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Lecture 3

BIOL 150A Lecture Notes - Lecture 3: Erythromycin, Mycosis, Norovirus


Department
Biology
Course Code
BIOL 150A
Professor
nyugen
Lecture
3

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MICROBIOLOGY OVERVIEW
HISTORY OF MICROBIOLOGY
You should make your own notes summarizing the historical significance of each of the
following individuals:
Ignaz Semmelweis
o
o
o
o
o
Louis Pasteur
o
o
o
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Robert Koch
o
o
o
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Alexander Fleming
o
o
o
o
o
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MICROBIOLOGY
Definition
o
Microorganisms include:
oProkaryotic
oEukaryotic
oAcellular
NOTE: fewer than 3% of known
Microorganisms are pathogenic
(disease causing)
BACTERIA
____________________ (cells are ancient, primitive, simple, small)
Cells ____________________ (eg. have no nucleus, golgi, ER, mitochondria, vacuoles,
etc.)
5000 known species (estimated ____________________ species!)
Nomenclature
____________________ system
Ex. Escherichia coli ( )
Classification
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____________________ (anaerobes vs. obligate / facultative aerobes)
____________________ (use light energy, chemical energy from NH3 / H2S / Fe++,
inorganic molecules, chemical energy from organic molecules)
Differential ________________________________________
• ________________________________________
• ________________________________________
____________________ (cell structure and colony shape )
Morphology
Organized by
oSize
____________________
oShapes
____________________
____________________
____________________
oGroupings
____________________
____________________
____________________
____________________
____________________
____________________
Bacterial Cell Structure: Prokaryotic
Prokaryotic cells lack membranous organelles
DNA usually ____________________ (not enclosed in nucleus)
Abundant ____________________ (function in ‘translation’ - make proteins)
Cell envelope = ______________________________________ = Phospholipid Bilayer
oPhospholipid bilayer = ____________________
May have ____________________ (additional gelatinous protective layer)
May have ____________________ for locomotion or ____________________ for
attachment)
(vibrios, spirella, spirochaetes)
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