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Discovering Cells
WITHMICROSCOPES
What are Cells?
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
CALCULATINGMAGNIFICATION
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