Answer: rRNA synthesis and ribosome assembly.
- A Unwinding and duplicating the chromosomal DNA double helix
- B Translating mRNA transcripts into completed polypeptide chains
- C rRNA synthesis and ribosome assembly
- D Coordinating chromosome segregation during mitotic division
Correct answer: C. rRNA synthesis and ribosome assembly
Explanation: The nucleolus synthesizes ribosomal RNA (rRNA) and assembles ribosome subunits.
Animal cell structure with major organelles labeled. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Cell theory, prokaryotic vs eukaryotic cells, organelles and their functions. Foundation of all biology.