Without them…you’re nothing but dirt.
Well okay…maybe not even that.
Perhaps you’re really just a bunch of cheap chemicals
…..Who knows...


There are basically 6 things that Scientist define as required for life.

1) Living things are organized.
• All living things are made of cells
– The basic unit of structure and function in an organism
• May be Unicellular - Single celled organism.
• May be Multicellular - Organism composed of many cells.


2) Living things must acquire and use energy.
• Ya got’ta eat, or at least soak in the sun.

3) Living things respond to stimuli.
• Plants bend toward light.
• Worms recoil from touch.
• Dogs bark when startled.
• You feel unbridled horror at the sight of a science test.


4) Living things reproduce.
• What good is it if you can’t make more?….

5) Living things grow and develop and adapt.
• Nothing starts out and adult. Nothing is what it has always been.
– Darwin

6) Maintain internal conditions separated from an outside environment.
• Homeostasis.
• Kind of loops back to the first point.

For something completely different


The Modern Cell Theory consists of three statements based on a large body of scientific research.

All living things are composed of cells.

All cells come from pre-existing cells.

The cell is the fundamental unit of structure and function in living things.

The Cell Theory

The Modern Cell Theory is derived from the work done by Hooke, Leeuwenhoek,
Schleiden, Schwan, Virchow and a few others

Who are these people?

 I’ve written 5 new DAR’s for these scientist.

Hooke, Leeuwenhoek, Schleiden, Schwan,
Virchow
 Go ahead….make my day.
 But anyway………………….

The Cell Theory

What then new found technology catapulted these scientist into the stratosphere of leading edge science?
– CD

The Microscope

A microscope makes small objects look larger

A compound microscope has more than one lens

The Microscope!
http://science.howstuffworks.com/light-microscope5.htm

The Microscope!

Important Parts.

Objective lens - gathers light from the specimen

Eyepiece (ocular lens)- transmits and magnifies the image from the objective lens to your eye

Coarse-focus knob - used to bring the object into the focal plane of the objective lens

Fine-focus knob - used to make fine adjustments to focus the image

The Microscope!

Determining Total Magnification :

Locate the numbers on the eyepiece and the low power objective

Eyepiece magnification x Objective magnification =Total Magnification

For high power objective.

Eyepiece magnification x Objective magnification =Total Magnification

The Microscope!
http://science.howstuffworks.com/light-microscope5.htm

The Microscope

A bit of history

Robert Hooke in 1663 using a microscope he built himself was one of the first people to observe cells.
• He called them cells because they reminded him of tiny rooms.

Anton van Leeuwenhoek who at about the same time built his own microscope and was the first to observe
“animalcules” meaning “little animals.” in pond water.

The Microscope
1660 Hooke’s compound microscope
1886 Modern compound light microscope
1000x
1965 Scanning
Electron microscope
150,000x in 3D
1590 First compound microscope
1683
Leeuwenhoek’s microscope
266x
1933
Transmission
Electron microscope
500,000x
1981 Scanning
Tunneling microscope
1,000,000x