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MCB 2010 # 2 Study Guide COMPLETE 56-182.
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- NUR 240 EXAM 2 Practice Questions.
MCB 2010 # 2 Study Guide COMPLETE 56-182.
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MCB 2010 # 2 Study Guide COMPLETE56-182
56) Which of the following statements regarding fungi is FALSE?
A) Most fungi are pathogenic for humans.
B) Fungi are eukaryotic heterotrophs.
C) Fungi reproduce by forming asexual or sexual spores.
D) Most fungi grow well in acidic culture condition. E) Fungi tolerate low moisture
conditions. - ANS-A) Most fungi are pathogenic for humans.
57) 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. - ANS-D) All are
parasites.
58) 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. - ANS-D) They have chlorophyll.
59) Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus.
In all seventeen 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
because they
A) are aerobic.
B) can tolerate low-moisture conditions.
C) prefer a neutral environment (pH 7).
D) have a fermentative metabolism.
E) cannot tolerate high osmotic pressure. - ANS-B) can tolerate low-moisture
conditions.
,60) Which of the following statements regarding lichens is FALSE? A) Lichens are a
mutualistic relationship between a fungus and a protozoan.
B) Lichens represent a mutualistic relationship between a fungus and an alga.
C) Lichens are often the first life form to colonize rock or soil.
D) The algal partner produces carbohydrates that are absorbed by the fungal partner.
E) The fungal partner provides a means of attachment and protects the algal partner
from desiccation. - ANS-A) Lichens are a mutualistic relationship between a fungus and
a protozoan.
61) Which of the following pairs is mismatched?
A) Basidiomycota — basidiospores
B) Ascomycota — conidiospores
C) Zygomycota — sporangiospores
D) microsporidia — lack mitochondria
E) anamorphs — lack spores - ANS-E) anamorphs — lack spores
62) In Table 12.1, which of these spores are characteristic of Penicillium?
A) 1 and 2
B) 3 and 4
C) 2 and 6
D) 1 and 4
E) 4 and 6 - ANS-C) 2 and 6
63) In Table 12.1, which of these spores are characteristic of Rhizopus?
A) 1 and 2
B) 6 and 7
C) 2 and 8
D) 1 and 4
E) 7 and 8 - ANS-E) 7 and 8
64) In Table 12.1, which is a thick-walled spore formed as a segment within a hypha?
A) 1
B) 3
C) 5
D) 7
E) None of the answers is correct. - ANS-B) 3
65) In Table 12.1, which of these spores are asexual spores?
A) 1, 4, 5, 6, 7
, B) 2, 3, 6, 8
C) 1, 3, 5, 8
D) 2, 4, 6, 7, 8
E) All of the spores are asexual. - ANS-A) 1, 4, 5, 6, 7
66) Which of the following pairs is mismatched?
A) teleomorph — produces both sexual and asexual spores
B) dermatomycosis — fungal infection of the skin
C) dimorphic fungus — grows as a yeast or a mold
D) systemic mycosis — fungal infection of body organs
E) coenocytic hyphae — hyphae with cross-walls - ANS-E) coenocytic hyphae —
hyphae with cross-walls
67) Which of the following statements regarding protozoa is FALSE?
A) Protozoa are unicellular eukaryotes.
B) Nearly all protozoa cause disease.
C) Most protozoa reproduce asexually.
D) Protozoa are common in water and soil.
E) Some protozoan pathogens are transmitted by arthropod vectors. - ANS-B) Nearly all
protozoa cause disease.
68) 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 a ****
A) gram-negative bacterium.
B) dimorphic fungus.
C) parasitic alga.
D) yeast.
E) protozoan. - ANS-B) dimorphic fungus.
69) Which of the following tends to be more complex in a parasitic helminth than in
free-living helminths?
A) digestive system
B) nervous system
C) reproductive system
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