Cell Theory
• Is a fundamental concept of biology.
• It states:
– All living things are composed of cells.
– Cells are the basic units of structure and function in
living things.
– New cells are produced from existing cells
Eukaryotic vs. Prokaryotic Cells
http://dsc.discovery.com/tvshows/other-shows/videos/assignmentdiscovery-shorts-eukaryoteprokaryotes.htm
Eukaryotic cell types
• Can be found in …
1. Animals
Eukaryotic cell types
• Can be found in …
2. Plants
Eukaryotic cell types
• Can be found in …
3. Fungi
Eukaryotic cell types
• Can be found in …
4. Protists - unicellular organisms ( ONE CELL)
Prokaryotic Cells
• Can be found in..
1. Bacteria
Prokaryotic Cells
• Can be found in..
2. Archaebacteria – bacteria that can be found
in extreme environments. Genetically different
from bacteria.
Differences
Prokaryotic Cells
• No Nucleus: DNA is free
floating in the cell.
• Small and simple organisms.
Eukaryotic Cells
• Have a true nucleus and
membrane bound
organelles.
• Are larger and more
complex than prokaryotes
Similarities
Prokaryotic Cells and Eukaryotic Cells
•
•
•
•
•
Cell membrane
DNA
Cytoplasm
Ribosomes
Both meet ALL 8
characteristics of life