Transcript Cells: Prokaryote vs Eukaryote

Cells: Prokaryotes vs.
Eukaryotes
Cells have evolved two
different stuctures:
Prokaryote & Eukaryote
Prokaryotes
Bacteria
Eukaryotes
Animalss
Ex: E.coli and
Salmonella
Plants
Archaea
Protists
Ex: Red Algae
Fungi
Ex: Yeast and Mushrooms
Prokaryotes
Most are bacteria
VERY small!
Single-celled (unicellular)
NO nucleus (loose strands of DNA)
These are prokaryotic
E. coli bacteria on the
head of a steel pin.
Structures in Prokaryotic cells
cell membrane: surrounds
the cell
cytoplasm: inner liquid filling
DNA in one big loop
Flagellum: helps cell move
ribosomes: for building
proteins
All of these structures found
NO NUCLEUS!
in eukaryotes too!
Prokaryote Energy
Different types of Prokaryotes get energy
different ways
Photosynthesis (Autotrophic)
Pathogenic – feed on living things
The kind that make you sick!
Decomposers – feed on dead things
Eukaryotes
Have organelles
Larger and more
complex
Have a nucleus (where
DNA is kept!)
multicellular (more than
one cell) or unicellular
Include animal and plant
cells
Eukaryotes have Organelles
ORGANELLE – membrane-bound cell part
Mini “organs” that each have a special job to
do
Located in cytoplasm
Two Main Types of Eukaryotes
Animal Cell
Plant Cell
All eukaryotes keep their
DNA in a nucleus
Eukaryotic Cell Specialization
The whole cell can be specialized for
one job – this is how we can form
multicellular organisms!
Ex: Sperm Cells specialized to
deliver DNA to egg cell
Ex: Red blood cells - specially
designed to carry oxygen
throughout the body
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