Question

The cells of all organisms contain DNA. In cells of which of the following groups is the cellular DNA enclosed in a nucleus?

a
viruses
b
eukaryotes
c
prokaryotes
d
bacteria

Answer 1

The cellular DNA is enclosed in a nucleus in the cells of **b) eukaryotes**. Eukaryotic cells, which include organisms such as animals, plants, fungi, and protists, have a defined nucleus that contains their DNA. In contrast, prokaryotes (including bacteria and archaea) do not have a nucleus; their DNA is located in a region called the nucleoid. Viruses do not have cellular structures and therefore do not have enclosed DNA in the same manner.