Download Endosymbiotic Theory for the Evolution of Eukaryotic Cells

Endosymbiotic Theory for the Evolution of Eukaryotic Cells
The theory that eukaryotic cells arose from a symbiotic
relationship formed when a _____________________________
________________________________. A mutually beneficial
relationship evolved into membrane-bound organelles.
Endo = in Symbiosis= a close relationship between species
Supporting Evidence
 Mitochondria and chloroplasts ____________
______________, which is a circular chromosome
similar to prokaryotic cell chromosomes.
 Mitochondria have their own ribosomes which are
similar to prokaryotic ribosomes.
 Mitochondria and chloroplasts can divide on their
own.
Supporting Evidence Cont.
Mitochondria and chloroplasts are surrounded
by a __________________________ (as would
be a cell engulfed by another cell.)
Mitochondria and chloroplasts are the same size
as a typical prokaryotic cell.
Video: Endosymbiotic Theory
http://www.youtube.com/watch?v=umKAkEr_HLI
Review with your table partner:
Discuss with your partner anything you have
already learned about how viruses compare to
cells.
Virus
• _______________ •
____________
• Protein Coat
•
• Does NOT contain •
ribosomes
•
Bacterium
(Prokaryotic Cell)
Eukaryotic Cell
DNA (not separated • DNA is in nucleus
• Membrane-bound
from cell)
organelles with
Cell Membrane
enzymes for each
Ribosomes
task organized
Enzymes
• _______________ • Can produce
_______________
proteins
_______________ • Can produce ATP
• Can NOT produce
from an energy
ATP (utilize energy)
source
• More efficient
• Can be 10-100 x
bigger than a
bacterium
Viruses must ____________________________.
Relative Sizes of Cells, Organelles, Viruses, Molecules
and Atoms:
http://learn.genetics.utah.edu/content/begin/cells/scale/
Unicellular:
An organism made of only one cell.
Example: Diatom
Multicellular:
An organisms made of many cells.
The average human has approximately 100
trillion cells.
Levels of Organization
Tissue: A group of __________ cells that
work together.
Example: Muscle tissue
Organ: A group of __________ types of cells
that work together for a specific function.
Example: The heart
Organ System: A group of organs that work
together.
Example: The circulatory system