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Current Question (ID: 11455)

Question:

The step of decarboxylation during C4 cycle occurs in:

Options:

1. Only Mesophyll cells
2. Bundle Sheath cells
3. both a and b
4. Passage cells

Solution:

The step of decarboxylation during the C4 cycle occurs in the bundle sheath cells. In C4 plants, the initial CO₂ fixation occurs in mesophyll cells, and then the resulting C4 molecule is transported to bundle sheath cells. In the bundle sheath cells, decarboxylation occurs, where CO₂ is released from the C4 molecule and enters the Calvin cycle for further processing. The resulting C3 molecule is transported back to the mesophyll cells, where it releases CO₂ again, completing the cycle. This allows C4 plants to efficiently concentrate CO₂ in the bundle sheath cells, reducing photorespiration and improving water-use efficiency.

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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
}