Test Answers on bacteriology

zChapter 12 Clinical Bacteriology

question S. aureus answer skin, subcutaneous infections, bacteremia,endocarditis, toxic shock, food poisoning catalase +, facultative anaerobes question S. epidermidis answer opportunistic, nosocomial infectionsnormal skin flora and an opportunist that causes endocarditis of artificial heart valves catalase +, facultative anaerobes question Streptococcus pyogenes answer ?-hemolytic question Streptococcus agalactiae answer Group BBeta hemolyticNormal flora of GI urogenital […]

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Veterinary Bacteriology: Test 1 old exam questions

question Using the nomenclature of the A-B model for binary toxin structure, the B subunit of anthrax toxin would most closely correspond to… answer protective antigen (edema factor and lethal factor would be A / active subunit)   question The principal polymer structure of a bacterial cell wall (peptidoglycan) acquires most of its strength at […]

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Medical Bacteriology

question Scalded Skin Syndrome (SSS)is caused by? answer an Exfolative toxin question Urinary Tract Infections are caused by? answer Staphylococcus saprophyticus question Nosocomial Infections (catheters) are derived from? answer Staphylococcus epidermis question Staphylococcal food poisoning is caused by? answer Staphylococcus entertoxin question Toxic Shock Syndrome is caused by? answer TSST – 1 question Name the […]

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Answers on Determinative Bacteriology Flashcards

question GBS commonly colonizes what areas? answer Lower GI tract and Vaginal epithelium of healthy adults. question The first GBS strain was studied by whom? answer Rebecca Lancefield. question First GBS strains studied by Lancefield were isolated from what? answer Cows with mastitis. question First report of GBS in humans appeared in what year? answer […]

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Flashcard Answers on Determinative Bacteriology

question General Characteristics of Enterobacteriaceae answer   Gram – rod motile via peritrichous flagella or non-motile No spores grow on peptone based media without additional NaCl grow well on MAC Aerobic and Anaerobic growth, generally facultative anerobes ferment glucose with gas production catalase + oxidase –  NO3—->NO2 Widely distributed in nature, i.e. plants, soil, and […]

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Determinative Bacteriology Exam Test

question Corynebacterium answer •Gram positive, straight or slightly curved, thin rods that are slightly tapered or have “club ends”. •Various arrangements, “Chinese letter”  •1883 Klebs described the strain  •1884 Loeffler proved it caused diphtheria                         •Genus contains: –Gram positive, straight or slightly curved thin rods […]

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Test Questions on Determinative Bacteriology

question Taxonomy of the family Neisseriaceae answer •Based on 16s rRNA sequences and hybridization studies. •Genus Neisseria 16 species.   N. gonorrhoeae, N. meningitidis, N. lactamica, N. sicca, N. subflava, N. mucosa, N. flavescens, N. cinerea, N. polysaccharea, N. elongata, N. weaveri, N. canis, N. macacae, N. denitrificans, N. iguanae, N. dentium   question Neisseria gonorrhoeae […]

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Determinative Bacteriology Test Answers

question Group B Streptococci answer   •GBS, commonly colonize the lower gastrointestinal tract and vaginal epithelium of healthy adults, but they remain a potentially devastating pathogen to susceptible infants.  •Because the newborn is deficient in host defenses, ie, phagocytes, complement and specific antibody; therefore an environment exists for potential problems •The first strains of GBS […]

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Determinative Bacteriology Flashcard Answers

question Classification of the Streptococci, Enterococci and Streptococci like bacteria answer    Based on molecular methods, DNA-DNA hybridizations, and 16s rRNA sequencing.    question Current classification  answer   •Order “Lactobacillales” •Family “Staphylococcaceae” –Genus Gemella •Family “Lactobacillaceae” –Genus Pediococcus •Family “Carnobacteriaceae” –Genus Alloiococcus, Dolosigranulum •Family “Enterococcaceae” –Genus Enterococcus, Vagococcus, Melissococcus •Family “Leuconostocaceae” –Genus Leuconostoc, Oenococcus, Weissella •Family […]

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Test Answers on Determinative Bacteriology

question Micrococcus answer   •Gram positive cocci •Tetrads, clusters •Aerobic •Nonmotile •Catalase+ •Oxidase+ •Genetic relatedness to Arthrobacter and Actinomyces. •Found in the environment and transient flora skin  of humans and other animals. •M. luteus, M. lylae   question Planococcus answer •Gram positive cocci •Pairs, tetrads •Aerobic •“motile coccus”, all strains have 1 to 3 flagella […]

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Determinative Bacteriology Flashcards with Answers

question List some characteristics of Mycobacteria answer Acid fast/not G- or G+ non spore-forming non motile walls are rich with lipid content not reactive to staining with analine dyes straight, slightly bent rods mycolic acids allow it to grow in sputum question Which species of Mycobacterium are slow growers, and what defines a slow grower? […]

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BASIC BACTERIOLOGY ELDER

question Commensalism answer Relationship of convenience. One species benefits, the other neither benefits nor is harmed.This can shift to mutualism or parasitism.ex- normal flora of gut, skin, and mucous membranes question Symbiosis/Mutualism answer Reciprocal benefits exist for one or both organismsex- some human enteric bacilli secrete vit K; gut bacteria assist in establishment of tolerance […]

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Bacteriology Test Questions

question Acid-fast answer MycobacteriumNocardia (partial) question Aerobic respiration answer oxidation of substrates coupled to electron transport with O2 as final electron acceptor38 ATP/glucose question Aerointolerant answer anaerobes with non-oxygen final electron acceptorsvery sensitive to oxygen radicalsquite a few of the medically relevant bacteria question Aerotolerant answer anaerobes with non-oxygen final electron acceptorscan detoxify oxygen radials […]

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Bacteriology

question Phenolic compounds answer affect lipid-rich plasma membranes, so the cell leaks its contents (especially useful against mycobacteria) question Phenol coefficient answer ratio of antimicrobial activity compared to pure phenol. smaller means more active question alcohols answer denatures proteins and dissolves lipids which disrupts membranes question quaternary ammonium compounds answer decreases surface tension and thereby […]

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Bacteriology/Mycology

question What is the standard incubation temperature for bacteria? answer 37 C question At what temperature are plasmids inactivated? answer 60 C question What temperature kills most bacteria? answer 80-90 C question Do Koch’s postulates apply to all diseases? answer No question What is the term for the asymptomatic state of a disease, for example […]

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Bacteriology Lab Midterm

question Give the Gram reaction and morphology [image] answer Gram-positive cocci (sarcina – tetrads) question Give the Gram reaction and morphology [image] answer Gram positive bacilli question Gram reaction and morphology [image] answer Gram negative coccobacilli question Gram reaction and morphology [image] answer Gram negative bacillus question Name the type of hemolysis for A [image] […]

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Bacteriology Exam 2

question Neonatal Enteritis1) Name the organism that causes _____2) Symptoms of ____3) Species affected answer 1) Escherichia coli (ETEC with LT and or ST + K88)2) watery diarrhea in first 12 hours, high mortality3) Pigs question Weanling Enteritis1) Name the organism that causes _____2) Symptoms of ____3) Species affected answer 1) Escherichia coli (ETEC with […]

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10.17 Intro to Bacteriology

question What type of ribosomes are in eukaryotes? answer 80S question T/F Most bacteria possess peptidoglycan answer true question T/F Prokaryotic mRNA is usually spliced before it can be translated. answer false! prokaryotic mRNA does not need processsing question What are the four steps of the gram stain? answer step 1= crystal violet for 1 […]

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