Ch 12 Micro

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XQWCat
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184585
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Ch 12 Micro
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2012-11-19 23:31:51
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Chapter 12 microbiology test 3
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  1. Which of the following statements about fungi is false?A) All fungi are unicellular.B) All fungi have eukaryotic cells.C) Fungi are heterotrophic.D) Most fungi are aerobic.E) Few fungi are pathogenic to humans.
    A
  2. Which of the following statements about helminths is false?A) They are heterotrophic.B) They are multicellular animals.C) They have eukaryotic cells.D) All are parasites.E) Some have male and female reproductive organs in one animal.
    D
  3. Which of the following statements about the Oomycote algae is false?A) They form hyphae.B) They produce zoospores in a sporangium.C) They cause plant diseases.D) They have chlorophyll.E) They reproduce sexually.
    D
  4. Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all 17 patients, Elastoplast bandages were placed over sterile gauze pads to cover wounds. Fourteen of the patients had surgical wounds, two had venous line insertion sites, and one had a bite wound. Lesions present when the bandages were removed ranged from vesiculopustular eruptions to ulcerations and skin necrosis requiring debridement. Fungi are more likely than bacteria to contaminate bandages becauseA) They are aerobic.B) They can tolerate low-moisture conditions.C) They prefer a neutral environment (pH 7).D) They have a fermentative metabolism.E) They cannot tolerate high osmotic pressure.
    B
  5. Which of the following statements is false?A) A lichen doesn't exist if the fungal and algal partners are separated.B) Lichens are parasites.C) In a lichen, the alga produces carbohydrates.D) In a lichen, the fungus provides the holdfast.E) Lichens are important soil producers.
    B
  6. Which of the following pairs is mismatched?A) Plasmogamy – union of two haploid cells B) Karyogamy – fusion of nucleusC) Meiosis – cell division resulting in haploid cellsD) Anamorph – produces asexual sporesE) Deuteromycota – a phylum of fungi
    E
  7. 1-Arthroconidium   2-Ascospore  3-Basidiospore  4-Blastoconidium  5-Chlamydoconidium  6-Conidiospore  7-Sporangiospore  8-Zygospore
    In Table 12.1, which of these spores are characteristic of Penicillium?A) 1 and 2B) 3 and 4C) 2 and 6D) 1 and 4E) 4 and 6
    C
  8. 1-Arthroconidium   2-Ascospore  3-Basidiospore  4-Blastoconidium  5-Chlamydoconidium  6-Conidiospore  7-Sporangiospore  8-Zygospore
    In Table 12.1, which of these spores are characteristic of Rhizopus?A) 1 and 2B) 6 and 7C) 2 and 8D) 1 and 4E) 7 and 8
    E
  9. 1-Arthroconidium   2-Ascospore  3-Basidiospore  4-Blastoconidium  5-Chlamydoconidium  6-Conidiospore  7-Sporangiospore  8-Zygospore
    In Table 12.1, which spore is in a sac and results from the fusion of two nuclei from different strains of the same fungi?A) 1B) 2C) 4D) 6E) 8
    B
  10. 1-Arthroconidium   2-Ascospore  3-Basidiospore  4-Blastoconidium  5-Chlamydoconidium  6-Conidiospore  7-Sporangiospore  8-Zygospore
    In Table 12.1, which spore is found externally on a pedestal?A) 1B) 3C) 5D) 7E) None
    B
  11. 1-Arthroconidium   2-Ascospore  3-Basidiospore  4-Blastoconidium  5-Chlamydoconidium  6-Conidiospore  7-Sporangiospore  8-Zygospore
    In Table 12.1, which is a thick-walled spore formed as a segment within a hypha?A) 1B) 3C) 5D) 7 E) None
    C
  12. 1-Arthroconidium   2-Ascospore  3-Basidiospore  4-Blastoconidium  5-Chlamydoconidium  6-Conidiospore  7-Sporangiospore  8-Zygospore
    In Table 12.1, which of these spores are asexual spores?A) 1, 4, 5, 6, 7B) 2, 3, 6, 8C) 1, 3, 5, 8D) 2, 4, 6, 7, 8E) All
    A
  13. In mid-December, a woman with insulin-dependent diabetes who had been on prednisone fell and received an abrasion on the dorsal side of her right hand. She was placed on penicillin. By the end of January, the ulcer had not healed, and she was referred to a plastic surgeon. On January 30, a swab of the wound was cultured at 35°C on blood agar. On the same day, a smear was made for Gram staining. The Gram stain showed large (10 µm) cells. Brownish, waxy colonies grew on the blood agar. Slide cultures set up on February 1 and incubated at 25°C showed septate hyphae and single conidia. The most likely cause of the infection is aA) Gram-negative bacterium.B) Dimorphic fungus.C) Parasitic alga.D) Yeast.E) Protozoan.
    B
  14. Which of the following tends to be more complex in a parasitic helminth than in free-living helminths?A) Digestive systemB) Nervous systemC) LocomotionD) Reproductive systemE) All of the above are more complex in a parasitic helminth.
    D
  15. Which of the following statements is false?A) Fungi produce sexual spores.B) Fungi produce asexual spores.C) Fungal spores are used in identification of fungi.D) Fungal spores are resting spores to protect the fungus from adverse environmental conditions.E) Fungal spores are for reproduction.
    D
  16.  Which of the following pairs are mismatched? 1. Arthroconidium – formed by fragmentation 2. Sporangiospore – formed within hyphae 3. Conidiospore – formed in a chain 4. Blastoconidium – formed from a bud 5. Chlamydoconidium – formed in a sacA) 1 and 2B) 2 and 3C) 2 and 5D) 3 and 4E) 4 and 5
    C
  17. Which of the following pairs is mismatched?A) Dinoflagellates – paralytic shellfish poisoningB) Brown algae – alginC) Red algae – agarD) Diatoms – petroleumE) Green algae – prokaryotic
    E
  18. Helminthic diseases are usually transmitted to humans by A) Respiratory route.B) Genitourinary route.C) Gastrointestinal route.D) Vectors.E) Aerosols.
