1. Chapter 7 Cell Structure and Function
Section 7.1- Life is Cellular
Section 7.2- Eukaryotic Cell Structure
Section 7.3- Cell Boundaries
Section 7.4- Diversity of Cellular Life

2. Section 7.1- Life is Cellular
Discovery of Cells
Robert Hooke
Used light microscope to look at cork cells
Cells reminded him of monk cubicles
“many little boxes”
Called them CELLS

3. Section 7.1- Life is Cellular
Discovery of Cells
Anton van Leewenhoek
First to observe living cells
Invented simple, tiny microscopes

4. Section 7.1- Life is Cellular
The cell theory states that:
all living things are composed of one or more cells
cells are the basic units of structure and function in an organism
cells come only from the reproduction of existing cells

5. Section 7.1- Life is Cellular
Cellular Basis of Life
All living things
are made of organized parts
obtain energy from their surroundings
perform chemical reactions
change with time
respond to their environment
reproduce.

6. Section 7.1- Life is Cellular
Prokaryotes
Prokaryote cells lack a nucleus and membrane-bound organelles.
Have genetic material not contained in a nucleus

7. Section 7.1- Life is Cellular
Eukaryotes
Eukaryote cells have a nucleus and membrane-bound organelles