joswalt – Microbiology – Flashcards

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The urinary tract above the blader usually shows
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D. No bacteria
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The normal flora of the lower urethra may show
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Lactobacillus, Staphylococcus, Corynebacterium

E. all of the choices are correct

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The normal flora of the genital tract of women is
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E. affected by estrogen levels AND dependent on the activity of Lactobacillus
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A disease in which the urinary system is infected from the bloodstream is known as
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D. leptospirosis
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Leptospirosis is often contracted
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C. from contaminated animal urine
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Pregnant women with bacterial vaginosis are at risk for
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D. having a premature baby
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The genital tract infection characterized by an unpleasent odor and an increase in clue cells
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D. bacteria vaginosis
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Among the major causes of vulvovaginal candidiasis is/are
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E. intense antibacterial treatment, disruption of normal flora AND the use of oral contraceptives
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Staphlococcus aureus is the causative agent of
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C. toxic shock syndrome
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Toxic shock syndrome
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B. is due to exotoxins produced by S. aureus
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The incubation period of gonorrhea is approximately
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A. 2-5 days
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Gonococci are parasites of
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D. humans
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Gonococci selectively attached to certian epithelial cells by
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A. pili
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Untreated gonorreha in males may lead to
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sterility, urinary tract infections, prostactics abscesses, orchitis

E. all of the choices are correct

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A frequent complication of untreated gonorrhea in a women is
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A. pelvic inflammatory disease
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The treatment of neonates with drops of erythromycin directly into the eyes is to prevent
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D. ophthlmia neonatroum
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Which of the following mimics the infection caused by Neisseria gonorrhea?
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A. C.trachomatis
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The disease that results from Chlamydia trachomatis attaching to sperm and then possibly ascending into the fllopian tubes is
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C. pelvic inflammatory disease
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The infection form of Chlamydia trachomatis is a(n)
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B. elementary body
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The causative agent of syphilis is
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D. Treponemapallidum
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Treponemapallidum is similar in shape to
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C. Leptospirainterrorgans
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Which of the following manifest itself in three clinical stages?
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B. syphilis
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The presence of a hard chancre in primary syphilis is representive of the body's
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A. intense inflammtory response
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During which stages of syphilis is the patient non-infectious
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C. third
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Which of the diseases is a gumma formed?
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C. tertiary syphilis
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It has been estimated that 99% of the intestinal bacteria are
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D. obligate anaerobes
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The methanogens
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E. are part of the Archaea AND oxidize hydrogen gas to produce methane
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Methanogens often grow in association with
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D. chemoorganotrophs
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Comparatively greater energy is released when
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C.nitrate is the final electron acceptor
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Hydrogen sulfide
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E. All of the choices are correct
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Endospores
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E. are a dormant form of a bacterium AND are formed by members of medically relevent groups of bacteria
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Lactic acid bacteria such as Streptococci
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B. are obligate fermenters
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Streptococcus pyogenes
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C. is a beta hemolytic
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The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to
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B. acidity of the vagina
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Which of the following colonize the vagina during childbearing years?
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C. Lactobacilli
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Which of the following contains bacteriochlorophyll?
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E. Chromatium, Thiospirillum, Thidictyon
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Propionibacterium
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E. produces propionic acid AND is responsible for the wholes is swiss cheese
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A pacticular characteristic of disease-causing Streptococcus is;
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B. beta-hemolysis
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Clostridium, Lactobacillus, and Propionibacterium all
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E. oxidize organic compounds AND use organic compounds as terminal electron acceptors
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Which of the following are reffered to as mononuclear phagocytes?
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D. monocytes and macrophages
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The life span of tissue macrophages appears to be in the order of
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D. weeks to months
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The leukocyte described as having a small amount of cytoplasm surrounding a round nucleus is the
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A. lymphocyte
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The leukocyte responsible for adaptive immunity is the
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A. lymphocyte
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The "voices" of a cell are
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C. cytokines
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Skin and mucous membranes
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E. are the first line of innate immunity, act as physical barriers to infection AND contain antimicrobial secretions
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Interferons, complement, lysozyme, and lactoferrin are all examples of
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A. specific antimicrobial factors;
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Normal flora
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E. are the organisms that typically reside on your body AND protect against infection by pathogens
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Complement
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E. may be activated through three pathways, disrupts the cytoplasmic membrane of invading bacteria and foreign cells AND is a group of blood protien
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The complement pathway that requires antibodies to be activated is the
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B. classical pathway
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A group of interacting serum proteins that provide a nonspecific defense mechanism is
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A. complement
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The complement pathway that is activated by manna binding lectins is the
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D. lectins pathways
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The complment pathway that is activated by binding of C3bto cell surfaces is the
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B. alternate pathway
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The key molecule upon which all complement pathways converge is
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C. c3
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C3a and C5a are involved in
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E. inflamation AND enhancement of phagocytosis
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C3b is involved in
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A. opsonization
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The compelx resulting from complement activity that leads to cell lysis;is the
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C. membrane attack complex
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The immunoglobulin that is important in hypersensitivity reactions is
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D. IgE
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T cells and B cells are manufactured in the
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A. bone marrow
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T cells mature in the
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B. thymus
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The cells that actually screte antibodies are
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A. plasma cells
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CD4 cells are often
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A. T-helper cells
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CD8 cells are often
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C. T cytotoxic cells
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