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Microbes are minute, unicellular organisms that are invisible to the naked eye. They are also known as microorganisms or microscopic organisms as they could only be seen under a microscope. They make up almost 60% of the earth’s living matter.
The term “microbes” is used to describe several different life forms with different size and characteristics. few of these microbes include:
Bacteria
Fungi
Protists
Viruses
Archaea
Microbes can be useful as well as harmful. Certain microbes cause severe infections and diseases and can also spoil food and other materials. While others play an important role in maintaining environmental balance.
Let us have a detailed look at the different types of microorganisms and their importance.
Types of Microbes
The different types of microbes are:
Bacteria
Bacteria are unicellular, microscopic, prokaryotic microbes that contain no true nucleus.
Their cell wall is made up of peptidoglycan. They have a flagellum that facilitates locomotion.
Bacteria are of different types depending on their shapes and sizes. For eg., spherical-shaped bacteria are known as cocci; rod-shaped bacteria are known as bacilli; spiral-shaped, spirilla, etc.
They reproduce through binary fission, transfer of genetic material through transformation, transduction and conjugation, and through sporulation.
Bacteria play an important role in human survival. They breakdown nutrients in the digestive system into simpler forms.
Few bacteria such as Rhizobium are involved in nitrogen fixation.
They are also used in making antibiotics and can also be used in agriculture as pesticides.
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