Question:
Which one of the following is the site for active ribosomal RNA synthesis?
Which one of the following is the site for active ribosomal RNA synthesis?
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The Nucleolus is the rRNA factory. No membrane means it can quickly export ribosomal subunits to the cytoplasm!
Updated On: May 4, 2026
- Kinetochore
- Centrosome
- Chromatin
- Nucleolus
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The Correct Option is D
Solution and Explanation
The nucleus contains various structures, each with specialized functions related to genetic material management.
• Nucleolus: It is a non-membrane bound, spherical structure found within the nucleoplasm. It is the specific site for active ribosomal RNA (rRNA) synthesis. Larger and more numerous nucleoli are found in cells actively carrying out protein synthesis.
• Kinetochore: These are disc-shaped structures on the sides of the centromere where spindle fibers attach during cell division.
• Centrosome: An organelle usually containing two cylindrical structures called centrioles; it is involved in organizing microtubules for cell division.
• Chromatin: The loose and indistinct network of nucleoprotein fibers containing DNA and proteins that condenses to form chromosomes.
• Nucleolus: It is a non-membrane bound, spherical structure found within the nucleoplasm. It is the specific site for active ribosomal RNA (rRNA) synthesis. Larger and more numerous nucleoli are found in cells actively carrying out protein synthesis.
• Kinetochore: These are disc-shaped structures on the sides of the centromere where spindle fibers attach during cell division.
• Centrosome: An organelle usually containing two cylindrical structures called centrioles; it is involved in organizing microtubules for cell division.
• Chromatin: The loose and indistinct network of nucleoprotein fibers containing DNA and proteins that condenses to form chromosomes.
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