Difference Between Archaebacteria and Eubacteria

Difference Between Archaebacteria and Eubacteria

Archaebacteria and eubacteria are two separate kingdoms under the Monera family. Both are prokaryotes, which are single-celled microorganisms.

Archaebacteria Vs. Eubacteria

Eubacteria and archaebacteria are distinct because of their distinct environments and other traits. It is possible for Eubacteria to thrive in a wide range of habitats, including soil, water, and other creatures. Archaebacteria, on the other hand, thrive in harsh environments. Archaebacteria are distinct from eubacteria in many ways, including their cell membrane chemistry, gene transcription, and more.

True bacteria, or Eubacteria, are the unicellular prokaryotic microbes that may be found all over the planet. Since their nucleus is not attached to the membrane, they have a peptidoglycan-based cell wall. They are able to keep their form and size because of this structure. Eubacteria may be divided into three broad categories: facultative, pathogenic, and anaerobic. It’s impossible to generalize about them.

Unicellular prokaryotic microorganisms include archaebacteria, sometimes known as “ancient bacteria.” Most often, they are found at the depths of the ocean. They can survive in the most hostile of environments. A kind of bacteria known as archaebacteria is thought to have evolved from some of the earliest organisms ever discovered on the planet.

What does Eubacteria mean exactly?

The unicellular prokaryotic microorganisms are referred to as “real bacteria” or “eubacteria” for short. They may be found all over the planet. They may be found in soil, water, and even on other creatures, such as fungi and bacteria.

Eubacteria includes all bacteria, except for archaebacteria, which are not included. They lack a membrane-bound nucleus because they are prokaryotic. Cross-linked chains of peptidoglycans make up the majority of their cell wall. That structure aids them in maintaining their physical attributes.

In addition to the flagellum, which is a structure formed of proteins and utilized for movement, Eubacteria contain a broad variety of properties. In order to adhere to a surface or transmit DNA, certain bacteria develop pili, which are tiny projections on their bodies. Bacteria may even build biofilms that are very resistant to antimicrobial agents.

Eubacteria have the ability to produce spores in order to survive in hostile environments. Extreme environments, such as high and low temperatures, acidic, and basic conditions, etc., are no match for them because of this.

Asexual reproduction is possible in Eubacteria through binary fission and budding, respectively. Gram-positive, Gram-negative, and miscellaneous eubacteria are the three most common forms of eubacteria.

What is Archaebacteria, and how does it differ from other types of bacteria?

One-celled prokaryotic organisms are known as Archaebacteria. In the past, they were thought to be just another kind of bacterium. Archaebacteria, on the other hand, have been revealed to be quite distinct from the typical contemporary bacteria.

In terms of their genetic make-up and chemistry, archaebacteria are a diverse group. They’re called “archaebacteria” since they’re thought to be a current incarnation of ancient bacterial species discovered on the planet.

Extreme environmental circumstances, such as high or low temperatures, salty habitats, acidic basic conditions, etc., are not a problem for these bacteria. Sulphate-rich ocean depths are the most common habitat for these creatures.

Archaebacteria are distinct from other bacteria in many ways, including their unique cell membrane chemistry, gene transcription, and other properties.

It is common to classify archaebacteria into three distinct groups, i.e.

  • These archaebacteria, Chrenarchoeta, are able to withstand very high temperatures.
  • They are able to survive in salty environments, Euryarchaeota.
  • A lot of new information is yet to be found out about Koranchaeota, the earliest type of archaebacteria.

Difference Between Archaebacteria and Eubacteria

  • In contrast to the complex system seen in eubacteria, the organizational structure of archaebacteria is more streamlined.
  • Archaebacteria have pseudo peptidoglycans in their cell walls, whereas eubacteria have peptidoglycans containing muramic acid in their cell walls.

When it comes to eukaryotic microbes and their environments, the two are extremely different.

  • Eukaryotic organisms, like archaebacteria, may be divided into three groups: Gram-positive and Gram-negative bacteria, and Miscellaneous organisms.
  • Archaebacteria have a diameter between 0.1 and 15 nm. Eubacteria, on the other hand, range in diameter from 0.5 to 5 m.
  • Eukaryotes, on the other hand, create spores in order to maintain their dominance in harsh environments, such binary fission and budding.
  • Ectobacteria, a kind of eubacteria that may be found in soil, water, and even other creatures (such as fungi and bacteria), are the most common type of bacteria.


Unicellular prokaryotic microbes like archaea and eubacteria are found in nature. Monera is divided into two distinct kingdoms.

A wide variety of Eubacteria may be found all around the globe. These organisms may thrive in every environment, from dirt and water to the interior of a living creature. It is difficult to categorize Eubacteria since they have a complicated structure. Peptidoglycan and muramic acid compose the eubacteria cell wall.

Binary fusion and budding are the means by which they proliferate. In addition, eubacteria commonly develops spores in order to live in harsh environments. They measure from 0.5 to 5 micrometers in diameter. Gram-positive, Gram-negative, and Miscellaneous are all kinds of Eubacteria.

Archaebacteria, on the other hand, are often referred to as the current incarnation of bacteria that have been there for a long time. They have a basic structure and are often found in the ocean depths. ” They have pseudo peptidoglycan cell walls.

High or low temperatures, salty environments, and more may all be overcome by archaebacteria. They range in diameter from 0.1 to 15 nm. Binary fusion and budding are the means by which they proliferate. Three types of archaebacteria are often referred to as Crenarchoeta, Euryarchaeota, and Koranchaeota, respectively.

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