Which is NOT a difference between bacteria and archaea? Group of answer choices Presence of peptidoglycan in cell walls Membrane lipid composition Ability to survive extreme environments Use of ribosomes for protein synthesis
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Bacteria typically have peptidoglycan in their cell walls, while archaea do not. Archaea have unique membrane lipid compositions that differ from bacteria. Show more…
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Bacteria and Archaea are different domains with many different structural and functional characteristics. For example, Bacterial and Archaeal plasma membranes consist of lipid bilayers, but the composition of Bacterial and Archaeal cell membranes is different from each other. For example, the Archaeal cell membrane has i) ether-linkage instead of ester-linkage, ii) branched-hydrocarbon chains instead of fatty acids, iii) mono-layer (sometimes) instead of bilayer, iv) sterol instead of hopanoid. a. Archaeal cell membrane has ether-linkage instead of ester-linkage. Is there any benefit for the "ether-linkage" for the Archaeal cell, instead of the ester-linkage? Answer Yes or No. Explain your answer. b. Archaeal gene expression is more likely in Eukaryotic cells. For example, the composition of ribosomes is similar to that of Eukaryotic cells. What is the Eukaryotic cell-like composition in Archaeal ribosomes?
Keemin L.
The most significant difference between archaea and bacteria is the: lack of a nuclear envelope in archaea. absence of the 70S ribosomes in bacteria. presence of a single filament flagellum in bacteria. absence of peptidoglycans in the cell walls of archaea. presence of fatty acids in the plasma membranes of archaea.
Haricharan G.
Archaea a. have cytoskeletons. $b$. have distinctive lipids in their plasma membranes. c. survive only at moderate temperatures and near neutrality. $d$. all produce methane. $e .$ have substantial amounts of peptidoglycan in their cell walls.
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