Question

Which one of the following contains the genetic material of a eukaryotic cell?
A. Golgi apparatus
B. Mitochondria
C. Nucleolus
D. Nucleus

Answer 1

Hint: In a eukaryotic cell, the genetic material consists of a genome or nuclear DNA. As the eukaryotic cell is very small and the DNA being a long molecule and present in many copies within the cell is tightly packed into chromosomes to be able to get located inside the eukaryotic cell.

Complete step by step answer:
-Option (A) is incorrect. The Golgi apparatus present in the eukaryotic cell performs the function of sorting, modifying, and packaging the proteins that are produced by the translation process in the cell. It is also known for transporting lipid molecules across the cell. The functioning of the Golgi apparatus is controlled by the cell’s DNA.
-Option (B) is incorrect. A mitochondrion is an organelle that performs the function of ATP (energy currency of the cell) synthesis. It also contains its DNA which is known as the mitochondrial DNA and thus the functioning of mitochondria is controlled by its DNA.
-Option (C) is incorrect. The nucleolus is present inside the nucleus which is a larger structure that is involved in the synthesis and assemblage of RNA.
-Option (D) is correct. The nucleus contains the genetic material of a eukaryotic cell which is known as the nuclear DNA or genome. It is a double membrane-bound organelle present inside the cell.
Hence, the correct option is (D).

Note: DNA stands for deoxyribonucleic acid and is present inside the nucleus of the eukaryotic cell. The tight packing of DNA into a chromosome not only allows DNA to fit inside the nucleus but also helps to regulate the gene expression.