what are example microorganisms
A microorganism or microbe is an organism which is microscopic, making it too small to be seen by the unaided human eye. The study of microorganisms is called microbiology. Microorganisms include bacteria, fungi, archaea, protists and viruses. The first of these four types of microorganisms may either be free-living or parasitic.
Microbes and disease. A few harmful microbes, for example less than 1 % of bacteria, can invade our body (the host) and make us ill. Microbes cause infectious diseases such as flu and measles.There is also strong evidence that microbes may contribute to many non–infectious chronic diseases such as some forms of cancer and coronary heart disease. Different diseases are caused by different types of micro-organisms.icrobes cause infectious diseases such as flu and measles. There is also strong evidence that microbes may contribute to many non–infectious chronic diseases such as some forms of cancer and coronary heart disease. Different diseases are caused by different types of micro-organisms.