(a) List any thre

(a) Differences between a prokaryotic and eukaryotic cell:

Prokaryotic cell

(i) It is small in size.

(ii) The nuclear region is not well-defined.

(iii) Single chromosome is found.

Eukaryotic cell

(i) It is large in size.

(ii) The nuclear region is well-defined and is surrounded by a nuclear membrane.

(iii) More than one chromosome is present.

(b) A chromosome is composed of DNA and proteins. It is formed in the nucleus during cell division.