Microbiology Homework Questions
the human parasitic infection caused by a protozoan that enters through the nose is caused by _______. a) Naegleria fowleri b) Entoamoeba histolytica c) ballantidrium coli d) giardia intestinalis
a) Naegleria fowleri
which of these organisms has hyphae? a) a bread mold b) rotifers c) a Staphylococcus aureus bacterium an amoeboid protozoan
a) a bread mold
entamoeba histolytica, transmitted by contaminated food, grows on and in the cells lining the intestine and later within the intestinal wall. this results in dysentery. what best describes the relationship between e. hisrolytica and its host? a) it is parasitic relationship b) it is a commensalism c) it is a mutualistic relationship d) it is amensalism
a) it is parasitic relationship
A fungus that is coenocytic, is involved in food spoilage, and produces asexual spores in a sac could be ______. a) glomeromycetes b) Penicillium c) a mushroom d) Rhizopus
d) Rhizopus
the most common method of contracting a systemic mycosis is through _________. a) inhalation b) sexual contact c) person-to-person contact d) ingestion
a) inhalation
what is one feature of fungi that distinguishes them from plants? a) they can be dikaryotic b) they have cellulose cell walls c) they are capable of photosynthesis d) plants are saprotrophic heterotrophs, but fungi are not
a) they can be dikaryotic
why is it generally more difficult to effectively treat systemic fungal infections than to treat bacterial infections? a) because antibiotics are produced by fungi, they are less effective fungi b) because fungi are eukaryotes, their cells are more similar to human cells and it is harder to target the fungal cells without causing harm to human cells c) fungal infections are often on the surface of the body (e.g. ringworm) while bacterial infections are often within the body and more easily treated by oral medication d) fungi can more rapidly develop resistance to medications than bacteria can
b) because fungi are eukaryotes, their cells are more similar to human cells and it is harder to target the fungal cells without causing harm to human cells
fungi are _______. a) obtain nutrients through ingestion b) chemoorganotrophs c) chemolithotrophs d) photosynthetic
b) chemoorganotrophs
superficial mycoses are caused by a group of fungal pathogens called _______. a) dematiaceous b) dermatophytes c) dermatologic d) dimorphic
b) dermatophytes
what is the term used for the filamentous body found in many fungal species? a) gametophyte b) mycelium c) protonema d) dikaryote
b) mycelium
which of the following choices matches a hemoflagellate to its proper insect vector? a) leishmania: tsetse fly b) trypanosoma cruzi: kissing bug c) none of the listed responses is correct d) trypanosoma brucei: sandfly
b) trypanosoma cruzi: kissing bug
traditional classification of fungi by sexual spore type has been _______. a) proven incorrect by phylogenetic analysis b) upheld by phylogenetic analysis c) completely discarded by phylogenetic analysis d) modified due to phylogenetic analysis
b) upheld by phylogenetic analysis
which fungal spore type listed below is produced asexually? a) ascospore b) basidiospore c) conidiospore d) zygospore
c) conidiospore
fungi that can grow in a yeast or a mold form depending on the conditions are termed _____. a) amphimorphic b) pleomorphic c) dimorphic d) morphic
c) dimorphic
which fungal genus is correctly matched to the class of disease it causes? a) superficial mycosis: Aspergillus b) subcutaneous mycosis: Microsporum c) systemic mycosis: Canidia d) systemic mycosis: Sporothrix
c) systemic mycosis: Canidia
The phylum Ascomycota contains ________. a) single-celled yeast b) filamentous fungi c) fungi that can produce asexual spores that are not contained in a sac d) all of the listed organisms
d) all of the listed organisms (single-celled yeast, filamentous fungi, fungi that can produce asexual spores that are not contained in a sac)