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Chapters 1&4 Terms
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36
Microbiology
Undergraduate 1
01/29/2012

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Term
binomial nomenclature
Definition
first part of the binomial is the genus, and the second part the species name or specific epithet
Term
genus
Definition
capitalized, ex: Homo
Term
species
Definition
lower case, ex: sapien, group whose members possess similar anatomical characteristics and have the ability to interbreed and produce viable and fertile offspring
Term
pathogen
Definition
bacterium, virus, or other microorganism that can cause disease
Term
taxonomy
Definition
naming and classification of species and groups of species
Term
domain
Definition
bacteria, archaea, eukarya
Term
kingdom
Definition
further division domain, ex: for eukaryotes it's protista, fungi, plantae, animalia
Term
prokaryote
Definition
one circular chromosome not in membrane, no histones (basic proteins found in chromatin), no organelles, peptidoglycan cell walls, binary fission
Term
eukaryote
Definition
paired linear chromosomes (in nuclear membrane), hostones (basic proteins found in chromatin), organelles, polysaccharide cell walls, mitotic spindle
Term
cilia
Definition
propels protistans through water
Term
pseudopodia
Definition
propels protistans through water
Term
flagellum
Definition
propels protistans through water
Term
unicellular
Definition
single cell organism
Term
multicellular
Definition
consists of many cells
Term
heterotrophic
Definition
acquire their nutrients by absorption
Term
autotrophic
Definition
like plants, make their own food
Term
photosynthetic
Definition
use sunlight to synthesize foods from carbon dioxide and water
Term
chitin
Definition
polysaccharide (also seen in shells of insects/lobsters
Term
cellulose
Definition
makeup plant cell walls
Term
peptidoglycan
Definition
cell wall of peptides of proteins and sugars for bacteria
Term
hyphae
Definition
thin filaments, working end of mushroom, feeds the organism
Term
mycelium
Definition
made up of branches of hyphae
Term
helminths
Definition
Parasitic flatworms and round worms
Term
what are the three domains of all living things?
Definition
bacteria, archaea, eukarya
Term
which two domains are prokaryotic?
Definition
bacteria and archaea
Term
which domain is eukaryotic?
Definition
eukarya
Term
what was Robert Hooke's contribution?
Definition
discovered cell and cell wall
Term
what was Antoni van Leeuwenhoek contribution?
Definition
described live microorganisms that he observed in teeth scrapings, rain water, and peppercorn infusions; first person to see blood cells and sperm cells
Term
viruses
Definition
do not belong to any domains/kingdoms, are acellular, have either DNA/RNA, can be enveloped/non-enveloped, must parasitize living cells in order to replicate themselves
Term
bacteria
Definition
prokaryotic, cell walls are peptidoglycan (peptides of proteins and sugars), very small (1um-10um), reproduce by binary fission, are unicellular
Term
archaea
Definition
prokaryotic, very small, don't have peptidoglycan walls, live in extreme environments, halophiles (like to live in salty environments), thermophiles
Term
eukaryotes
Definition
larger than prokaryotes (10um-100um), DNA is in a nucleus, cells reproduce by mitosis, four kingdoms: protista, fungi, plantae, animalia
Term
protista
Definition
unicellular, move by cilia, flagella, and pseudopodia, ex: Giardia lamblia, algae, slime mold,
Term
plantae
Definition
descended from charophyceans, multicellular, have cell walls of cellulose, produce molecular oxygen, adapt to terrestial life
Term
fungi
Definition
heterotrophic, have cell walls of chitin (polysaccharide also seen in sheels of insects/lobsters), has hyphae filements, reproduce by spores, ex: mushrooms, mold, yeast
Term
animalia
Definition
eukaryotic hterotrophs, multicellular, have unique embryonic development with three layers (ectoderm, mesoderm, endoderm), animals lack cell walls, have muscle and nervous tissue
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