Question

What are two major differences between prokaryotic and eukaryotic cell structures?

Answer 1

Prokaryotic cell:

1. Cells that lack a well-defined nucleus are called prokaryotic cells.
2. Prokaryotic cells do not have membrane-bound nuclei or organelles.
3. They are unicellular organisms.

Eukaryotic cell:

1. Cells having a well-defined nucleus are called eukaryotic cells.
2. They contain a nucleus and organelles which are bound by plasma membranes.
3. They are usually multicellular organisms.

Prokaryotic cell	Eukaryotic cell
1. Prokaryotic cells are unicellular organisms.	1. Eukaryotic cells are unicellular or multicellular
2. It contains a single chromosome.	2. It contains more than one chromosome.
3. They are membrane-bound cell organelles such as plastids, mitochondria, endoplasmic reticulum, Golgi apparatus, etc. are absent.	3. Cell organelles such as plastids, mitochondria, endoplasmic reticulum, Golgi apparatus, etc. are present.
4. Cell division occurs only by mitosis.	4. Cell division occurs only by mitosis and meiosis.
5. Examples: Bacteria and blue-green bacteria.	5. Examples: Plant cells and animals cells