MICROORGANISMS :
Microorganisms (Microbes)[微生物 weisheng wu4]:-
- Very small organisms which cannot be seen with the naked eye.
- May be unicellular or multicellular
- May exist alone like amoeba, or in colonies like Fungi & Bacteria.
- Found in all kinds of environment like cold climate, hot springs, deserts, marshy lands etc. They are also found inside the bodies of other organisms. ( bacteria in our colon)
Types of microorganisms [微生物 weisheng wu4]:-
1) Bacteria[细菌xi4 jun]: Pus on our skin. bacteria on our skin. A prokaryotic(lack a distinct nucleus) microorganism.
2) Fungi 【真菌 zhen jun]】: Bread mould, Penicillium, saprophytic 【腐生 细菌】。
3) Algae【藻类 zao3 lei4】 : Chlamydomonas, Spirogyra . Make their own food by photosynthesis.
4) Protozoan[原生动物 yuan2 sheng dong4 wu4] : Amoeba, Paramaecium。
5) Virus [病毒bing4 du2]: Viruses are different from other microorganisms as they reproduce only in the body of host organisms. Virus is a submicroscopic infectious agent that is unable to reproduce outside a host cell. It is non cellular.