Standard 2.2
Compare and contrast, at the cellular level, the general structures and degrees of complexity of prokaryotes and eukaryotes.
Essential Questions
1. How are prokaryotic and eukaryotic cells the SAME and DIFFERENT?
2. How did eukaryotic cells evolve from prokaryotic cells?
Prokaryotic cells
Eubacteria and Archaebacteria
*very, very small cells
*contain no organelles with membranes
*NO NUCLEUS
*cells appear 3.5 billion years ago
*they are absolutely necessary for life on earth b/c they
RECYCLE organic material as DECOMPOSERS
*They HAVE a cell MEMBRANE and RIBOSOMES (for making protein)
Eukaryotic cells: Fungus, Animals, Plants, and Protists
*large, complex cells appearing 2 billion years ago
*all have a nucleus and other organelles
Eubacteria and Archaebacteria
*very, very small cells
*contain no organelles with membranes
*NO NUCLEUS
*cells appear 3.5 billion years ago
*they are absolutely necessary for life on earth b/c they
RECYCLE organic material as DECOMPOSERS
*They HAVE a cell MEMBRANE and RIBOSOMES (for making protein)
Eukaryotic cells: Fungus, Animals, Plants, and Protists
*large, complex cells appearing 2 billion years ago
*all have a nucleus and other organelles