EVOLUTION OF MICROBIOLOGY Flashcards
ο° Microbially induced sedimentary structures were
found in Western Australia depicting earliest record of bacterial community to exist.
ο° These microbial mats bind together sedimentary
grains to survive water current.
3.5 BILLION YEARS AGO
Occurred during the reign of Pharaoh Mempses in the First Dynasty of Egypt was the first
recorded epidemic in human history
3180 B.C. THE GREAT PESTILENCE
Caused by bacteria Yersi ni a pest is transmitted by rat flea
THE BUBONIC PLAGUE 542 AD, 1347
Caused by variola virus. Originated from China and
spread worldwide
1122 B.C. EARLIEST RECORD OF SMALL POX
Second epidemic killed ___ of European population. Also called as β____β
1/3, THE BLACK DEATH
First epidemic occurred in the year ____ during ____ and ______ killing _____ million in the span of two centuries.
- 542
- THE SASANIAN & EASTERN ROMAN EMPIRE
- 25 - 50 MILLION
is credited with making one of
the earliest compound microscopes that has two lenses.
ZACHARIASAA JANSSEN
created a single-lens
microscope which allowed him to observe and provide
accurate descriptions of bacteria, protozoa, and fungi. He is also known as the βFather of Microbiologyβ mid-1600s
ANTON VAN LEEUWENHOEK
- All living organisms are composed of one or more cells.
- The cell is the basic unit of structure and organization in organisms.
- Cells arise from pre-existing cells.
CELL THEORY
pioneered the formulation of Germ Theory of Disease which states that microorganisms
known as pathogens o βgermsβ can lead to disease
(unsuccessful)
LOUIS PASTEUR (1857 - 1867)
He also developed the process of pasteurization, which
became the basis of aseptic techniques
LOUIS PASTEUR
These theories and techniques were also used by _________
to develop aseptic techniques during surgery
JOSEPH LISTER
proved the Germ Theory of Disease which led to formulation of Kochβs Postulate.
ο· He successfully identified the following different bacteria that caused anthrax, septicaemia,
tuberculosis, and cholera.
ο· He used revolutionary methods such as agar culture
and bacterial staining.
ROBERT KOCH (1876)
discovered penicillin, an antibiotic drug which was responsible for enabling the control of many infectious diseases like tuberculosis, pneumonia, and meningitis
ALEXANDER FLEMING (1928)