Cell Types and Cell Theory Guided Notes

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​There are two types of cells:

• Prokaryotes

• Eukaryotes​

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​Prokaryotes

• ​Prokaryotic means " before nucleus" in Greek.

• ​Do NOT have a nucleus.

• Circular DNA that floats freely in the cell.

• No membrane bound organelles.

• Typically smaller than eukaryotic cells.

• Unicellular, meaning one cell.

• Aerobic or anaerobic, meaning some can live without oxygen.

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​Eukaryotes

• ​Eukaryotic means " true nucleus" in Greek.

• ​Have a nucleus.

• Have membrane bound organelles.

• Typically much larger than prokaryotic cells.

• Multicellular, meaning more than one cell,

  but can be unicellular.

• Aerobic meaning most need oxygen to survive.

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​Eukaryotes

• ​Eukaryotic means " true nucleus" in Greek.

• ​Have a nucleus.

• Have membrane bound organelles.

• Typically much larger than prokaryotic cells.

• Multicellular, meaning more than one cell.

• Aerobic meaning most need oxygen to survive.

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​PROKARYOTIC	​CELLS	​EUKARYOTIC	​CELLS
​Cell Type	​unicellular	​multicellular or unicellular	​Cell Type
​Size of Cells	​1-10 micrometers	​100-1000 micrometers	​Size of Cells
​Nucleus	​no nucleus	​membrane bound	​Nucleus
​DNA Structure	​circular	​double helix	​DNA Structure
​DNA Location	​floating in the cytoplasm	​inside nucleus	​DNA Location
​Reproduction	​asexual	​sexual or asexual	​Reproduction