which of the following statements is not true of brucella infection may occur via abrasions of t

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Which of the following statements is not true of brucella...

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please-help-me-answer-these-questions-thank-you-72-the-one-characteristic-by-which-an-unknown-cryptococcus-species-can-be-identified-as-cryptococcus-neoformans-is-a-appearance-of-yellow-colo-16852

72. The one characteristic by which an unknown Cryptococcus species can be identified as Cryptococcus neoformans is: A. appearance of yellow colonies B. positive urease test C. presence of a capsule D. positive phenol oxidase test 73. Penicillium can best be separated from Aspergillus by: A. color of colonies B. optimum growth temperature C. presence of rhizoids D. arrangement of the conidia on the conidiophores 74. Tubercle bacilli are specifically stained by: A. crystal violet B. 1% acid fuchsin C. methylene blue D. carbol fuchsin 75. Mycobacteria that produce pigment only after exposure to light are classified as: A. photochromogens B. scotochromogens C. rapid growers D. nonchromogens 76. In a suspected case of Hansen Disease (leprosy), a presumptive diagnosis is established by: A. isolation of organisms on Lowenstein Jensen medium B. detection of weakly acid fast bacilli in infected tissue C. isolation of organisms in a cell culture D. detection of niacin production by the isolated bacterium 77. Virus transport medium containing penicillin, gentamycin and amphotericin is used to collect and transport specimens for virus culture because this medium: A. enables rapid viral growth during the transport time B. inhibits bacterial and fungal growth C. destroys non-pathogenic viruses D. inhibits complement fixing antibodies 78. A Wright stain on a conjunctival smear from a neonate shows granular cytoplasmic perinuclear inclusion. This MOST indicative of: A. Chlamydia trachomatis B. herpes simplex virus C. cytomegalovirus D. Varicella zoster virus 79. Iodine staining of a McCoy cell monolayer culture of a cervical swab reveals a large brown intracytoplasmic inclusion. What is the most likely infecting organism? A. cytomegalovirus B. Ehrlichia chaffeensis C. Chlamydia trachomatis D. Rickettsia prowazekii 80. Mycoplasma have been cultivated from human mucous membranes and tissues, especially from the genital, urinary, and respiratory tracts. Chlamydia can be isolated from many of these sources as well. Both cause respiratory and genital infections. Adults may present with asymptomatic respiratory infection to serious pneumonitis, and identification of the etiologic agent usually determines the best antimicrobial treatment. Which of the following best describes the difference between mycoplasmas and chlamydiae? A. able to cause disease in humans B. able to cause urinary tract infection C. able to grow on artificial cell free media D. being able to stain well with Gram stain E. susceptible to penicillin

Jorge V.

30-chronic-granulomatous-lesions-containing-sulfur-granules-s-diagnostic-of-this-pathogen-peptostreptococcus-b-acinetobacter-c-pacnes-d-actinomyces-31-bacterial-vaginosis-is-characterized-by-01349

