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)