2. The Cell Theory
1. All organisms are made of cells.
2. The cell is the basic unit of life in all
living things.
3. All cells come from existing cells.
THIS IS IMPORTANT BECAUSE IT SHOWS THAT
ALL LIVING THINGS SHARE A SIMILAR
STRUCTURE
3. Two Types of Cells
All cells, whether they are prokaryotic or eukaryotic, have
some common features
13. Endoplasmic Reticulum
• Transportation
system of cell
• Rough ER-
ribosomes
attached
• Smooth ER- no
ribosomes-
function in
synthesis of lipids
and phospholipids
Ribosomes
Endoplasmic Reticulum
“Roadways of the cell”
14. Golgi Complex
• Function in
storage,
modification, and
packaging of
polypeptide and
protein products
• Expel secretory
products outside
the cell
17. Mitochondria
• Power houses of
cell
• Enzymes on the
cristae catalyze
the energy-
yielding steps of
aerobic
metabolism
Outer Membrane
Inner Membrane
With fingler-like projections called cristae
18. Cell Wall
• Found only in
plant cells
• Protects and
supports the cell
