CELL BIOLOGY
EVOLUTION OF THE CELL
,• It is the biological science which deals with the study
structure, functions, molecular organisation, grow
reproduction and genetics of the cell.
• Classical cytology: deals with only light microscopic
visible structure of the cell
• Cell physiology: deals with biochemistry, biophysics a
function of the cell
• Cell biology: deals with molecules such as nucleic acids a
proteins
,• Aristotle and Paracelsus posited that “all animals and plants
matter how complicated constitute few elements which are repea
in each of them e.g. macroscopic structures of roots, leaves
flowers.
• De Vinci(1485): recommended the uses of lenses in viewing sm
objects. It was Conrad Gesner (1855) published the results of stud
on protist called foraminifera
• Growth and development of cell biology led to the developmen
compound microscope
, • First compound microscope was invented by Francis Janssen
Zacharias Janssen (1590). “flea glasses”
• In 1610 Galileo Galilei (1564-1642) invented a simple microsc
having only one magnifying lens. Used to examine the arrangeme
of facets in the compound eye of insects
• Marcelo Malpighi (1628-1694) was the first to use microscope
describe thin animal tissues from organs of the brain, liver, kidn
spleen, lungs and tongue.
• Robert Hooke(1635-1703) was credited with the term “ CELL”
examined a thin slice cut from dried cork under compo
microscope. The crude microscopes did not permit the observatio
intracellular structure.
EVOLUTION OF THE CELL
,• It is the biological science which deals with the study
structure, functions, molecular organisation, grow
reproduction and genetics of the cell.
• Classical cytology: deals with only light microscopic
visible structure of the cell
• Cell physiology: deals with biochemistry, biophysics a
function of the cell
• Cell biology: deals with molecules such as nucleic acids a
proteins
,• Aristotle and Paracelsus posited that “all animals and plants
matter how complicated constitute few elements which are repea
in each of them e.g. macroscopic structures of roots, leaves
flowers.
• De Vinci(1485): recommended the uses of lenses in viewing sm
objects. It was Conrad Gesner (1855) published the results of stud
on protist called foraminifera
• Growth and development of cell biology led to the developmen
compound microscope
, • First compound microscope was invented by Francis Janssen
Zacharias Janssen (1590). “flea glasses”
• In 1610 Galileo Galilei (1564-1642) invented a simple microsc
having only one magnifying lens. Used to examine the arrangeme
of facets in the compound eye of insects
• Marcelo Malpighi (1628-1694) was the first to use microscope
describe thin animal tissues from organs of the brain, liver, kidn
spleen, lungs and tongue.
• Robert Hooke(1635-1703) was credited with the term “ CELL”
examined a thin slice cut from dried cork under compo
microscope. The crude microscopes did not permit the observatio
intracellular structure.
