alleryStart learning →What is assembled in the nucleolus?
AThe subunits of the ribosomes
BThe strands of the cytoskeleton
CThe enzymes of the lysosomes
DThe proteins of the cell wall
Answer & Solution
Correct answer: A. The subunits of the ribosomes
1. Some chromosomes carry sections of DNA that encode ribosomal RNA.
2. The nucleolus is a darkly staining area within the nucleus where that RNA collects.
3. There it aggregates with associated proteins to assemble the ribosomal subunits.
4. Those subunits then leave through the pores in the nuclear envelope for the cytoplasm.
5. The nucleolus assembles ribosomal subunits.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.3 Eukaryotic Cells_
Keep practising Cell Structure
Browse all Cell Structure questions for CSIR NET, or explore more Biology topics.
Related questions
What do gap junctions and plasmodesmata have in common?Why are gap junctions especially important in cardiac muscle?How many connexin proteins arrange themselves to form one connexon?Desmosomes keep cells in sheets in which kinds of tissue?A desmosome is built from cadherins linked to which cytoskeletal element?Tight junctions in the lining of the urinary bladder serve which purpose?Which two proteins predominantly hold a tight junction together?Which tissues carry out most of the long-distance transport of water in a plant?