Microbiology is the study of microscopic organisms, either unicellular (single cell), multicellular (cell colony), or acellular (lacking cells). The term Microbiology derived from Greek μῑκρος, mīkros, "small"; βίος, bios, "life"; and -λογία, -logia. Microbiology encompasses numerous sub-disciplines including virology, mycology, parasitology, and bacteriology.

The term economics comes from the Ancient Greek (oikonomia, "management of a household, administration" from ”house" and (nomos, "custom" or "law", hence "rules of the house(hold for good management)". 'Political economy' was the earlier name for the subject, but economists in the late 19th century suggested "economics" as a shorter term for "economic science" to establish itself as a separate discipline outside of political science and other social sciences.

Eukaryotic microorganisms possess membrane-bound cell organelles and include fungi and protists, whereas prokaryotic organisms which all are microorganisms are conventionally classified as lacking membrane-bound organelles and includeeubacteria and archaebacteria. Microbiologists traditionally relied on culture, staining, and microscopy. However, less than 1% of the microorganisms present in common environments can be cultured in isolation using current means. Microbiologists often rely on extraction or detection of nucleic acid, either DNA or RNA sequences.

Viruses have been variably classified as organisms, as they have been considered either as very simple microorganisms or very complex molecules. Prions, never considered microorganisms, have been investigated by virologists, however, as the clinical effects traced to them were originally presumed due to chronic viral infections, and virologists took search—discovering "infectious proteins".

As an application of microbiology, medical microbiology is often introduced with medical principles of immunology as microbiology and immunology. Otherwise, microbiology, virology, and immunology as basic sciences have greatly exceeded the medical variants, applied sciences.

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National Association Of Microbiology Student (NAMS)

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