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30 Cards in this Set
- Front
- Back
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The flagellar organization (with an outer sheath membrane) found in the spirochetes.
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Endoflagella
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A spherical bacterium.
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coccus
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The chromosomal region of a prokaryotic cell.
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nucleoid
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A bacterium characterized by twisted or curved rods, generally with a rigid cell wall and flagella.
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spirillum
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A chain of bacterial rods; also a genus name.
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streptobacillus
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An anionic polysaccharide derivative found in the cell wall of gram-positive bacterial cells.
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Teichoic acid
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A polyphosphate-storing granule that stains deeply with methylene blue commonly found in diphtheria bacilli; also called volutin.
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metachromatic granule
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A cytoplasmic storage structure found in many prokaryotic cells.
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inclusion body
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The gel-like area between the cell membrane and outer membrane in gram-negative bacterial cells.
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periplasmic space
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An external carbohydrate layer consisting of the capsule or slime layer.
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glycocalyx
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A bacterium characterized by spheres in a grapelike cluster; also a genus name.
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Staphyloccus
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A thick surface layer of secreted polysaccharides that serves to protect the cell from desiccation and for attachment to other surfaces.
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capsule
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A bacterial rod; also a genus name.
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bacillus
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A small, closed-loop molecule of extrachromosomal DNA that replicates independently of the chromosome.
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plasmid
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A molecule composed of lipid and polysaccharide, found in the outer membrane of gram-negative bacteria, where it functions as an endotoxin.
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Lipopolysaccharide LPS
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A short, hair-like structure used by some bacterial cells for attachment.
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pilus
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A complex molecule of the bacterial cell wall composed of alternating units of N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) cross linked by short peptides.
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peptidoglycan
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A twisted bacterial rod with a flexible cell wall containing axial filaments for motility.
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Spirochette
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The complex structure consisting of the cell wall and cell membrane.
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cell envelope
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A thinner, flowing, and less tightly bound form of a glycocalyx.
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Slime Layer
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A long, hair-like structure composed of protein and responsible for motility in some prokaryotic and eukaryotic microorganisms.
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Flagellum
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A small, circular DNA molecule that occurs frequently in some bacterial cells and can carry genes for antibiotic resistance.
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R plasmid
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A protein in the outer membrane of gram-negative bacteria that acts as channels for the passage of molecules into the periplasmic region.
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Porin
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The representation for the cell membrane where proteins float within or on a bilayer of phospholipid.
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Fluid mosaic model
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A cytoplasmic body in certain bacterial cells that assists orientation to the environment by aligning with the magnetic field.
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Magnetosome
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A cellular component of RNA and protein that participates in protein synthesis.
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Ribosome
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A form of bacterium occurring as a curved rod.
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vibro
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A movement toward a chemical attractant.
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chemotaxis
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A chain of bacterial cocci; also a genus name.
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Streptococcus
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A membrane forming part of the cell wall of gram-negative bacterial cells and containing lipopolysaccharide (LPS).
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outer membrane
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