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