Cell Notes #1

1. Cell Notes #1 Cell Theory Prokaryote vs Eukaryote Bacteria/Plant/Animal/Virus

2. The Cell Theory Three Main Ideas • All organisms are composed of one or more cells. • The cell is the basic unit of organization of organisms. • All cells come from pre-existing cells

3. Two Cell Types Prokaryotic Cells– do not contain internal membrane-bound structures (Organelles) • Most unicellular organisms such as Bacteria are Prokaryotes. Eukaryotic Cells – contain internal membrane-bound structures. • All multi-cellular plants and animals are Eukaryotes

4. Two Cell Types

5. Prokaryotic Cells Characteristics • Simple cell • Small in size • No Nucleus • Has Nucleic Acids (DNA/RNA) • No Membrane bound Organelles • Examples: Bacteria, Yeast

6. Eukaryotic Cells Characteristics • Has DNA/RNA • Found in Multi-cellular organisms (Plants and Animals) • Has Nucleus • Complex Cell • Has membrane bound organelles

7. Eukaryotic Cells Animal and Plants

8. Virus • Cause Sickness or Death • Non-Living • Has Nucleic Acids (DNA/RNA) • Replicates ( Reproduces) by infecting living cells (host)

9. Cells vs Virus Bacteria Animal Plant Virus Prokaryote Cell Eukaryote Cell Eukaryote Cell Not a cell Living LivingLiving Non-Living Simple Complex Complex Simple No Nucleus NucleusNucleus No Nucleus Nucleic Acids Nucleic Acids Nucleic Acids Nucleic Acids Reproduces ReproducesReproduces Reproduces (with host) No Organelles OrganellesOrganelles No organelles