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Ringworm is caused by a(n)


A) fungus.
B) cestode.
C) nematode.
D) protozoan.
E) trematode.

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Which of the following arthropods does NOT transmit diseases by sucking blood from a human host?


A) lice
B) fleas
C) houseflies
D) mosquitoes
E) kissing bugs

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The sporozoite,merozoite,gametocyte,and ring stages are all part of the Plasmodium life cycle.

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Which of the following pairs is mismatched?


A) Basidiomycota - basidiospores
B) Ascomycota - conidiospores
C) Zygomycota - sporangiospores
D) microsporidia - lack mitochondria
E) anamorphs - lack spores

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The cells of plasmodial slime molds can grow to several centimeters in diameter because


A) they have organelles.
B) they distribute nutrients by cytoplasmic streaming.
C) the large surface can absorb nutrients.
D) they form spores.
E) they have a mouth to ingest nutrients.

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West Nile Virus is transmitted by mosquitoes as they take a blood meal.Flies can also transmit pathogens,but not in the process of taking a blood meal.Differentiate the ways in which flies and mosquitoes acquire and transmit infectious agents,and suggest 1-2 ways in which these methods might be disrupted.

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Mosquitoes acquire and transmit infectio...

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You observe a mass of amoeba-like cells that swarm together,form a stalk,and produce spores.This is a(n)


A) ascomycete.
B) cellular slime mold.
C) Euglenozoa.
D) tapeworm.
E) plasmodial slime mold.

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All of the following are characteristic of algae EXCEPT which ONE of the following?


A) Most are photoautotrophs.
B) They are currently classified as plants.
C) They may be unicellular or multicellular.
D) Some produce harmful toxins.
E) They mostly live in aquatic habitats.

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All of the following are characteristic of lichens EXCEPT


A) they are arranged in foliose,fruticose,or crustose morphologies.
B) they are a major food source for tundra herbivores.
C) they are used as indicators of air pollution.
D) they are a symbiotic relationship between a fungus and a protozoan.
E) they serve as primary producers in rocky ecosystems.

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Which of the following pairs is mismatched?


A) teleomorph - produces both sexual and asexual spores
B) dermatomycosis - fungal infection of the skin
C) dimorphic fungus - grows as a yeast or a mold
D) systemic mycosis - fungal infection of body organs
E) coenocytic hyphae - hyphae with cross-walls

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Explain how the presence of algae can indicate either pollution or productivity of a body of water.

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Algae can indicate the pollution or prod...

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Which of the following is a nucleated,unicellular organism that,if you changed the incubation temperature,would form filaments with conidiospores?


A) ascomycete
B) cellular slime mold
C) euglenozoa
D) tapeworm
E) plasmodial slime mold

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Which of the following pairs are mismatched? 1.arthroconidium - formed by fragmentation 2) sporangiospore - formed within hyphae 3) conidiospore - formed in a chain 4) blastoconidium - formed from a bud 5) chlamydoconidium - formed in a sac


A) 1 and 2
B) 2 and 3
C) 2 and 5
D) 3 and 4
E) 4 and 5

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Provide an explanation for the complex life cycles exhibited by parasitic helminths.Cite specific examples in your explanation.

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Parasitic helminths, which include vario...

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Three weeks after a river rafting trip,three family members experienced symptoms of coughing,fever,and chest pain.During the rafting trip,the family had consumed crayfish that they caught along the river banks.An examination of the patients' sputum revealed helminth eggs,and serum samples were positive for antibodies to Paragonimus.All of the family members recovered following treatment with praziquantel.In the Paragonimus life cycle,


A) the crayfish are the definitive host and humans are the intermediate host.
B) humans are the definitive host and crayfish are the intermediate host.
C) both humans and crayfish are intermediate hosts.
D) both humans and crayfish are definitive hosts.
E) the source of the infection was the river water.

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Helminthic diseases are usually transmitted to humans by


A) respiratory route.
B) genitourinary route.
C) gastrointestinal route.
D) vectors.
E) aerosols.

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Which of the following statements regarding fungi is FALSE?


A) Most fungi are pathogenic for humans.
B) Fungi are eukaryotic heterotrophs.
C) Fungi reproduce by forming asexual or sexual spores.
D) Most fungi grow well in acidic culture condition.
E) Fungi tolerate low moisture conditions.

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Slime molds are not molds.Based on their life cycles and processes,why do you think they were originally given this incorrect name?

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Slime molds were originally given the na...

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Which of the following statements regarding protozoa is FALSE?


A) Protozoa are unicellular eukaryotes.
B) Nearly all protozoa cause disease.
C) Most protozoa reproduce asexually.
D) Protozoa are common in water and soil.
E) Some protozoan pathogens are transmitted by arthropod vectors.

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Which of the following pairs is mismatched?


A) nematodes - complete digestive tract
B) cestodes - segmented body made of proglottids
C) trematodes - flukes
D) nematodes - many are free-living
E) cestodes - all are free-living

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