cell : the basic unit of life Flashcards
What is a cell ?
unicellular organisms are capable of independent existence , performing specific functions .
anything less than a cell doesn’t ensure independent living
cell is basic unit of life .
who saw 1st live cell
Anton von Leeuwenhoek
who discovered nucleus
Robert brown
what is cell theory ?
1838 , Matthias schleiden , a German botanist examined all plants are made up of diff kind of cells which later make tissues .
about same time , Theodor schwaan British zoologist , reported about the presence of plasma membrane and unique feature of cell wall in plants .
acc to them animals and plants are made up of cell and their products .
who was Rudolf Virchow and what was his contribution ?
IN 1855 , as it was yet not known about how cells are formed so he helped modify the cell theory and told new cells are formed from pre existing ones I.e. OMNIS CELLULA -E CELLULA .
