The common characteristics of Archaebacteria known to date are these: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls, with in many cases, replacement by a largely proteinaceous coat; (3) the occurrence of ether linked lipids built from phytanyl chains and (4) in …

Bacteria, being single-celled prokaryotic organisms, do not have a male or female version. Bacteria reproduce asexually. In asexual reproduction, the “parent” produces a genetically identical copy of itself.

As the evolutionary story is usually told, first came the prokaryotes: the archaea and bacteria, which are often envisioned as simple bags of enzymes without an intricate structure.

Bacteria that grow only in the absence of oxygen, such as Clostridium, Bacteroides, and the methane-producing archaea (methanogens), are called obligate anaerobes because their energy-generating metabolic processes are not coupled with the consumption of oxygen.

A possible answer is: Bacteria contain peptidoglycan in the cell wall; archaea do not. The cell membrane in bacteria is a lipid bilayer; in archaea, it can be a lipid bilayer or a monolayer. Bacteria contain fatty acids on the cell membrane, whereas archaea contain phytanyl.

Bacterial cell walls are composed of peptidoglycan, a complex of protein and sugars, while archaeal cell walls are composed of polysaccharides (sugars). The composition of their cell walls also differs from the eukaryotic cell walls found in plants (cellulose) or fungi and insects (chitin).

Archaea: cells do not contain a nucleus; they have a different cell wall from bacteria. Eukarya: cells do contain a nucleus.

The three-domain system is a biological classification introduced by Carl Woese et al. in 1990 that divides cellular life forms into archaea, bacteria, and eukaryote domains. The key difference from earlier classifications is the splitting of archaea from bacteria.

There are three domains of life: Bacteria (also known as Eubacteria), Archaea, and Eukarya. The Bacteria and Archaea are made up entirely of microorganisms; the Eukarya contains plants, animals, and microorganisms such as fungi and protists.

Eukarya is the only domain that consists of multicellular and visible organisms, like people, animals, plants and trees. It’s also the domain of many microorganisms, like fungi, algae and micro-animals.

Are you familiar with the five kingdoms of living things?

• Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.
• Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.
• Living things are divided into five kingdoms: animal, plant, fungi, protist and monera.

Herbert F. Copeland