Germs are tiny living organisms, most of which are invisible to the naked eye.
To microorganisms include protozoa (single-celled animals), bacteria (see), spirochaetes, rickettsiae (intracellular parasites, pathogens special group of infectious diseases, the so-called ricketsiosis), viruses (see) and fungi (see parasitic Fungi).
Sometimes microorganisms are called germs, but in this case they do not consider the simplest.

Microorganisms (microbes) - invisible to the naked eye organisms of plant and animal origin. The study of microorganisms became possible after the invention of the microscope. Microorganisms is a collective term, it contains bacteria, viruses, yeast, actinomyces and fungi, algae, protozoa. The value of M ranges from 50 MK 10 MMK.
Among all shapes, merged into the group, are unicellular (bacteria, yeast, protozoa and multicellular (filamentous bacteria, some fungi). The study of microorganisms involved in Microbiology (medical, veterinary and others), bacteriology, Virology, protozoology. The set of varieties of M. of living in a particular substrate (air, soil, bowels, and so on), is called microflora. Apart from the size, number of features distinguishes microorganisms from other organisms. Meters can be interconnected in adversarial (see Antagonism of germs), symbiotic (see Symbiosis) or metabolicheskikh (waste products of some Meters serve as a source of energy and power for other M) relations. Decomposing plant and animal remains, carry out M mineralization of organic substances, taking an active part in the circulation of substances in nature. Some Meters to cause disease in humans, animals and plants.
Major groups of microorganisms - see Bacteria, Viruses, parasitic Fungi, Yeast, Protozoa.