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Terms in this set (51)
-Antoni van Leeuwenhoek (dutch): first to make/use
simple microbes to discover bacteria
-Robert Koch: causative agents of disease and
Who were the fathers of
examined colonies of microorganisms (Anthrax: first
microbiology and what
disease proven to be bacterial)
did they do?
-Carolus Linnaeus: Created taxonomic system
(grouping similar organisms together --> eukaryotes
and protozoa)
1. microorganism must be found in abundance in all
organisms suffering from disease
2. microorganism must be isolated from diseased
organism and grown in pure culture
What are Koch's
3. cultured microorganism should cause disease when
postulates?
introduced into healthy organism
4. microorganism must be reisolated from the
inoculated, diseased experimental host and identified
as being identical to the original specific causative
agent
, Leeuwenhoek's -Prokaryotes: bacteria, archaea, fungi
micoorganisms grouped
into Linnaeus' 6 -Eukaryotes: protozoa, algae/plants, small
categories: multicellular animals
What does pathogenic Causes disease
mean?
-single-celled eukaryotes
Protozoa -similar to animals in their nutritional needs and
cellular structure
What does virus Injects its DNA to make more viruses
(bacteriophage) do?
What did Aristotle Spontaneous generation: living things can arise from
propose? nonliving matter
1. infusion is heated (steam escapes from open end of
flask)
Pasteur's experiments with 2.infusion sits; no microbes appear
"swan necked" flasks (air moves in and out of flask) - (months pass)
3. infusion remains sterile indefinitely
(dust from air settles in bend)
-Semmelweis and hand washing (disease puerperal
fever)
How can we prevent
infection and disease? -Lister's antiseptic technique
-Nightingale and nursing
-Prokaryotes: lack nucleus and membrane bound
organelles, small, simple structure, binary fission
Prokaryotes vs. Eukaryotes
-Eukaryotes: contain nucleus and membrane bound
organelles, large, complex structure,
sexual/nonsexual reproduction