Bacteria from domain arachea differ from bacteria from domain monera based on what
1. Cell walls contain peptidoglycan
2. Plasma membrane contains glycerol linked to fatty acids
3. A different sequence of bases in the rRNA
4. Their occurrence in artic environments
The correct answer would be:
3. A different sequence of bases in the rRNA
Bacteria from the domain Archaea differ from bacteria from the domain Monera in terms of their rRNA sequence. Archaea possess rRNA sequences that are distinct from those found in Monera. However, this difference does not apply to all bacteria in the domain Monera, as some bacteria within this domain do not possess peptidoglycan in their cell walls (option 1) and have plasma membranes containing glycerol linked to fatty acids (option 2). Additionally, the occurrence of bacteria from the domain Archaea in Arctic environments (option 4) is not exclusive to them, as bacteria from the domain Monera can also be found in such environments.
The main difference between bacteria from the domain Archea and bacteria from the domain Monera is based on the following:
1. Cell walls contain peptidoglycan: Bacteria from the domain Monera generally have cell walls that contain peptidoglycan, which is a polymer composed of sugars and amino acids. In contrast, bacteria from the domain Archea have cell walls that lack or have very minimal amounts of peptidoglycan.
2. Plasma membrane contains glycerol linked to fatty acids: The plasma membranes of bacteria from the domain Monera have a structure known as ester linkages, in which the glycerol molecule is linked to fatty acids. On the other hand, bacteria from the domain Archea have plasma membranes with ether linkages, in which the glycerol molecule is linked to hydrocarbon chains via an ether bond.
3. A different sequence of bases in the rRNA: Bacteria from the domains Archea and Monera have different sequences of bases in their ribosomal RNA (rRNA). This distinction in rRNA sequences is used in genetic analysis to differentiate between these two groups of bacteria.
4. Their occurrence in arctic environments: Although not an inherent characteristic, it is often observed that bacteria from the domain Archea are more common in extreme environments such as Arctic environments. They are well-adapted to thrive in harsh conditions like high salinity, temperature extremes, and acidic or alkaline environments. Bacteria from the domain Monera, on the other hand, can be found in a wide range of environments including arctic environments, but they are not specifically associated with extreme conditions like Archea.