問題一覧
1
Specialized discipline in the field of biology concerned with the study of fungi, including their taxonomy, environmental impact, and genetic and biochemical properties
Mycology
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Valid species of fungi exist
200,000
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Valid species of fungi exist
200,000
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Species are generally recognized as causes of human disease
100 to 150
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Species cause most human disease.
25
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Most species of fungi are beneficial to humankind.
True
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Some fungi greatly enhance our quality of life by contributing to the production of food and spirits, including?
cheese, bread, and beer
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Other fungi have served medicine by providing useful bioactive secondary metabolites such as?
antibiotics , immunosuppressive drugs
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antibiotics
penicillin
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immunosuppressive drugs
cyclosporine
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Constitute an extremely diverse group of organisms and are generally classified as molds or yeasts.
Fungi
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Fungi have been recognized as classic?
Pathogens
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Living on nonliving material
Saprobes
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Fungi can cause?
mild infections, trigger allergic reactions, asthma, produce serious life-threatening disease
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Are eukaryotic; they possess a true nucleus, with a nuclear membrane and mitochondria.
Fungi
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Are prokaryotic, lacking specific structures.
Bacteria
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Unlike plants, ________ lack chlorophyll and must absorb nutrients from the environment.
Fungi
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Fungal cell walls are made of?
Chitin
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Fungi's are what type of aerobes?
Obligate aerobes
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Fungi grow best at a ________, although they tolerate a wide pH range
Neutral pH
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Necessary for growth of fungi, but spores and conidia survive in dry conditions for extended lengths of time
Moisture
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Survive in dry conditions for extended lengths of time.
Spores and Conidia
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Produce moist, creamy, opaque or pasty colonies on media
Yeasts
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Produce fluffy, cottony, woolly, or powdery colonies
Filamentous fungi or molds
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Can reproduce asexually (imperfect) or sexually (perfect)
Fungi
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Asexual reproduction results in the formation of?
Conidia
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Reproduction requires the joining of two compatible nuclei, followed by meiosis
Sexual
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Results in the formation of conidia (singular, conidium; asexual spores) following mitosis.
Asexual reproduction
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Another form of asexual reproduction, are formed by fragmentation of fertile hyphae.
Athroconidia
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Sexual reproduction occurs by the fusion of compatible nuclei and subsequent production of a?
Zygospore
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The cell membrane consists of?
Ergosterol
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Lacks chlorophyll because it absorbs nutrients from environment
True
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Most of the Fungi are?
Obligates Aerobes
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Fungi's are non-motile/motile?
Non-motile
35
Fungi produce:
Filamentous structures , Spores