Cell
The basic structural and useful unit of life is cell.
Cell structure varies in size and form.
History of cell
Robert Hooke in 1665, determined a bit of cork beneath the magnifier and noticed it to be created of tiny compartment that he referred to as “cells.”
Robert Hooke derived the name, 'cell '.
Anton Von Lewenhoek classified organisms in 2 sorts by the quantity of their cells.
Unicellular
Multicellular
Theory of cell
Matthias histologist and Theodore physiologist in 1938bproposed the scientific theory that was later changed by Rudolf Karl Virchow in 1885.
The theory was- All living organisms are composed of cells and merchandise of the cells.
All cells arise from pre-existing cells.
Unicellular organism
A living thing organism is associate organism that consists of one cell.
They are usually microscopic and can't be seen with the optic.
For example- rhizome, Paramecium, Euglena, plant, E coli etc.
Multicellular organism
Organisms that consist of mire than one cell are called cellular organisms.
Most cellular organisms are visible to optic.
For example- mud mites, plants, animals, insects, birds, mushrooms, etc.
Types of cell by kingdom
Plant cell
Cellulose cell membrane gift external to cell.
Vacuoles are typically giant.
Plastids present.
Golgi body gift within the type of units called dicotyosomes.
Centriole absent.
Ribosome is 80s (S- Swedenborg unit).
Animal cell
No cell membrane, out most structure is semipermeable membrane or semipermeable membrane.
Generally vacuoles are absent and if gift, are typically tiny.
Plastids are absent.
Golgi bodies to wall developed having a pair of cisternae.
Centriole gift.
Ribosome is 70s (S- Swedenborg unit).
It is very easy to understand
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