An introductory presentation about microbiology including the history, scope and importance of this course.

1. An
Introduction

2. Derived from the Greek words “micros”
meaning small, “bios” meaning life and
“logia” meaning study of
The study of organisms that are so small—
”microorganisms” or “microbes”
Categorized into two: (1)Cellular-prokaryotes
and eukaryotes (2) Acellular-viruses

3. 1. Bacteriology
2. Virology
3. Mycology
4. Parasitology
5. Phycology
6. Immunology

4. 1. Microbiology has an impact in the daily lives
of humans
2. Some microorganisms are essential in
biotechnology and a wide range of industries
3. Some microorganisms, especially bacteria
and fungi, are important sources of
antimicrobial agents

5. 1. Some microorganisms act as saprophytes or
decomposers of waste products and dead
organisms
2. The study of microorganism has led to a better
understanding of how microorganisms produce
disease, paving the way to better disease
management and control
3. Certain diseases which were thought to have
been eradicated are now re-emerging

6. https://courses.lumenlearning.com/microbiology/chapte
r/microbes-and-the-tools-of-genetic-engineering/

7.  Archaeologists and evolutionists have uncovered evidence demonstrating the
existence of primitive microorganisms
https://veja.abril.com.br/ciencia/cientistas-reivindicam-
descoberta-de-fosseis-mais-antigos-da-terra/
https://www.inverse.com/article/39564-
oldest-fossils-earth

8.  Infectious diseases have existed for thousands of years
https://time.com/5561441/passover-10-
plagues-real-history/
https://en.wikipedia.org/wiki/Smallpox

9. Mid-1600s-Robert Hooke=Cell Theory
1670s-Anton von Leeuwenhoek=Animalcules
Middle and late 1800s-Louis Pasteur=Germ
Theory of Disease
Robert Koch=Koch’s Postulates
Late 1800s and first decade of 1900s=Golden
Age of Microbiology

11. 1. The microorganism or other pathogen must
be present in all cases of the disease
2. The pathogen can be isolated from the diseased host
and grown in pure culture
3. The pathogen from the pure culture must cause the
disease when inoculated into a healthy, susceptible
laboratory animal
4. The pathogen must be re-isolated from the new host
and shown to be the same as the originally inoculated
pathogen

12. Edward Jenner=Vaccine for smallpox
Joseph Lister=Aseptic Surgery
After WWII=antibiotics
Paul Ehrlich=Salvarsan
Alexander Fleming=Penicillin

13. F. A., Bartolome, E. P., Quiles (2020) Microbiology and Parasitology: A textbook and
Laboratory Manual for Health Sciences. 2nd Edition. p.51-58.