30. Chronic granulomatous lesions containing sulfur granules is diagnostic of this pathogen a. Peptostreptococcus b. Acinetobacter c. P. acnes d. Actinomyces 31. Bacterial vaginosis is characterized by an increase in a. Staph aureus b. Lactobacillus c. Mobiluncus d. Chlamydia 32. The Brucella species most often causing disease in the U.S. a. suis b. melitensis c. canis d. abortus e. tularensis 33. The main reservoir of Bordetella pertussis is domestic pets. TRUE FALSE 34. Exotoxin A production by Pseudomonas aeruginosa disrupts the production of a. cell membrane b. cell wall c. nucleic acids d. proteins 35. A nosocomial non-fermenting gram negative bacillus that is oxidase negative is a. Pseudomonas b. Aeromonas c. Stenotrophomonas d. Neisseria 36. Intra-abdominal abscesses are usually the result of a. Clostridium botulinum b. a single aerobic pathogen c. mixed aerobic and anaerobic pathogens d. Salmonella or Shigella 37. Rocky Mountain Spotted Fever is transmitted a. where contaminated food is served b. through close personal contact c. by human body lice d. by dog or wood ticks An accumulation of replicating organisms called morulae, found in the cytoplasm of white blood cells, is diagnostic for a. malaria b. chlamydia c. rocky mountain spotted fever d. ehrlichiosis Which of the following is not a trait of Chlamydia? a. contain both DNA and RNA b. transmitted by arthropod vectors c. produce an inert form d. obligate intracellular parasites When isolating a pathogen from a disease site, recovery or detection of that pathogen may not be possible due to a. not meeting the metabolic needs of the pathogen b. insufficient c. failing to maintain proper transport conditions d. all of the above Impetigo is an infection caused by a. Staph aureus not Strep pyogenes b. Strep pyogenes not Staph aureus c. Staph aureus or Strep pyogenes d. neither Staph aureus nor Strep of scarlet fever is caused by an erythrogenic toxin, which is coded by a phage. TRUE FALSE granuloma venereum is a sexually transmitted disease caused by a. Treponema pallidum b. N. gonorrhoeae c. Chlamydia trachomatis

Sri K.

___-1-biological-agents-are-assigned-to-biosafety-levels-bsls-based-on-a-whether-they-are-bacteria-viruses-or-other-microorganisms-b-their-susceptibility-to-laboratory-disinfectants-c-the-ri-66922

Biological agents are assigned to Biosafety Levels (BSLs) based on: a. whether they are bacteria, viruses, or other microorganisms. b. their susceptibility to laboratory disinfectants. c. the risk they pose to human health and the environment. d. the amount of the agent that will be used in the lab. 2. BSL 1 practices, equipment, and facilities are used when working with which type of microorganism? a. Bacteria that are well characterized and not known to consistently cause disease in healthy adult humans. b. Bacteria that are considered moderate-risk agents present in the community and associated with human diseases. c. Indigenous or exotic bacteria with potential for aerosol transmission and associated with human disease. d. Dangerous/exotic agents with a high risk of life-threatening disease. 3. The primary hazards to people working in a BSL 1 or 2 laboratory relate to: a. accidental skin punctures caused by mishandling of sharp lab tools. b. mucous membrane exposure due to accidental splashing of cultures. c. accidental ingestion of infectious material. d. All of the above are primary hazards in a BSL 1 or 2 lab. 4. Which of the following is required when working with BSL 2 agents? a. Biohazard warning signage on doors and lab areas where agents are kept or used. b. Self-closing, double door access to the lab facility. c. Clothing change when entering or leaving the lab. d. There are no special precautions needed for a BSL 2 lab. 5. What is the appropriate disposal method for a bacterial culture grown on an agar plate? a. Throw the culture away in any one of the several garbage containers in the room. b. Throw the culture away in the garbage container marked with a biohazard sign. c. Allow the agar to delete in the incubator and then discard in any garbage. d. Bacteria grown on an agar plate medium should never be disposed of.

Nayan G.

Transcript

00:01 Now, actually, we're going to be talking about bacteria.

00:03 So let's go with question 72.

00:07 The 72 says, with that one character, about which an unknown cryptococcus can identify as cryptococcus nifformance is the your positive phenoloxidase test.

00:20 Number 73.

00:22 The penicillin can best be separated from aspergillus by the arrangement of the conneton on the connoissephors.

00:32 74, tubercle, bacillare specifically stained by decarbofusion.

00:44 75, microbeacteria that produce pigment, only after exposure to light are classified as photochromagens, which is answer to choice.

00:57 A, 76.

01:01 In a suspected case of leprosy, a presumptive diagnosis is established by b detection weekly acid fast bacteria, vasili and infected tissue.

01:18 77, virus transport media contain penicillotomycin and amphatercin is used to collecting transport specimens for virus culture because this media...

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