Import Question JSON

Current Question (ID: 11517)

Question:

The co-factor required for the activity of pyruvate dehydrogenase is:

Options:

1. Zinc
2. Magnesium
3. Manganese
4. Copper

Solution:

The cofactor required for the activity of pyruvate dehydrogenase is magnesium. Pyruvate dehydrogenase is an enzyme complex that catalyzes the conversion of pyruvate to acetyl-CoA in the mitochondria of eukaryotic cells. This reaction is a crucial step in the aerobic respiration of glucose, as it links glycolysis with the Krebs cycle. The pyruvate dehydrogenase complex requires several cofactors for its activity, including thiamine pyrophosphate (vitamin B1), lipoic acid, coenzyme A, flavin adenine dinucleotide (FAD), and nicotinamide adenine dinucleotide (NAD+). In addition to these cofactors, the enzyme also requires magnesium ions as a cofactor for its activity. Magnesium ions are involved in the binding of pyruvate and the transfer of electrons during the reaction.

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
}