Question

How are archaeans most similar to bacteria? See Concept 27.4 (Page 584)

View Available Hint(s)

the occurrence of introns in their chromosomes
nucleotide sequence of small subunit ribosomal RNA
the shape of their chromosomes and plasmids
the structure of their cell walls
methanogenesis

Answer 1

Archaea and bacteria have similarities, such as being unicellular prokaryotes, but they also have distinct differences in their cell walls, plasma membranes, and ribosomal proteins.

Step-by-step explanation:

Archaea and bacteria share some similarities, but also have distinct differences:

1. Cell walls: Bacteria have cell walls made of peptidoglycan, while most archaea do not have peptidoglycan in their cell walls.
2. Plasma membranes: The lipids in archaea's plasma membranes are different from those in bacteria.
3. Ribosomal proteins: Archaea have ribosomal proteins similar to those found in eukaryotes, rather than those found in bacteria.

Despite these differences, both archaea and bacteria are unicellular prokaryotic organisms that can be found in various habitats.