Download Prokaryotic Eukaryotic

Parts of the Prokaryotic Cell
Check your Understanding
1) What is the main difference between a
prokaryotic and eukaryotic cell?
2) What are the parts of a nucleus and
where are they located?
3) What types of organisms have prokaryotic
and eukaryotic cells?
4) What are the parts of a prokaryotic cell
and what are their functions?
Review
• What is the main difference between a
prokaryotic and eukaryotic cell?
• What types of organisms have prokaryotic
cells?
• What types of organisms have eukaryotic
cells?
Main Difference?
• Yeah, that’s right…the nucleus!
Eukaryotic (“true kernel”) = true nucleus
Prokaryotic (“before kernel”) = before
nucleus
orrrrr…. Pro = no
Parts of the Nucleus
• Nuclear envelope: 2 membranes surrounding
the nucleus
• Nuclear pores: holes in the envelope that allow
substances in and out
• Nucleoplasm: “cytoplasm of the nucleus”; this is
where DNA is found
• Nucleolus: small region inside the nucleus
where ribosomes are made
So if prokaryotes don’t have a
nucleus, where is their DNA?
• Prokaryotic DNA is
found in a region of the
cytoplasm called the
“nucleoid region”
• Not coiled into linear (Xshaped) chromosomes;
unwound in a circular
structure
Parts of the Prokaryotic Cell
•
•
•
•
•
Cell Wall
Cell Membrane
Ribosomes
Cytoplasm
Nucleoid Region
+ DNA
• Flagellum
Cell Organelles that are NOT
Found in Prokaryotes
• Anything with a
membrane around
it! (AKA membranebound organelles)
• Ex: ER, Golgi,
vacuoles,
mitochondria,
chloroplasts
Prokaryotic vs. Eukaryotic Organisms
Prokaryotic
Eukaryotic
Mostly unicellular (one
cell) organisms
Mostly multicellular (many
cells) organisms
Examples: bacteria
Examples: animals,
plants, fungi, protists
So What’s a “Protist”?
• A unicellular (one-celled) eukaryote
• Examples: Amoeba, Paramecium,
Euglena
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