1. CELLS

2. Cell Theory
The cell is the basic unit of Life. (Structure and Function).
All living things are made up of cells.
All cells come from Pre-existing cells.

3. Discovery of Cells Robert Hooke (mid-1600s) Observed sliver of cork
Saw “row of empty boxes”
Coined the term cell

4. Prokaryote VS. Eukaryote Cell
Both
Eukaryote
Small
DNA
Large
No membrane organelles
Ribosomes
Membrane bound organelles
No nucleus
Plasma membrane
Nucleus
Bacteria
Cytoplasm
Animal and Plants
Cell wall

6. Eukaryotes: Animal VS. Plant Cell
BOTH
Plant
Lysosomes
Nucleus
Cell Wall
Flagella
Golgi Apparatus
Central Vacuole
Centrioles (cell division)
Ribosomes
Chloroplast
Rough and Smooth ER
Plasma Membrane
Mitochondria

7. Animal Cell

8. Plant Cell

9. Organelles:

10. Plasma Membrane:

11. Structure of Membrane Made up of 2 layers of phospholipids
Head: Hydrophilic
Tails: Hydrophobic

12. Function of Membrane Protective barrier
Regulate transport in & out of cell (selectively permeable)
Allow cell recognition
Provide anchoring sites

13. Passive Transport: (NO ENERGY)
Diffusion: Substances move from High to Low concentration (amount)
Osmosis: Water moves from High to Low concentration (amount)
Facilitated Diffusion: Substances move from High to Low but with the aid of a protein (facilitated)
*ALL MOVE HIGH TO LOW

15. Active Transport: (ENERGY/ATP)
Moves from Low to High (against concentration gradient)
Phagocytosis: cell eating