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DesLee26
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Cell type
prokaryotic v. eukaryotic
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organism type
- p: unicellular, colonial, filamentous, some multicellular (bacteria)
- e: unicellular, colonial, filamentous, most multicellular (plants, fungi, animals, algae)
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avg. cell size
- p: smaller 1-10 um
- e: mostly larger (10-100 um)
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respiration
- p: aerobic, anaerobic, switch hitters
- e: aerobic, a few anaerobic
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ECM
- p: exctracellular capsule or slime layer
- e: present around many animal cells, composed of oligosaccharides and glycoproteins; around plant cells composed of pectic compounds
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Cell wall
- p: usually present (absent in mycoplasmas)
- e: present in plant and funcgal cells; most algae (absent in animal cells)
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sub-cell organelles
- p: mainly absent, except for ribosomes
- e: present
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flagella
- p: present or absent: tw types of proteins
- e: present or absent; complex; composed of multiple microtubles and many other proteins
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genetic system:
- p: DNA present, not associated with protein
- nucleouid not membrane- bound (no nucleus)
- one main molecule of DNA
- there may be smaller pieces of DNA
- e: DNA presnt, complexed with proteins in true chromosomes
- membrane-bound nucleus
- usually at least two DNA molecules
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cell division
- p: binary fission
- e: mitosis
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sexual system
- p: unidirectional transfer of DNA fragments from donor to recipient, if present; no complete cell fusion; no meiosis
- e: common; involves complete nuclear fusion of gametes containing equal number of chromosomes; involves meiosis
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