chapter 10 micro quiz

in table 12.1 which of these spores are asexual spores?

1,4,5,6,7

which of the following is mismatched? a.dinoflagellates- paralytic shellfish poisoning b.brown algae-algin c.red algae-agar d.diatoms-petroleum e.green algae- prokaryotic

green algae-prokaryotic

in the microscope, you observe multi-nucleated amoeboid cells with sporangia that form spores. This is a(n)...

plasmoidal slime mold

arthropod vectors are blood-sucking animals such as ticks, lice, and fleas that transmit microbial pathogens

true

both the cellular slime molds and the plasmodial slime molds are members of the phylum amoebozoa

true

cercariae, metacercaria, redia, and sorocysts are all life cycle stages of trematodes

true

plasmogamy, karyogamy, and meiosis are stages of the funagal sexual life cycle.

true

sone species of dinoflagellates produce neurotoxins that cause fish kills and red tides

true

the sporozoite, merozoite, gametocyte, and ring stages are all part of the plasmodium life cycle

true

which of the following organisms is photoautotrophic protozoan?

Euglena

a definitive host harbors which stage of parasite?

adult

which of the following statements about algae is FALSE

all are unicellular

you see acid-fast oocysts in a fecal sample from a patient who has diarrhea. What is the MOST likely cause?

cryptosporidium

in mid-december, a woman with insulin-dependent diabetes who had been on prednisone fell and receieved an abrasion on the doral side of her right hand. She was placed on penicillin. By the end of January, the ulcer had not healed, and she was referred to a plastic surgeon. On January 30, a swab of the wound was cultured at 35 degree Celsius on blood agar. On the same day, a smear was made for gram staining. The gram stain showed large (10 um) cells. Brownish, waxy conlonies grew on the blood agar. Slide cultures set up on February 1 and incubated at 25 degree Celsius showed septate hyphae and single conidia. The most likely cause of the infection is a...

dimophoric fungus

which of the following is the most effective control for malaria?

eliminate anopheles

Which of the following pairs are mismatched? a.arthroconidium - formed by fragmentation b.sporangiospore-formed within hyphae c.condiospore- formed in chain d.blastoconidium- formed from a bud e.chlamydoconidium- formed in a sac

2 and 5 sporangiospore-formed within the hyphae chlamydconidium-formed in the sac

In table 12.1, which of these spores are characteristic of Penicillium

2 and 6

in table 12.1 which is a thick-walled spore forming as a segment within a hypha

5

In table 12.1 which of these spores are a characteristic of Rhizopus?

7 and 8

which of the following pairs is mismatched?

anamorphs- lack spores

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

ascomycete

seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all seventeen patients, Elastoplast bandages were placed over sterile gauze pads to cover wounds. Fourteen of the patients had surgical wounds, two had venous line insertions sites, and one had a bite wound. Lesions present when the bandages were removed ranged from vesiculopustular eruptions to ulcerations and skin necrosis requiring debridement. Fungi are more likely than bacteria to contaminate bandages because they...

can tolerate low-moisture conditions

yeast infections are caused by

candida ablicans

you observe a mass of amboeba-like cells that swarm together, from a stalk, and produce spores. This is a(n)...

cellular slime mold

which of the following pairs is mismatched

coenocytic hyphae- hyphae with cross walls

which of the following groups of algae does NOT produce compounds that are toxic to humans?

green algae

in helminth life cycles, the organism that harbors the sexually reproductive phase of the parasite is called the intermediate host.

false

most cases of hookworm infection are aquired by ingestion of eggs in contaminated food or water

false

the insect vectors have six legs and include ticks, misquitos, and lice

false

the playhelminths group includes roundworms, tapeworms, and flukes

false

which of the following statements is FALSE? a. fungi produce sexual spores b.fungi produce asexual spores c.fungal spores are used in identification of fungi d.fungal spores are highly resistant to heat and chemical agents e.fungal spores are for asexual or sexual reproduction

fungal spores are highly resistant to heat and chemical agents

ringworm is caused by a(n)

fungus

which of the following anthropods does NOT transmit diseases by sucking blood from a human host?

houseflies

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 parizquantel. In the PARAGONIMUS life cycle...

humans are the definitive host and crayfish are the intermediate host

in the malaria parasite life cycle

humans are the intermediate host and mosquitoes are both the definitive host and the vector

If a larva of Echinococcus granulosus is founf in humans, humans are the

intermediate host

Giardia and Trichnomonas are unusual eukaryotes because they

lack mitochondria

which of the following statements regarding lichens is FALSE

lichens are very tolerant to pollution

which of the following pairs is mismatched?

mosquito-pseumocytis

which of the following statements regarding fungi is FALSE

most fungi are pathogenic for humans

which of the following statements regarding protozoa is FALSE

nearly all protozoa cause disease

Assume you have isolated a multicellular heterotrophic organism that produces coenocytic hyphae, motile zoospores, and cellulose cell walls. it is most likely a(n)...

oomycote alga

all of the following are characteristic of lichens EXCEPT

they are a symbiotic relationship for a fungus and a protozoan

all of the following are characteristic of algae EXCEPT...

they are classified as plants

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

they distribute nutrients by cytoplasmic streaming

which of the following statements about the oomycote algae is FALSE

they have chlorophyll