Cell – Basic Unit of life
Cell: Cell is the most structural, fundamental & functional unit of life. All living organisms constitutes cells. The cell is known as the most basic unit of life.
Characteristics of Cells :
- Cells are too small units
- Cells have an independent existence.
- Carry out all the functions required for a living being
True nucleus: Membrane around DNA & RNA found in some organisms which are called a true nucleus.
|Prokaryotic Cell||Eukaryotic Cell|
|True nucleus is absent||True nucleus is present|
|Primitive & incomplete cells||Advanced & complete cells|
|Prokaryotes are always unicellular organisms.||Eukaryotes can be both unicellular & multicellular Organisms.|
|Eg. Blue green algae||Eg. Human body|
Discovered by Robert Hooke in 1665
1.Organisms are composed of small compartments just like a honeycomb.
2.These compartments are named as cells by him after comparing honeycomb with these small compartments.
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