1. Day 1: Cells

2. Write each of the words below on your new do first sheet
Write each of the words below on your new do first sheet. Then write “alive” or “not alive.” You do not need complete sentences.
Plant air wind
animals
bacteria
viruses protists
rocks fungi soil
fire water

3. Are these things alive? Plant air wind animals bacteria
viruses protists
rocks fungi soil
fire water
Living
Living
Living
Living
Living

4. Notes: Living vs. Non-Living

5. Ex. of Life and Nonlife:
Living Things: plants, animals, protists, fungi, bacteria
Nonliving Things: viruses, fire, rocks, soil, air, water, sunlight
This is a picture of Mycobacterium tuberculosis a bacteria which causes the disease tuberculosis. What happens when you get this disease?

6. I. KEY CONCEPT
Cells are the basic unit of life. They are the smallest unit able to perform the basic functions of life. (Basically the SMALLEST LIVING THINGS)

7. 7 Characteristics of Living Things
Movement
Growth & Development
Sensitivity
Reproduction
Use of Energy
Made of Cells
Eliminate Waste

8. Notes: Cell Theory & Microscopes

9. Who was involved? (Two of these dudes are our scientists of the week!)
The cell theory grew from the work and research of many scientists.

10. What did they use? (It’s all about the technology!)
More was learned about cells as microscopes improved over the years

11. History of Cells and Microscopes
In the 1600’s compound light microscopes were invented. These microscopes use a series of lenses to magnify objects.
(Magnify means to make objects look bigger.)
After the invention of the microscope, scientists began to look at cells under the microscope.

12. Microscopes Compound light microscope used today.
Original Microscope from 1600’s
Compound light microscope used today.

13. Robert Hooke Used light microscopes to look at plant tissue
Noticed that a piece of dead cork had tiny chambers
Called them cells because they looked like the cells of a monastery
Hooke's Microscope 
Hooke's drawing of Cork Cells

14. Anton van Leeuwenhoek (LAY-vuhn-hook)
One of first people to use a microscope to study living things from nature
Able to see things that no one had seen before
First person to see the tiny organisms living in pond water

15. Growth Mindset Quote of the Week
"Whenever I found out anything remarkable, I have thought it my duty to put down my discovery on paper, so that all ingenious people might be informed thereof." Antonie van Leeuwenhoek

16. Principal # 1 All organisms are made of one or more cells.
Some organisms are made up of one cell
Others are multicellular or made up of many cells

17. Principal # 2
The cell is the most basic unit of life.

18. Principal # 3
All existing cells are produced by other living cells.

19. These scientists’ studies led to the development of the cell theory!
A theory is a well tested hypothesis that can explain a broad range of observations
The cell theory applies to all living things BIG and small and has three main principals
Cells can provide a lot of information about living things

20. The Wacky History of Cell Theory

21. Other important Scientists
C. Matthias Schleiden (SHLY-dun)
All plants are made of cells
D. Theodor Schwann
All animals are made of cells
E. Rudolf Virchow
Looked at how cells reproduce
Cells come from cells that already exist

22. History of Cells and Microscopes
-In the 1930’s electron light microscopes were invented which allowed scientists to look at even smaller objects, such as organelles.

23. II. Cell Theory Summary
-In the 1830’s something called the “Cell Theory” became a popular way of describing life in terms of cells.
-The cell theory is made up of three main ideas:
1. All organisms are composed of one or more cells. An organism may be made up of one cell, such as bacteria, or may be multicellular, that is have many cells, such as plants and animals.
2. The cell is the basic unit of structure and organization or organisms. Although organisms such as humans, dogs and trees can become very large and complex, the cell remains the simplest, most basic part of an organism.
3. All cells come from preexisting cells. This means that a cell comes from a parent cell (one parent cell divides to become two daughter cells).