Introductino to Cell Biology

Question 1

light microscope
who when

Answer 1

invented 1590
hans lippershey filed patent
hans and zacharias (father son team)
robert hooke viewed slides of tree bark

Question 2

beginnings of cell theory

Answer 2

1833 robert brown noticed every plant had kernel aka nucleus
1838 matthias schleiden -plant tissue composed of cells, embryonic plant always arose from single cell
theodor schwann - similar observations in animal cell

Question 3

cell theory

Answer 3

1. all organisms consist of one or more cells
2. the cell is the basic unit of structure for all organisms
3. all cells arise from only pre-existing cells (20 years later)