up vote 3 down vote accepted. $\pi$ is the name of the constant relating the diameter and circumferance of a circle. It's a definition, a particular constant that we thought deserved a name. $e$ happens to be the name of a constant from a particular limit. Like $\pi$, we named it because we thought it would be useful. In Physics, many, many constants have names. Gravitational constants, expansional constants, electrical constants, etc. Each is useful, but somewhat arbitrarily chosen.
Bacteria: The Monera Kingdom Bacteria are classified into two groups: Eubacteria (true bacteria) and Archaebacteria (Ancient Bacteria). They are autotrophic. 28-1 Chapter 28: Microbiology. 28-2 Viruses Viruses are noncellular, nonliving particles and therefore are not included in the classification scheme.
Here is a brief explanation... Kingdom: Bacteria This organism belong to the kingdom bacteria because it fits the typical characteristics of prokaryotic bacteria, which I have already listed in the page what are bacteria.. Phylum: Actinobacteria Actinobacteria is bacteria which is highly gram positive.ere is a brief explanation... Kingdom: Bacteria This organism belong to the kingdom bacteria because it fits the typical characteristics of prokaryotic bacteria, which I have already listed in the page what are bacteria.. Phylum: Actinobacteria Actinobacteria is bacteria which is highly gram positive.