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MCB2010C FINAL EXAM_ PRACTICE
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- NUR 240 EXAM 2 Practice Questions.
MCB2010C FINAL EXAM_ PRACTICE
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MCB2010C FINAL EXAM: PRACTICEA primary difference between cyanobacteria and purple and green phototrophic bacteria
is: - ANS-Electron donor for CO2 reduction.
Antibiotics can lead to septic shock if used to treat: - ANS-Gram-negative bacterial
infections.
Antigenic stimulation of a particular B cell that results in the production of a large
number of plasma and memory cells, all capable of responding to that antigen, is
referred to as - ANS-clonal selection
Assume you have isolated an unknown virus. It is a single-stranded RNA, enveloped
virus. To which group does it most likely belong? - ANS-Togavirus
Complement components C5 through C9 form plasma membrane channels in cellular
microbes referred to as the: - ANS-MEMBRANE ATTACK COMPLEX
Defensive cells such as macrophages and dendritic cells have __________ receptors
on their surfaces that bind to molecular components on the surfaces of invading
microorganisms. - ANS-TOLL LIKE
Generally, in a DNA-containing virus infection, the host animal cell supplies all of the
following EXCEPT - ANS-DNA polymerase.
Generally, in a DNA-containing virus infection, what does the host animal cell supply? -
ANS-ALL OF THESE:
1- RNA polymerase.
2- Nucleotides.
3- tRNA.
Haemophilus bacteria require heme protein produced by Staphylococcus bacteria. This
is an example of - ANS-Synergism
In a food chain consisting of the following organisms, which acts as a producer? -
ANS-Lichens
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 - ANS-Dimorphic fungus
Multinucleated amoebalike cells that produce funguslike spores are called: -
ANS-Plasmodial slime mold
Opsonization is the process of enhancement of phagocytosis by coating the bacteria
with: - ANS-C 3 B
Patients developed inflammation a few hours following eye surgery. Instruments and
solutions were sterile, and the Limulus assay was positive. The patients' inflammation
was due to: - ANS-Endotoxin
Salmonella, Shigella, Yersinia, and Serratia are all - ANS-Gram-negative facultatively
anaerobic rods.
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 because: -
ANS-They can tolerate low-moisture conditions.
Siderophores are bacterial proteins that compete with animal - ANS-Transferrin
Similarities between cyanobacteria and purple and green phototrophic bacteria are: -
ANS-1- Energy source.
2- Cell wall type.
3- Cell type.
4- Color.
T/F? A drug that inhibits translation at 70S ribosomes can be used to treat human viral
infections. - ANS-False
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