Import Question JSON

Current Question (ID: 13742)

Question:
The function of the gap junction is to?
Options:
  • 1. Perform cementing to keep neighbouring cells together
  • 2. Facilitate communication between adjoining cells by connecting the cytoplasm for rapid transfer of ions, small molecules and some large molecules
  • 3. Separate two cells from each other
  • 4. Stop substances from leaking across a tissue
Solution:
In animal tissue, three types of cell junctions are found in the epithelium: Tight junctions (Zona occludens) - It helps to stop substances from leaking across a tissue. Plasma membranes in the apical parts of adjacent epithelial cells become tightly packed together or are even fused to form the tight junctions. Adhering junction - It performs cementing to keep neighboring cells together. They are also known as Desmosomes serve anchoring function. Gap junctions - It facilitates the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions and molecules and sometimes big molecules.

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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
}