Question

Nucleolus is made up of

• A. DNA and RNA
• B. Lipid + protein
• C. RNA and protein
• D. Phospholipid

Answer 1

The correct option is C

RNA and protein

The correct option is C.

Explanation for the correct option:

Option C:

1. The nucleolus is the largest structure present in the nucleus of eukaryotic cells.
2. The nucleolus primarily serves as the site of ribosome synthesis and assembly.
3. The nucleolus also has other important functions like the assembly of signal recognition particles and playing a role in the cell's response to stress.
4. It is made of proteins and RNA and forms around specific chromosomal regions.

Explanation for the incorrect options:

Option A:

DNA is not present in the nucleolus. It is present in condensed form in the nucleus.

Option B:

Lipid is absent in the nucleolus it is present in the cell membrane.

Option D:

A phospholipid is absent in the nucleus as it is an integral part of the structure of the cell membrane.

Final answer: Nucleolus is made up of RNA and protein.