Microorganisms infectious diseases

(8.L.1.1 and 8.L.1.2)


Definition- The branch of science that deals with microorganism

  • Microbiology is the study of organisms, most of which are too small to be seen with the naked eye, including bacteria, algae, protozoa,fungi,and viruses

  • There are 7 main microorganisms in microbiology.


Definition-A non-living pathogen that can change mutate,It infects a host cell and replicates to cause illness and disease.

Viruses lack some characteristics of living organisms but Viruses have a core of nucleic acid surrounded by a protein coat, At there core all Viruses contain DNA.


Definition-Single celled protectorates that can cause disease.Multiply rapidly forming colonies.


Definition-A single celled or multi cellular organism that can decompose or absorb organic matter.Ex:mushrooms,yeast, or mold.


Definition-An organism that lives in or on another organism and benefits by deriving nutrients at the host's expense.


Definition-Occurrence of a disease greater than would otherwise be expected at a particular time and place.