{
  "title": "Cell Biology Revision",
  "is_fun": false,
  "questions": [
    {
      "type": "mcq",
      "question": "Which organelle produces most cellular ATP?",
      "options": ["Mitochondrion", "Ribosome", "Lysosome", "Nucleus"],
      "answer": "Mitochondrion",
      "marks": 1
    },
    {
      "type": "short",
      "question": "What molecule carries genetic information?",
      "answer": "DNA",
      "marks": 2
    },
    {
      "type": "long",
      "question": "Explain how membrane structure supports selective transport.",
      "marks": 10
    }
  ]
}