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 |