{
  "id": "c99234e8-6399-51f9-aee8-2a5849fdece4",
  "slug": "b3-3-muscle-and-motility",
  "title": "B3.3 Muscle and Motility",
  "course": "IB Biology",
  "level": "HL",
  "syllabusCode": "B3.3",
  "questionCount": 10,
  "page": "https://splycr.com/ib-biology/b3-3-muscle-and-motility",
  "data": "https://splycr.com/library/b3-3-muscle-and-motility.json",
  "play": "https://splycr.com/?set=c99234e8-6399-51f9-aee8-2a5849fdece4",
  "section": {
    "name": "Theme B: Form and function",
    "page": "https://splycr.com/ib-biology/form-and-function"
  },
  "source": {
    "name": "Biology by Bradford",
    "href": "https://biologybybradford.com"
  },
  "questions": [
    {
      "number": 1,
      "question": "The basic functional and contractile unit of skeletal muscle?",
      "answer": "Sarcomere",
      "wrongOptions": [
        "Myofibril",
        "Troponin",
        "T-tubule"
      ]
    },
    {
      "number": 2,
      "question": "A bundle of protein filaments within a muscle fiber?",
      "answer": "Myofibril",
      "wrongOptions": [
        "Tropomyosin",
        "Sarcomere",
        "Troponin"
      ]
    },
    {
      "number": 3,
      "question": "The thin protein filament containing binding sites for myosin?",
      "answer": "Actin",
      "wrongOptions": [
        "Titin",
        "Troponin",
        "Tropomyosin"
      ]
    },
    {
      "number": 4,
      "question": "The thick protein filament with heads that bind to actin?",
      "answer": "Myosin",
      "wrongOptions": [
        "Troponin",
        "T-tubule",
        "Myofibril"
      ]
    },
    {
      "number": 5,
      "question": "The border of a sarcomere where actin filaments are anchored?",
      "answer": "Z line",
      "wrongOptions": [
        "Myosin",
        "Sarcomere",
        "Myofibril"
      ]
    },
    {
      "number": 6,
      "question": "The modified ER in muscle cells that stores and releases calcium ions?",
      "answer": "Sarcoplasmic reticulum",
      "wrongOptions": [
        "Z line",
        "Sarcomere",
        "Tropomyosin"
      ]
    },
    {
      "number": 7,
      "question": "Invaginations of the muscle cell membrane that carry action potentials inward?",
      "answer": "T-tubule",
      "wrongOptions": [
        "Myosin",
        "Sarcomere",
        "Troponin"
      ]
    },
    {
      "number": 8,
      "question": "The protein that blocks myosin-binding sites on actin when the muscle is relaxed?",
      "answer": "Tropomyosin",
      "wrongOptions": [
        "Troponin",
        "T-tubule",
        "Sarcomere"
      ]
    },
    {
      "number": 9,
      "question": "The regulatory protein that moves tropomyosin once calcium binds to it?",
      "answer": "Troponin",
      "wrongOptions": [
        "Tropomyosin",
        "T-tubule",
        "Sarcomere"
      ]
    },
    {
      "number": 10,
      "question": "The massive, spring-like protein that spans from the Z-line to the M-line?",
      "answer": "Titin",
      "wrongOptions": [
        "Actin",
        "Myosin",
        "Troponin"
      ]
    }
  ]
}