SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cell wall
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nucleolus
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chromosomes
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nuclear membrane
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Detailed explanation-1: -The nucleolus is the largest nuclear organelle and is the primary site of ribosome subunit biogenesis in eukaryotic cells. It is assembled around arrays of ribosomal DNA genes, forming specific chromosomal features known as nucleolar organizing regions (NORs) which are the sites of ribosomal DNA transcription.
Detailed explanation-2: -The nucleolus is the most prominent structure in a cell nucleus. It is the site of ribosomal RNA (rRNA) transcription, pre-rRNA processing and ribosome subunit assembly.
Detailed explanation-3: -The nucleolus is the dense nuclear body that is the packaging site for ribosomes. Cells that are actively producing proteins will have a prominent nucleolus visible by microscopy.
Detailed explanation-4: -Ribosomes are attached to the cytosolic face of the ER membrane.
Detailed explanation-5: -A ribosome is an intercellular structure made of both RNA and protein, and it is the site of protein synthesis in the cell.