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37 Cards in this Set
- Front
- Back
bacillus
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a rod shaped procaryote
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capsule
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a layer of well organized material, not easily washed off, lying outside the bacterial cell wall
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cell envelope
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all the structuresof a procaryote from the plama membrane outward
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chemotaxis
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the movement of a microoragnism toward chemical attractants and away from chemical repellants
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coccus
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a spherical prokaryotic cell
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endospore
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an extremely heat and chemical resistant dormant thick walled spore that develops some within some gram positive bacteria
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fimbriae
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fine hair-like protein appendages ton some prokaryotes; some help attach cells to surfaces and there are involved in a type pf twitching motility
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fluid mosaic model
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The currently accepted model of cell membranes in which the membrane is a lipid bi-layer with integral proteins buried in the lipid and peripheral proteins more loosely attached to the membrane surface
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gas vacuole
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a proteinacious cytoplasmic organelle composed of clusters of gas filled vesicles; used my aquatic procaryotes to change location in a water column
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glycocalyx
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a network of polysaccharides extending from the surface of procaryotes
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inclusion bodies
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granules of organic or inorgainc material in the cytoplasm of bacteria
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lipopolysaccharides
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(LPSs)
Molecules containing both lipid and polysaccharide, which are located in the outer membrane of the cell wall of gram negative bacteria |
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nucleoid
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an irregularly shaped region in the procaryotic cell that consists of genetic material
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peptidoglycan
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an essential component of the bacterial cell wall composed of long chains of alternationg N-acetylglucosamine and N-acetylmuramic acid residues; chains are linked to each other by short chains of amino acids
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periplasmic space
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the space between the plasma membrane and the outermost laters of the cell wall in procaryotes
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plasmid
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a double-stranded DNA molecule that can exist and replicate independently of the chromosome or may be integrated with it; is is not required for the cell's growth and reproduction
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porin proteins
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proteins that form channels for the transport of small molecures across the outer membrane of a gram negative bacterial cell walls
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sex pili
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thin protein appendages required for bacterial conjugation; cells with sex pili donate DNA to recipient cells
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S-layer
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a regularly structured layer composed of protein or glycoprotein that lies on the surface of many procaryotes
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slime layer
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a layer of diffuse, unorganized, easily removed mateial lying outside the cell wall
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spirillum
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a rigid spiral-shaped bacterium
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spirochette
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a flexible, spiral shaped bacterium with periplasmic flagella
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inclusion bodies
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granules of organic or inorgainc material in the cytoplasm of bacteria
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|
lipopolysaccharides
|
(LPSs)
Molecules containing both lipid and polysaccharide, which are located in the outer membrane of the cell wall of gram negative bacteria |
|
nucleoid
|
an irregularly shaped region in the procaryotic cell that consists of genetic material
|
|
peptidoglycan
|
an essential component of the bacterial cell wall composed of long chains of alternating N-acetylglucosamine and N-acetylmuramic acid residues; chains are linked to each other by short chains of amino acids
|
|
periplasmic space
|
the space between the plasma membrane and the outermost layers of the cell wall in procaryotes
|
|
plasmid
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a double-stranded DNA molecule that can exist and replicate independently of the chromosome or may be integrated with it; is is not required for the cell's growth and reproduction
|
|
porin proteins
|
proteins that form channels for the transport of small molecules across the outer membrane of a gram negative bacterial cell walls
|
|
sex pili
|
thin protein appendages required for bacterial conjugation; cells with sex pili donate DNA to recipient cells
|
|
S-layer
|
a regularly structured layer composed of protein or glycoprotein that lies on the surface of many procaryotes
|
|
slime layer
|
a layer of diffuse, unorganized, easily removed material lying outside the cell wall
|
|
bacillus
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a rod shaped procaryote
|
|
capsule
|
a layer of well organized material, not easily washed off, lying outside the bacterial cell wall
|
|
cell envelope
|
all the structures of a procaryote from the plasma membrane outward
|
|
chemotaxis
|
the movement of a microoragnism toward chemical attractants and away from chemical repellants
|
|
coccus
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a spherical prokaryotic cell
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