The ribosomal RNA is synthesized and stored in:
Correct answer: B. Nucleolus
- A. Endoplasmic reticulum
- B. Nucleolus
- C. Golgi complex
- D. Chromosomes
Explanation
The nucleolus is the specialized structure within the nucleus where ribosomal RNA (rRNA) is synthesized and stored. It is also the site of the initial assembly of ribosomal subunits. The endoplasmic reticulum and Golgi complex are involved in other cellular processes, such as protein and lipid synthesis and processing, and do not contribute to the synthesis or storage of rRNA. Chromosomes contain the DNA that encodes rRNA, but the actual synthesis and assembly occur in the nucleolus, not within the chromosomes themselves.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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