Factory of ribosomal synthesis is:
Correct answer: C. Nucleolus
- A. Cytoplasm
- B. Nucleus
- C. Nucleolus
- D. Endoplasmic reticulum
Explanation
The nucleolus is a distinct structure within the nucleus, primarily responsible for the synthesis of ribosomal RNA (rRNA) and the assembly of ribosomal subunits. This is why it is referred to as the 'factory' of ribosomal synthesis. The cytoplasm, while essential for many cellular processes, does not synthesize ribosomes. The nucleus contains the nucleolus, but ribosomal synthesis occurs specifically in the nucleolus itself. The endoplasmic reticulum is involved in protein and lipid synthesis, but not in the synthesis of ribosomal subunits.
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