Discovering Cells WITH MICROSCOPES

What are Cells?

 The microscopic parts that form all organisms and carry out all of the organisms functions

VIP’s in the cell world  Robert Hooke  Leeuwenhoek  First to observe cells in cork  First to make a simple microscope with 1 lens  Observed one- celled organisms in pond water

VIP’s in the Cell world  Zacharias Janssen

VIP’s in the Cell world  Zacharias Janssen  Invented the compound microscope

VIP’s in the Cell world  Zacharias Janssen  Schleiden, Schwann, & Virchow  Invented the compound microscope

VIP’s in the Cell world  Zacharias Janssen  Schleiden, Schwann, & Virchow  Invented the compound microscope  Came up with the Cell Theory

What is the Cell Theory?  All living things are made up of cells  Cells are the basic units of structure and function of all living things  All cells are made from other cells

MICROSCOPES  What is a microscope?

MICROSCOPES  What is a microscope?  Instrument that makes small objects look larger

MICROSCOPES  What is a microscope?  How do microscopes make objects look larger?  Instrument that makes small objects look larger

MICROSCOPES  What is a microscope?  How do microscopes make objects look larger?  Instrument that makes small objects look larger  Uses lenses to magnify the object

TYPES OF MICROSCOPES  SIMPLE One lens

TYPES OF MICROSCOPES  COMPOUND TWO lenses

TYPES OF MICROSCOPES  LIGHT: Magnification= makes object bigger Resolution= makes object clearer  ELECTRON: Uses electrons to magnify objects

CALCULATING MAGNIFICATION  TOTAL MAGNIFICATION= ocular power x objective lens power Ocular power is generally 10X, meaning it has a magnification or power of 10X Objective power depends on which lens you are using= 4X, 10X, or 40X

ELODEA ELODEA ELODEA 40X 100X 400X