| Eukaryotes have a much more complex cell structure than prokaryotes. |
| Understandings: |
Nature of science: |
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Prokaryotes have a simple cell structure without compartmentalization.
Eukaryotes have a compartmentalized cell structure.
Electron microscopes have a much higher resolution than light microscopes.
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Developments in scientific research follow improvements in apparatus—the invention of electron microscopes led to greater understanding of cell structure. (1.8) |
| Applications : |
Guidance: |
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Structure and function of organelles within exocrine gland of the pancreas and within palisade mesophyll cells of the leaf.
Prokaryotes divide by binary fission.
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Drawings of prokaryotic cells should show the cell wall, pili and flagella, and plasma membrane enclosing cytoplasm that contains 70S ribosomes and a nucleoid with naked DNA.
Drawings of eukaryotic cells should show a plasma membrane enclosing cytoplasm that contains 80S ribosomes and a nucleus, mitochondria and other membrane-bound organelles are present in the cytoplasm.
Some eukaryotic cells have a cell wall.
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| Skill: |
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Drawing of the ultrastructure of prokaryotic cells based on electron micrographs.
Drawing of the ultrastructure of eukaryotic cells based on electron micrographs.
Interpretation of electron micrographs to identify organelles and deduce the function of specialized cells.
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