Question

What are eubacteria?

Answer 1

Hint: Bacteria are the organisms that belong to the Kingdom Monera in the five-kingdom classification by Whittaker. They are microscopic and possess only a single cell. They are prokaryotic since they don’t possess a well-defined nucleus and membrane-bound organelles.

Complete answer: Eubacteria are the organisms that fall under the kingdom Monera. They are also known as ‘True bacteria’. They are single-celled and are prokaryotic in nature. It is one of the largest kingdoms. They possess a cell wall that limits the boundaries of the cell. The cell wall is made up of peptidoglycan cross-links.
-The cell wall has protective effects on the cell, also maintains the rigidity and the structure of the cells. Some members of this group of organisms may possess the flagella, for its locomotion. These organisms reproduce through structures known as pili, whereby the genetic material such as DNA is passed on from one bacteria to the other. They are devoid of a well-defined nucleus or any membrane-bound organelles suspended in the cytoplasm.
-The only organelles present are the ribosomes, which are involved in protein synthesis. The primitive form of a nucleus known as the nucleoid is found in the cells, where the aggregates of the genetic materials can be found, which is mostly DNA. Asexual reproduction can also be found in these organisms, which can be by binary fission, which is a simple process by which the parent cell gets divided into two daughter cells.
-Different phyla are coming under Eubacteria, which are cyanobacteria, spirochetes, chlamydias, and gram-positive bacteria. The examples of organisms falling under this kingdom are E. coli and S. pneumoniae. Before development in genetics and molecular biology, archaebacteria and eubacteria were included together in the Kingdom Monera.
-With further developments in the fields of the study, major differences were found out in these two groups of organisms. This led to the inclusion of a much vast grouping method known as domain, much vast and more basic than kingdoms. Where all the prokaryotic organisms come under the domain Archaea, while all the eukaryotes are included in the domain Eukaryota.

Note: Another group of organisms falling under kingdom Monera are the Archaebacteria. These are also prokaryotes and are said to be one of the earliest organisms to have existed. They are capable of surviving under extremely harsh conditions, such as the marshes and also the under ocean geysers.