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Class notes on cells.
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Title : The Fundamental unit of life-> cell as the basic unit of life .
-> cell is the fundamental unit of life .
All
living Organisms composed of cells
->
are -
-> Cells are the smallest structural and functional units of life .
of the
->
Discovery cells :
-> Robert Hooke First observed and named "cells" while studying
under
cork a
microscope .
Anton Van Leeuwenhoek observed
->
microorganisms through a
simple microscope .
->
Types of cells .
cells
-- I
prokaryotic Eukaryotic
, classified into two
broadly types
-> cells are .
D prokaryotic cells
⑫ Eukaryotic cells .
I
cells
->
Gokaryotic cells ->
Eukaryotic
1 They simpler in structure
are 1.
They are more
complex and
compared to eukaryotic cells .
structurally organized .
2) They lack a true , membrane-bound 2) They have a well-defined ,
Instead their
nucleus .
genetic membrane-bound nucleus that contains
material is found in called the
genetic material (DNA)-
a
region
the nucleoid .
3)
prokaryotic cells are
ly pically
-
3) They are
generally larger and
smaller in
sizes .
more
compartmentalized containing ,
membrane-bound
various
organelles .
4) found 4) They found
They are in domains are
and in some
in multicellular
Bacteria and Archae-
organisms single-
celled
organisms .
5 E g : E coli
.
.
and Cyanobacteria 5) E g: .
Animals , plants , fungi and
profists
I
.
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