    C
  19. Which of the following is NOT a characteristic of parasitic platyhelminths?A) They are hermaphroditic.B) They are dorsoventrally flattened.C) They have a complete digestive system.D) They can be divided into flukes and tapeworms.E) They are multicellular animals.
    C
  20. Cercariae, metacercaria, miracidia, and rediae are stages in the life cycle ofA) Cestodes.B) Trematodes.C) Nematodes.D) Sporozoans.E) Sarcodina.
    C
  21. Which stage immediately precedes the adult?A) CercariaB) MetacercariaC) MiracidiumD) RediaE) Proglottid
    B
  22. The encysted larva of the beef tapeworm is called aA) Redia.B) Cercaria.C) Cysticercus.D) Metacercaria. E) Proglottid
    C
  23. Which of the following arthropods does NOT transmit diseases by sucking blood from a human host?A) LiceB) FleasC) HousefliesD) MosquitoesE) Kissing bugs
    C
  24. Which of the following statements about algae is false?A) They use light as their energy source.B) They use CO2 as their carbon source.C) They produce oxygen from hydrolysis of water.D) All are unicellular.E) Some are capable of sexual reproduction
    D
  25. Below are several paired items referring to the heartworm Dirofilaria immitis. Which of the pairs is mismatched?A) Dog – definitive hostB) Dog – sexual reproductionC) Mosquito – vectorD) Mosquito – definitive hostE) All of the above are correctly matched.
    D
  26. All algae areA) Photoautotrophs.B) Plants.C) Unicellular.D) Toxic.E) None of the above.
    E
  27.  A definitive host harbors which stage of a parasite?A) MiracidiumB) CystC) AdultD) LarvaE) All of the above
    C
  28. What do tapeworms eat?A) Intestinal bacteriaB) Host tissuesC) Red blood cellsD) Intestinal contentsE) Plant matter
    D
  29. The microspora and archaezoa are unusual eukaryotes because theyA) Are motile.B) Lack mitochondria.C) Lack nuclei.D) Don't produce cysts.E) Do produce cysts.
    B
  30. The life cycle of the fish tapeworm is similar to that of the beef tapeworm. Which of the following is the most effective preventive measure?A) Salting fish before eatingB) Refrigerating stored fishC) Cooking fish before eatingD) Wearing gloves while handling fishE) Not swimming in fish-infested waters
    C
  31. Which of the following is the most effective control for malaria?A) VaccinationB) Treating patientsC) Eliminate AnophelesD) Eliminate the intermediate hostE) None of the above is an effective control.
    A
  32. Multinucleated amoebalike cells that produce funguslike spores.A) AscomyceteB) Cellular slime moldC) EuglenozoaD) TapewormE) Plasmodial slime mold
    E
  33. Amoebalike vegetative structures that produce sporangia.A) AscomyceteB) Cellular slime moldC) EuglenozoaD) TapewormE) Plasmodial slime mold
    B
  34. A multicellular organism; the digestive tract has one opening.A) AscomyceteB) Cellular slime moldC) EuglenozoaD) TapewormE) Plasmodial slime mold
    D
  35. A nucleated, unicellular organism; when you change the incubation temperature, it forms filaments with conidiospores.A) AscomyceteB) Cellular slime moldC) EuglenozoaD) TapewormE) Plasmodial slime mold
    A
  36. An organism that can grow photoautotrophically in the light and chemoheterotrophically in the dark.A) OomycoteB) Cellular slime moldC) EuglenaD) PhytophthoraE) Plasmodial slime mold
    C
  37. Which of the following pairs is mismatched?A) Tick – Rocky Mountain spotted feverB) Tick – Lyme diseaseC) Mosquito – malariaD) Mosquito – PneumocystisE) Mosquito – encephalitis
    D
  38. Which of the following groups of algae does NOT produce compounds that are toxic to humans?A) DiatomsB) DinoflagellatesC) Green algaeD) Red algaeE) All of the above produce compounds toxic to humans.
    C
  39. The cells of plasmodial slime molds can grow to several centimeters in diameter becauseA) They have organelles.B) They distribute nutrients by cytoplasmic streaming.C) The large surface can absorb nutrients.D) They form spores.E) None of the above.
    B
  40. Assume you have isolated a multicellular heterotrophic organism that produces coenocytic hyphae, motile zoospores, and cellulose cell walls. It is most likely a(n)A) Ascomycete fungus.B) Green alga.C) Oomycote alga.D) Tapeworm.E) Zygomycete fungus.
    C
  41. If a larva of Echinococcus granulosus is found in humans, humans are theA) Definitive host.B) Infected host.C) Intermediate host.D) Reservoir.E) None of the above
    C
  42. Ringworm is caused by a(n)A) Ascomycete.B) Cestode.C) Nematode.D) Protozoan.E) Trematode.
    A
  43. Yeast infections are caused byA) Aspergillus.B) Candida albicans.C) Histoplasma.D) Penicillium.E) Saccharomyces cerevisiae.
    B
  44. In a food chain consisting of the following organisms, which acts as a producer?A) FungiB) LichensC) ProtozoaD) Slime molds
    B
  45. You see acid-fast oocysts in a fecal sample from a patient who has diarrhea. What is the most likely cause?A) CryptosporidiumB) DiatomsC) EntamoebaD) GiardiaE) Taenia
    A

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