');\n }\n });",
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{
"slide": 10,
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"text_description": "Key Takeaways\nThank You!\nWe hope you found this lesson informative and engaging.",
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{
"fragment_index": 1,
"text_description": "All life is cellular.",
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},
{
"fragment_index": 2,
"text_description": "Cell theory unifies biology.",
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{
"fragment_index": 3,
"text_description": "Membrane, cytoplasm, nucleus = core triad.",
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{
"fragment_index": 4,
"text_description": "Prokaryotes vs eukaryotes differ in complexity.",
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{
"fragment_index": 5,
"text_description": "Organelles divide labour inside eukaryotic cells.",
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{
"fragment_index": 6,
"text_description": "Next Steps\nExplore mitosis and meiosis in the upcoming lesson.",
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}
]
}
]