1. Ch. 7: The Structure & Function of Cells
Introduction to Cells

3. I. The Cell The basic unit of life
Bacteria are the simplest cells, with animal, plant, fungi, & protists cells being more complex

10. II) History Behind the Cell
1665 – Robert Hooke
Saw cork through one of the first microscopes
1674 – Anton van Leeuwenhoek
Observed tiny organisms in a drop of pond water
1833 – Robert Brown
Discovers the cell’s nucleus
1838 / 1839 – Theodore Schwann & Matthias Schleiden
All plants & animals are made of cells
1855 – Rudolph Virchow
All cells come from pre-existing cells

11. 1665 – Robert Hooke

12. 1674 – Anton van Leeuwenhoek

13. 1838 – Matthias Schleiden

14. 1839 – Theodore Schwann

15. 1855 – Rudolph Virchow

17. III. The Cell Theory A) Cells are the basic unit of life
B) All organisms are made of one or more cells
C) All cells arise from preexisting cells

19. IV. Diversity of Cellular Life
Unicellular Organisms
A single-celled organism
Dominate life on Earth based upon numbers

21. IV. Diversity of Cellular Life
Multicellular Organisms
Cell specialization
Cells throughout an organism develop in different ways & perform different tasks

23. IV. Diversity of Cellular Life
Level of Organization
Tissues
Similar cells that all perform a particular function
Animals have 4 types:
Muscle
Epithelial
Nervous
Connective

24. IV. Diversity of Cellular Life
Level of Organization
Organs
Many groups of tissues working together to perform a complicated task

26. IV. Diversity of Cellular Life
Level of Organization
Organ Systems
Group of organs that work together to perform a specific function