Chapter 7 . A View of the cell. Objectives Relate advances in microscope technology to discoveries about cells and cell structure. Compare the operation of a compound light microscope with that of an electron microscope Identify the main ideas of the cell theory. . The Discovery of cells.
With microscopes, scientist were able to identify microorganisms which are made up of Cells!!!!
Cells are the basic units of living organismsHistory of the cell theory
Robert Hooke- (English Scientist) by using a compound light microscope, looked and observe dead bark and notice shapes in the bark.
Theodor Schwann- ( German Scientist) looked at animals and saw the same shapes as Hooke.
Therefore the cell theory was made.The cell theory
Electron microscope uses a beam of electrons instead of light to magnify structures up to 500,000 times their actual size.
This allowed scientist to see structures inside the cell.Electron microscope
Organelles microscope. are membrane- bound structures with particular functions within cells.
Prokaryotic cells- are cells that do not contain any membrane-bound organelles. Example- bacteria
Eukaryotic cells- cells that contain membrane- bound organelles. examples- yeast, us!The cell types
Nucleus- central membrane bound organelle that manages or controls cellular functions.