1. Characteristics of Life
A study of the cell
And its structures

2. Characteristics of Life
Organization- cells as basic unit
Metabolic activity
use and acquire energy
Reproduction
asexual
sexual
Homeostasis: day to day survival

3. Characteristics of Life con’t.
Growth and development
Responds to environment
Reaction to the environment
Change through time (evolution)
1- genetic variation
2- natural selection
3- adaptation

4. Cell Theory- origins Robert Hooke’s discovery Cork cells
Only looked at dead cells
The microscope (intro)
Van Leeuwenhoek
Two types
Simple
Compound
Schleiden- plants are made of cells
Schwann- animals are made of cells also

5. Cell Theory 1- Cells are the basic unit of life Structure Function
2- All living organisms are made of cells
3- All cells come from pre-existing cells

6. Two Cell types Prokaryotes and Eukaryotes Both have cell coverings
a. cell wall and/or
b. plasma membrane
Cytoplasm
Simple organelles
For example ribosomes
Metabolic comparisons
Genetic material: DNA (rarely RNA)

7. Prokaryotes primitive, “before; nucleus” 1- Example 2- Basic structure
3- Type of reproduction

8. Eukaryotes advanced, “true; nucleus” 1- Example 2- Basic structure
3- Type of reproduction
4- Animal vs Plant cells

9. Prokaryote vs Eukaryote

10. Viruses
Alive or not?
Lytic cycle
Latent cycle