Import Question JSON

Current Question (ID: 12855)

Question:

Kinetin (cytokinin) was first discovered as a breakdown product of

Options:

1. DNA
2. t-RNA
3. Spindle fibres
4. m-RNA

Solution:

Kinetin (cytokinin) was first discovered as a breakdown product of DNA. Kinetin was first discovered as a growth-promoting substance in herring sperm DNA extract by the plant physiologist Folke Skoog and his colleagues in 1955. They found that kinetin was able to stimulate the division of plant cells in culture and could replace the requirement for cytokinins in the growth medium. Later, kinetin was identified as a type of cytokinin, a class of plant hormones that promote cell division and growth. Kinetin is not a breakdown product of t-RNA, spindle fibers, or m-RNA.

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
}