Download Three Domains of Life Table of Comparison Visualizing Cell

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Three Domains of Life Table of Comparison
Characteristic
Bacteria
Archaea
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Eucarya
Habitat
some tolerate heat extremes of heat,
or decay conditions pressure, saltiness,
decay
intolerant of
extreme heat
and saltiness,
few tolerate
harsh conditions
DNA
small loop
small loop
Membrane-bound nucleus
Absent
Absent
very large
molecules
bundled in
chromosomes
Present
Organelles
Absent
Absent
Present
Cell Wall
of peptidoglycan
unique, not made
of peptidoglycan
Membrane lipids
Ester-linked
Ether-linked
where present, made
of cellulose and
other unique
materials
Ester-linked
Ribosomes
70S
70S
Initiator tRNA
Formyl-methionine Methionine
80S (70S in organelles)
Methionine
Protein synthesis sensitive
to diptheria toxin
No
Yes
Yes
One-type
(4 subunits)
Several types
(8-12 subunits)
3 types
(12-14 subunits)
Sensitivity to chloramphenicol, streptomycin, kanamycin
Yes
No
No
Methanogenesis (metabolism
that generates methane)
No
Yes
No
Nitrogen fixation
Yes
Yes
No
Chlorophyll-based
photosynthesis
Yes
No
Yes
RNA polymerases
Visualizing Cell Processes
(rd Edition) © BioMEDIA ASSOCIATES
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