OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Packages Proteins
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Transports/Contains Organelles
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Holds Genetic Materials (DNA, RNA, Ribosomes, etc)
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Power House
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Detailed explanation-1: -Nucleoli are present in almost every eukaryotic cell type and represent the most prominent compartment of the cell nucleus. The primary function of the nucleolus consists in ribosomal RNA (rRNA) transcription, rRNA processing and ribosome subunit assembly (Hernandez-Verdun et al.
Detailed explanation-2: -The nucleolus contains DNA, RNA and proteins. It is a ribosome factory.
Detailed explanation-3: -The most prominent substructure within the nucleus is the nucleolus (see Figure 8.1), which is the site of rRNA transcription and processing, and of ribosome assembly.
Detailed explanation-4: -In the 1960s, it was settled that the nucleolus houses both DNA and RNA, the latter of which being transcribed there (Fakan and Bernhard 1971; Granboulan and Granboulan 1964, 1965).
Detailed explanation-5: -The nucleolus is the largest substructure in the nucleus and forms around the nucleolar organizer regions (NORs) that comprise hundreds of ribosomal RNA (rRNA) genes.