1. A cell is a structural and functional unit of any
living organism. All living beings are made up
of cells.
2. Eukaryotic Cells – These are cells that have
true nucleus. Plants, animals, fungi and
protists are composed of eukaryotic cells
Prokaryotic Cell – These are cells that do not
have a true nucleus. Organisms that have
prokaryotic cells include bacteria and
archaeans.
3. Prokaryotic organisms are the most primitive
organisms on the earth. They can live in an
atmosphere that is not fit for another
organisms. They can thrive in very dreadful
environment.
4. Cells contain DNA, the genetic material
necessary for directing cellular activities. It is
a molecule known as nucleic acid. DNA is not
separated from rest of the cell but is
suspended in the region of cell, known as
cytoplasm. But in Eukaryotic cells, it is
located within the cell’s nucleus.
6. Nucleus is the centre of a cell. It is the main
part of the cell. It regulates all the activities of
all cell organelles. The main function of
nucleus is to synthesize RNA.
7. Mitochondria is called the power house of
cell. It helps in the formation of energy in the
form of ATP.
8. Endoplasmic reticulum forms a network for
transporting molecules. There are two types
of ribosomes, one known as rough and the
other known as smooth endoplasmic
reticulum. Rough endoplasmic reticulum has
ribosomes molecules attached to their
surface where as smooth endoplasmic
reticulum do not have ribosomes attached to
their surface.
9. Ribosomes are responsible for protein
synthesis. They can be either found floating
in the surface of the cell or can be seen
attached to endoplasmic reticulum.
