The 4 Types of Microbes

Topics: Bacteria, Eukaryote, DNA Pages: 2 (490 words) Published: May 7, 2013
The 4 different types of Microbes

Organisms that cause disease are known as pathogens. The 4 different types of microbes than can cause disease are;

Bacteria, also known as Bacterium in the singular term, are a prokaryote. Prokaryotes are simple , single celled organisms. Bacteria get their nutrients from the environments in which they live, in some cases, that is the human body. They are larger than viruses, but smaller than human body cells. Bacteria are living things, but are neither plants nor animals. When bacterium infect, they reproduce fast. Bacteria produce toxins which cause the illness. Bacteria are easier treat than a fungus. Bacteria can cause illnesses such as Cholera, TB (tuberculosis), Septecimia, and anthrax. Bacteria can be treat with anti-biotics which can kill and fight the infection. However, not all bacteria are bad, some bacterium's are useful in nature. Http://

Protozoa, also know as protoctista, are like our own body cells. They are single celled organisms with a nucleus and a cell membrane. These can also be known as eukaryotes. Eukaryotes are ten times the size of Prokaryote cells. They are more complex, and larger organisms. Protozoans are generally too small to be seen by the naked eye, but can be seen clearly under a micro-scope. Protozoans can cause illness and diseases such as Malaria, Sleeping sickness, and dysentery. Http://

Viruses contain a core of nucleic acid (DNA or RNA) and are surrounded by protein. Viruses are not considered to be living organisms. They are inactive when living outside a cell. Viruses make copies of themselves, then break out and infect others. Viruses cannot be treat with anti-biotics. Viruses are too...
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