A pulmonary fungus ball and external otomycosis and onychomycosis are all infections caused by which genera?
a. Fusarium
b. Penicillium
c. Paecilomyces
d. Aspergillus
D
Aspergillus spp. are capable of causing disseminated infection, as observed in patients who are immunocompromised, but are also capable of causing a wide variety of other types of infections, including a pulmonary or sinus fungus ball, allergic bronchopulmonary aspergillosis, external otomycosis (i.e., a fungus ball of the external auditory canal), mycotic keratitis, onychomycosis (i.e., infection of nail and surrounding tissue), sinusitis, endocarditis, and central nervous system infection. Most often, patients who are immunocompromised acquire a primary pulmonary in-fection that rapidly becomes progressive and may disseminate to virtually any organ.
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Where would you expect to find an organism possessing a cell membrane composed of large proportions of cholesterol and a predominance of unsaturated fatty acids?
A) frozen wastelands B) temperate regions C) tropical regions D) equatorial regions E) upper levels of an aquatic environment
Studies have shown that in the flowering plant Arabidopsis whether or not a root epidermal cell develops a root hair is
determined ____.
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More _____ need to be studied in order to find out whether interspecific competition strongly influences the species
composition and structure of most communities.
a. communities b. K-selected species c. r-selected species d. predators e. prey species