NEET BIOLOGY

Detailed explanation-1: -Processing and assembly begin in the nucleolus, continue in the nucleoplasm and are completed in the cytoplasm.

Detailed explanation-2: -Ribosomes are mostly constructed in the cell nucleus, but the final stages of assembly occur in the cytoplasm of the cell. A protein called Nmd3 binds to the partly constructed ribosome to export it out of the nucleus.

Detailed explanation-3: -Ribosome assembly is an intricate process. The early stages of the assembly, shown above, takes place inside the nucleolus, a structure deep inside the cell’s nucleus. All cells need ribosomes to make the proteins necessary for life.

Detailed explanation-4: -In eukaryotes, ribosome assembly is a complex process involving more than 200 assembly factors and spreads from the nucleolus to the cytoplasm. The process starts with the synthesis by the RNA Pol-I of the 35S pre-rRNA, which is co-transcriptionally bound and folded by ribosomal proteins and assembly factors.

Detailed explanation-5: -The nucleolus is a dynamic membrane-less structure whose primary function is ribosomal RNA (rRNA) synthesis and ribosome biogenesis.