Cell- Fundamental Unit Of Life Class 9 Chapter 5
Prokaryotic Cell
Those cells in which nuclear region is poorly defined or undefined due to the absence of nuclear membrane. Such undefined nucleus in prokaryotic cells only contain Nucleic Acid and hence called Nucleoid.
- Example- Bacteria Cell
Eukaryotic Cell
Those cell in which nuclear region is well defined i.e. surrounded by nuclear membrane.
- Example- Amoeba, Humans, animals, Plants etc.
Difference between Prokaryotic and Eukaryotic Cells
Prokaryotic Cell
- It is smaller in size 1-10 µm (micro-metre).
- Nuclear region is not well defined
- Single chromosome is present.
- Membrane bound cell organelles are absent.
- Nucleolus is absent
- Example- Bacteria
Eukaryotic Cell
- It is larger in size 5-100 μm.
- Nuclear region is well defined.
- More than one chromosome are present.
- Membrane bound cell organelles are present
- Nucleolus of present
- Example- Amoeba