Import Question JSON

Current Question (ID: 14781)

Question:

Put the following phrases in proper order to describe what occurs at the neuromuscular junction to trigger muscle contraction:

Options:

1. II, IV, I, VI, VII, III, V
2. II, IV, VI, I, VII, III, V
3. I, II, III, IV, V, VI, VII
4. VII, VI, V, IV, III, II, I

Solution:

II. Nerve impulse: Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a motor neuron. IV. A neural signal reaching this junction releases a neurotransmitter (Acetylcholine) which generates an action potential in the sarcolemma. VI. Electrical signal reaches synaptic cleft which is converted to chemical signal to diffuse it to postsynaptic cell. I. Receptor sites on sarcolemma receives the signal. VII. This spreads through the muscle fibre. III. This causes the release of calcium ions into the sarcoplasm. V. Sarcomere shortens.

Import JSON File

Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}