1. Development of Microbiology History of Microbiology Siti Sarah Jumali Room 3/14.

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1. Development of Microbiology History of Microbiology Siti Sarah Jumali Room 3/14

Timeline 1677 Observed "little animals" (Antony Leeuwenhoek) (Antony Leeuwenhoek) 1796 First scientific Small pox vaccination (Edward Jenner) (Edward Jenner) 1850 Advocated washing hands to stop the spread of disease (Ignaz Semmelweis) (Ignaz Semmelweis) 1861 Disproved spontaneous generation (Louis Pasteur)(Louis Pasteur) 1862 Supported Germ Theory of Disease (Louis Pasteur)(Louis Pasteur) 1867 Practiced antiseptic surgery (Joseph Lister)(Joseph Lister) 1876 First proof of Germ Theory of Disease with B. anthracis discovery (Robert Koch) (Robert Koch) 1881 Growth of Bacteria on solid media (Robert Koch)(Robert Koch) 1882 Outlined Kochs postulates (Robert Koch)(Robert Koch) 1882 Developed acid-fast Stain (Paul Ehrlich)(Paul Ehrlich) 1884 Developed Gram Stain (Christian Gram) (Christian Gram) 1885 First Rabies vaccination (Louis Pasteur)(Louis Pasteur) 1887 Invented Petri Dish (R.J. Petri)(R.J. Petri) 1892 Discovered viruses (Dmitri Iosifovich Ivanovski)(Dmitri Iosifovich Ivanovski) 1899 Recognized viral dependence on cells for reproduction (Martinus Beijerinck)(Martinus Beijerinck) 1900 Proved mosquitoes carried the yellow fever agent (Walter Reed) (Walter Reed) 1910 Discovered cure for syphilis (Paul Ehrlich) (Paul Ehrlich) 1928 Discovered Penicillin (Alexander Fleming)(Alexander Fleming) 1977 Developed a method to sequence DNA (W. Gilbert & F. Sanger)(W. Gilbert & F. Sanger) 1983 Polymerase Chain Reaction invented (Kary Mullis)(Kary Mullis) 1995 First microbial genomic sequence published (H. influenzae) (TIGR)(H. influenzae)(TIGR) ____1600_______1700_______ 1800_________ 1900_______

What is microbiology? Microbiology is the study of microorganisms, which are microscopic. Examples: 1.Bacteria 2.Virus 3.Protozoa 4.Fungi 5.Algae

So… Microbes: Germs that causes diseases Biology: The study of life Microorganisms: Bacteria, Virus, Protozoa, Fungi, some Algae But.. Some can organisms studied by microbiologists can be visualized with naked eye such as bread molds and filamentous algae, bcuz of the technique similarities

Virologists- viruses Bacteriologists- bacteria Phycologists/ Algologists- Algae Mycologists- fungi Protozoalogists- protozoa Others are like medical microbiologists/ immunologists, etc Microbiologists and “their organisms”

Invention of 1 st compound microscope Zacharias Jannsen ( ) was a Dutch spectacle-maker

Galileo Galilei (1564 – 1642) Improved microscope

Antonie Philips van Leeuwenhoek Improved microscope 1 st to observe and describe single celled organisms, “animalcules”, we now refer to as microorganisms. 1 st to record observations of muscle fibers, bacteria, spermatozoa and blood flow in capillaries (small blood vessels).

Basic shapes CocciRods/ BacillusSpirals/ Spirochete Staphylococci Streptococci

Robert Hooke ( ) Coined the term cells

Spontaneous generation Spontaneous generation or Equivocal generation- the origin of life from non- living matter, By Aristotle, who compiled and expanded the work of prior natural philosophers; it held sway for two millennia. Generally accepted until disproven in the 19th Century by the experiments of Louis Pasteur, supporting scientists (such as Francesco Redi who had performed similar experiments in the 17th century). Ultimately, it was succeeded by germ theory and cell theory.

Assignment Work in groups Explain about 1.Spontaneous generation 2.Role of microorganisms in disease 3.How microorganisms affect their environment