Question

Distinguish between nucleolus and nucleus.

• A. Nucleolus- RNA rich part, Nucleus- DNA rich part
• B. Nucleolus- Synthesize ribosomes, Nucleus- Controls all the cell processes
• C. Both A and B
• D. None of these

Answer 1

Answer: (C)

Both A and B

The nucleus is covered with the double membrane in a eukaryotic cell in which, most of the genetic material (DNA) is present. It remains separated from the cytoplasm by a double-membraned nuclear envelope. Nucleus regulates all the cellular activities by controlling the enzymes required for cellular
processes. Enzymes are proteins and protein synthesis is controlled by nucleus as mRNA required for protein synthesis, is made from DNA which is situated in the nucleus.
The nucleolus is the largest structure present in the nucleus. The nucleolus is an RNA-rich rounded, darkly-stained structure present inside the nucleus. Its function is to synthesize ribosomes and store RNA.