1. Chapter 7 Cellular Structure and Function
Section 1
Pages

2. What do you know about Cells?

3. No one even new about cells until the microscope was invented!!
Cells are tiny!
No one even new about cells until the microscope was invented!!

4. Section 7.1: Cell Discovery and Theory
1665 – Robert Hooke (U.K.)
Made a simple microscope and used it to observe cork.
He saw small box-like structures and called them cellulae (Latin for small rooms).
It is from Hooke’s work that we have the term cell.

5. Famous Old Guy
1. Robert Hook- coined the term “cell” after looking at cork

6. A cell is the basic structural and functional unit of all living organisms.
Not that kind of cell!!

7. History of the Cell Theory
1683 – Anton van Leeuwenhoek (Dutch)
Designed his own microscope after reviewing Hooke’s work.
Observed single-celled organisms in pond water, milk, and other substances.

8. Famous Old Guy
1. Robert Hook- observed and documented the first cell 2. Anton van Leeuwenhoek-invented first microscope discovered “animal like” unicellular organisms.

9. Quick Check First person to see a cell?
Person who invented Microscope?

10. The History Continues…
1838 – Scientist discovers plants are made of cells.
1839 – Scientist discovers that animal tissue also consists of individual cells.
1855 – Scientist proposes that all cells are produced from the division of existing cells.

11. The Cell Theory – includes three principles:
1. All living organisms are composed of one or more cells.
2. Cells are the basic unit of structure and organization of all living organisms.
3. Cells arise only from previously existing cells, with parent cells passing copies of their genetic material on to their daughter cells.
OMG THAT’S TOO MUCH TO WRITE!

12. the-wacky-history-of-cell-theory
Shorter please!
Cell Theory 1. Organism= 1 or more cells 2. Cells are the basic unit of life 3. Cells come from other cells
the-wacky-history-of-cell-theory

13. Microscope Technology
Developments in microscope technology have given scientists the ability to study cells in great detail.

14. Microscope Summery
1. Compound Light Microscope-Uses light 2. Electron Microscope- uses electrons and magnets

15. So now using the microscope we can see all kinds of different cells!

16. Cells are different from one another just like people are
Cells are different from one another just like people are. Cells differ based on the function they serve.

17. Cells differ in many ways however They all have
Plasma Membrane
Genetic Material
Cytoplasm
Ribosomes

18. All cells have Genetic Material information that directs the cell in its function.
Ex: DNA or RNA

19. Two Main Types of Cells Prokaryotic Cells PRO=NO!! 2.Eukaryotic Cells
pro = before
kary = nucleus
PRO=NO!!
2.Eukaryotic Cells
eu = true
kary = nucleus)

20. Prokaryotic Cells NO membrane bound organelles.
Most unicellular organisms (bacteria) are prokaryotes.

21. Eukaryotic Cells Bigger than prokaryotic cells Contains organelles
Has Nucleus

22. Organelles
Organelles are specialized structures that carry out specific functions.
Yes your going to need to know all the organelles but that’s for another day!!

23. Prokaryotic Vs. Eukaryotic
Prokaryotic cells are much simpler in structure compared to eukaryotes.
Scientists believe eukaryotic cells evolved from prokaryotic cells and that prokaryotes were probably the first form of life on Earth.
This is known as the endosymbiont theory

24. Review What's the Two Main types of Cells? Name one similarity.
Name one difference.
State the 3 parts of the cell theory.

25. 7.1 Activity Make a Venn diagram of Prokaryotic and Eukaryotic cells.
Answer the questions on the Back.
If its not done its Homework.