Microbiology is the study of microscopic organisms. It is a branch of biology that deals with unicellular, multicellular, and acellular organisms too small to be seen with the naked eye, including bacteria, fungi, protists, viruses, and archaea. Microbiology has many subdisciplines that study these microorganisms and their interactions with humans and the environment, such as virology, bacteriology, immunology, and medical microbiology. Microorganisms have distinguishing biological characteristics including their morphology, nutrition, physiology, reproduction, growth, metabolism, pathogenesis, antigenicity, and genetic properties.

1. Microbiology:
Study of microscopic organisms
Presented By :Khushbu’s Microbiology

2. MEANING OF MICROBIOLOGY
 Microbiology : from Greek word
 μῑκρος, mīkros, :"small";
βίος, bios, :"life";
-λογία, -logia
 Branch of biology
that dealing with
microscopic forms of life cells.

3. SUBDISCIPLINES OF MICROBIOLOGY
 Virology
 Bacteriology
 Mycology
Immunology
 Parasitology
Protistology
Medical (clinical) microbiology
Environmental microbiology
Industrial microbiology
Food microbiology
Veterinary microbiology

4. DEFINATION OF MICROBIOLOGY
• MICROBIOLOGY : study of microorganisms
• Unicellular : single cell
• Multicellular :cell colony
or
• Acellular : lacking cells.

5. Biological characteristics of microorganisms
MOROPHOLOGY
NUTRITION
 PHYSIOLOGY
 REPRODUCTION
GROWTH
METABOLISM
PATHOGENESIS
 ANTIGENICITY
 GENETIC PROPERTIES.

6. TYPES OF MICROORGANISMS
 EUKARYOTIC:
microorganisms possess membrane
bound organelles
 Include :FUNGI & PROTISTS
PROKARYOTIC—
microorganisms: conventionally classified as
lacking membrane-bound organelles
Include : BACTERIA & ARCHAEA
VIRUS :variably classified as organisms,
considered as a either as very simple
microorganisms or very complex molecules.

7. APPLICATION OF MICROBIOLOGY
 INDUSTRIAL FERMENTATION
 Antibiotic production
 Tissues Engineering
 DRUG delivery
 biotechnologically
important Enzymes such as
Taq Polumerase
 Industrial production
of Amino Acids :eg
 Alcohol, Vinegar and Dairy
Products Production
 BIOPOLYMER Production
 Microbial Biodegradation
 Various strains of non-
pathogenic Clostridia can
infiltrate and replicate
within solid tumors.:
Clostridial vectors.

8. Biological characteristics of microorganisms
 Morphology
 Nutrition
 Physiology
 Reproduction
 Growth
 Metabolism
 Pathogenesis,
 Antigenicity,
 Genetic Properties.

9. Thanks