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Bacteria (Dugan)

Microbiology

QuestionAnswer
this is a single closed circle of ds DNA containing about two to four thousand genes. there is a single copy per cell, and it is highly folded inside the cell chromosome
these are smaller circles of DNA often carrying genes for antibiotic resistance or toxin production, etc. it contains five to one hundred genes and has about one to twenty copies per cell. plasmid
this is the site of metabolic activity in a bacteria cytoplasm
ribosomes of bacteria are of this size and contain these subunits. 30s and 50s yields 70s
ribosomes exist in groups called this polysomes
these are storage granules and gas vacuoles inclusion bodies
eukaryotic ribosomal subunits consist of this 60s and 40s yield 80s
this is the site of respiration in bacteria cytoplasmic membrane
this provides shape and stregth to the cell cell wall
gram positive bacteria have a (thick or thin?) wall, and gram negative bacteria have (thick or thin?) cell wall. thick, thin
this structure allows a bacteria to bring in large molecules into the periplasmic space porin
is peptidoglycan layer unique to bacteria? yes
this is the site for lysozyme and site for many antibiotics (penicillins, cephalosporins, vancomycin) cell wall (peptidoglycan
this structure contains digestive enzymes and is located in the outer membrane. it is only found in gram negative bacteria periplasm
what are the three components of lipopolysaccharide (endotoxin) o specific side chain, core pollysaccharide, lipid A (often the toxic part, and is consistent for all bacteria
this structure contains a loose network of murein (peptidoglycan) chains within a gel containing hydrolytic and degradative enzymes. other enzymes in the gel are involved in various biochemical pathways including peptidoglycan synthesis periplasmic space
this is a name for a bacterial capsule and is usually composed of polysaccharides. it has a viscous, fibrous matrix that is antiphagocytic. encapsulated strains are referred to as smooth; nonencapsulated strains are rough. glycocalyx
this type of bacteria has a murein layer (thick) and a cytoplasmic membrane gram positive
this type of bacteria has an outer membrane, a thin murein layer, and a cytoplasmic membrane gram negative
what are the four components of a gram stain crystal violet, grams iodine, alcohol, safranin
this appendage is responsible for attachment. the sex type of responsible in genetic transfer pilli
this type of appendage provides motility and is driven by proton motive force. it also provides chemotaxis to cells. flagella
in chemotaxis when swimming straight the flagella move in this direction counterclockwise
in chemotaxis, when flagella move in a random fashion, they turn in this direction clockwise
bacteria resist adverse environmental situations such as starving by forming this spores
in this type of symbiosis, both organisms benefit mutualism
in this type of symbiosis, one may benefit but neither is harmed. commensalism
in this type of symbiotic relationship, one organism lives at the expense of the other an dmay do no harm parasitism
this provides a habitat for another organism host
this is an organism that can cause damage or disease within the host pathogen
this is the ability to inflict damage pathogenecity
this is the relative degree of pathogenicity virulence
the shape of the bacteria is determined by this structure cell wall
name three ways bacteria can be classified morphology, cell wall, antigens
bacteria divide via this process binary fission
what are the four phasis of growth in bacteria and which are exponential? lag, exponential (log), stationary, death (log)
this type of bacteria need preformed hydrocarbons in order to grow heterotrophic
bacteria that require a very enriched medium to grow are called this fastidious
these are iron chelating compounds that bacteria secrete so they can take up iron from the blood siderophores
this antibiotic blocks cell wall synthesis by blocking dephosphoralization of bactoprenol phosphate bacitracin
this antibiotic inhibits phosphoenopyruvate transferase and prevents formation of NAM fostfomycin
this antibiotic is an analog of D-ala and blocks addition of dipeptide to UDP-NAM cycloserine
this antibiotic binds to peptides of ppg monomers and blocks transglycosidase vancomycin
this class of antibiotics binds to transpeptidase B-Lactams (penicillins, cephalosporins, carbepenems)
this antibiotic blocks the initiating complex of the ribosome cycle linezolid
these antibiotics are the 30S inhibitors tetracycline, aminoglycosides
these antibiotics are 50s inhibitors macrolides, chloroamphenicol
these two antibiotics block DNA syntnhesis fluoroquinolones, etronidazole
this antibiotic blocks RNA synthesis Rifampin
these two antibiotics are folate antagonists fulfonamides, trimethoprim
this antibiotic blocks the cytoplasm membrane polymyxins
in the process of sterilizing from bacteria, you must autoclave at this temperature for this amount of time 121 degrees C for fifteen mins
during this process, you are reducing the number of bacterial pathogens to a safer level disinfect
in this process, you kill microorganisms on living tissue antisepsis
Created by: aferdo01