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16 Cards in this Set
- Front
- Back
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TWO BASIC CELL TYPES
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(all living cells)
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Eukaryotic
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(“true nucleus”)
- more complex |
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Prokaryotic
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(“pre-nucleus”)
- simpler, smaller |
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EUKARYOTIC CELLS
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Possess a true “nucleus”
Nuclear material surrounded by a nuclear membrane. Nuclear material organized into paired chromosomes. Nuclear membrane (DNA) associated with proteins called histones - form the chromosomes. Nucleus contains nucleolus - sites of ribosome synthesis. |
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EUKARYOTIC CELLS
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Internal structure more complex - contains organelles - each have a specific function.
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EUKARYOTIC CELLS
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Cytoplasmic streaming - continuous movement of the cytoplasm.
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EUKARYOTIC CELLS
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Cell membranes contain complex lipids - sterols (cholesterol). Cell walls
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EUKARYOTIC CELLS
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Occur only on plant cells, fungi
Composed of cellulose, chitin. Division occurs by mitosis, meiosis. |
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PROKARYOTIC CELLS
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No “true” nucleus - nucleoid.
No nuclear membrane. No paired chromosomes No histones. No nucleolus. |
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PROKARYOTIC CELLS
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No organelles.
No cytoplasmic streaming. Cell membrane contains no sterols. |
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PROKARYOTIC CELLS
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All typical prokaryotic cells possess cell walls. Composed of peptidoglycan (murein).
Division - binary fission. |
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Microorganisms of each cell type :Eukaryotic
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fungi, protozoa, algae, worms
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Microorganisms of each cell type :Prokaryotic
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bacteria
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Microorganisms of each cell type :Viruses
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- neither - acellular
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TAXONOMY
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study of classification.
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Classification
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arranging organisms into related groups.
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