DEFINITION OF MICROBIOLOGY:

•  the study of certain nonliving entities as well as certain living organisms. Micro means very small-anything so small that it must be viewed with a microscope. 
  
  Therefore microbiology can be defined as the study of microbes
  
  Microbes that cause disease are known as pathogens. Those that do not cause disease are called non-pathogens.

CLASSIFICATION OF MICROBIOLOGY:


    1.Algae ( a rare cause of infections; intoxications (wt result from ingestion of toxin)

    2. Bacteria (antrax, chloera, diarrhea)

    3. Fungi (tinea, yeast vaginitis)

    4. Protozoa (toxoplasmosis)

    5.Viruses -AIDS