The nucleolus is the site of
Correct answer: B. synthesis of ribosomal RNA and assembly of ribosomal subunits
- A. DNA replication
- B. synthesis of ribosomal RNA and assembly of ribosomal subunits
- C. protein synthesis for export
- D. storage of the cell's lipid reserve
Explanation
The nucleolus is a dense region of the nucleus with no membrane around it, and it transcribes ribosomal RNA and combines it with proteins to form the subunits that are then exported through the nuclear pores. Cells making large quantities of protein have prominent nucleoli, which is a useful clue under the microscope. Protein synthesis itself takes place on the ribosomes in the cytoplasm.
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About Cytoplasmic Organelles
Cytoplasmic organelles are the specialized structures suspended in cytoplasm, including mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles and centrosomes. Questions compare their structures and functions in animal and plant cells, including chloroplasts and the role of the endomembrane system in transport and secretion.
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