Multiple Choice Questions

Which of the following is the most effective control for malaria? -eliminate the intermediate host -treating patients -eliminate Anopheles -vaccination - None of these is an effective control.
  • All are parasites.
  • mosquito - Pneumocystis
  • eliminate Anopheles
  • All are unicellular.
Which of the following statements about helminths is FALSE? -All are parasites. -They are multicellular animals. - They have eukaryotic cells. -They are heterotrophic. -Some have male and female reproductive organs in one animal.
  • green algae - prokaryotic
  • All are parasites.
  • All are unicellular.
  • Nearly all protozoa cause disease.
The insect vectors have six legs and include ticks, mosquitoes, and lice.
  • True
  • False
Yeast infections are caused by
  • Candida albicans
  • Intestinal contents
  • lack mitochondria
  • gastrointestinal route
In the table, which of these spores are characteristic of Penicillium?
  • Fungus
  • True
  • Adult
  • 2 and 6
In the malaria parasite life cycle
  • 2 and 6
  • cooking fish before eating
  • they distribute nutrients by cytoplasmic streaming.
  • humans are the intermediate host and mosquitoes are both the definitive host and the vector.
The sporozoite, merozoite, gametocyte, and ring stages are all part of the Plasmodium life cycle.
  • True
  • False
The life cycle of the fish tapeworm is similar to that of the beef tapeworm. Which of the following is the most effective preventive measure?
  • humans are the intermediate host and mosquitoes are both the definitive host and the vector.
  • green algae - prokaryotic
  • cooking fish before eating
  • cellular slime mold
Which of the following statements regarding fungi is FALSE? - Fungi are eukaryotic heterotrophs. - Fungi tolerate low moisture conditions. -Most fungi grow well in acidic culture condition. -Most fungi are pathogenic for humans. -Fungi reproduce by forming asexual or sexual spores.
  • Fungal spores are highly resistant to heat and chemical agents.
  • Lichens are very tolerant to pollution.
  • Most fungi are pathogenic for humans.
  • Nearly all protozoa cause disease.
What do tapeworms eat?
  • Intestinal contents
  • eliminate Anopheles
  • lack mitochondria
  • Candida albicans
Both the cellular slime molds and the plasmodial slime molds are members of the phylum Amoebozoa.
  • True
  • False
Helminthic diseases are usually transmitted to humans by
  • Candida albicans
  • gastrointestinal route
  • mosquito - Pneumocystis
  • Intestinal contents
Which of the following pairs is mismatched? - green algae - prokaryotic -dinoflagellates - paralytic shellfish poisoning -diatoms - petroleum -brown algae - algin -red algae - agar
  • green algae - prokaryotic
  • cestodes all are free-living
  • eliminate Anopheles
  • mosquito - Pneumocystis
In mid-December, a woman with insulin-dependent diabetes who had been on prednisone fell and received an abrasion on the dorsal 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°C on blood agar. On the same day, a smear was made for Gram staining. The Gram stain showed large (10 µm) cells. Brownish, waxy colonies grew on the blood agar. Slide cultures set up on February 1 and incubated at 25°C showed septate hyphae and single conidia. The most likely cause of the infection is a
  • cooking fish before eating
  • False
  • humans are the intermediate host and mosquitoes are both the definitive host and the vector.
  • Dimorphic Fungus
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,
  • humans are the definitive host and crayfish are the intermediate host.
  • Lichens are very tolerant to pollution.
  • they are a symbiotic relationship of a fungus and a protozoan.
  • Fungal spores are highly resistant to heat and chemical agents.
All of the following are characteristic of algae EXCEPT -they are classified as plants. -some produce harmful toxins. -they mostly live in aquatic habitats. - most are photoautotrophs. -they may be unicellular or multicellular.
  • Nearly all protozoa cause disease.
  • All are parasites.
  • they are classified as plants.
  • cestodes all are free-living
Which of the following pairs is mismatched? -mosquito - encephalitis -tick - Rocky Mountain spotted fever -tick - Lyme disease -mosquito - malaria - mosquito - Pneumocystis
  • cestodes all are free-living
  • All are unicellular.
  • Most fungi are pathogenic for humans.
  • mosquito - Pneumocystis
You observe a mass of amboeba-like cells that swarm together, form a stalk, and produce spores. This is a(n)
  • eliminate Anopheles
  • mosquito - Pneumocystis
  • All are unicellular.
  • cellular slime mold
Which of the following statements regarding lichens is FALSE? -Lichens are often the first life form to colonize rock or soil. - Lichens are very tolerant to pollution. -Lichens represent a mutualistic relationship between a fungus and an alga. -The fungal partner provides a means of attachment and protects the algal partner from desiccation. -The algal partner produces carbohydrates that are absorbed by the fungal partner.
  • Nearly all protozoa cause disease.
  • Most fungi are pathogenic for humans.
  • coenocytic hyphae hyphae with cross-walls
  • Lichens are very tolerant to pollution.
Some species of dinoflagellates produce neurotoxins that cause fish kills and red tides.
  • True
  • False
Which of the following arthropods does NOT transmit diseases by sucking blood from a human host? -lice -deer flies -mosquitoes -houseflies -fleas
  • houseflies
  • ascomycete
  • mosquito - Pneumocystis
  • All are unicellular.
Giardia and Trichomonas are unusual eukaryotes because they
  • lack mitochondria
  • Intestinal contents
  • Candida albicans
  • cellular slime mold
Most cases of hookworm infection are acquired by ingestion of eggs in contaminated food or water.
  • True
  • False
Which of the following statements regarding protozoa is FALSE? -Some protozoan pathogens are transmitted by arthropod vectors. -Protozoa are unicellular eukaryotes. -Most protozoa reproduce asexually. -Protozoa are common in water and soil. - Nearly all protozoa cause disease.
  • All are parasites.
  • Nearly all protozoa cause disease.
  • cestodes all are free-living
  • Most fungi are pathogenic for humans.
Which of the following pairs is mismatched? -trematodes flukes -nematodes many are free-living -cestodes all are free-living -nematodes complete digestive tract -cestodes segmented body made of proglottids
  • Nearly all protozoa cause disease.
  • cestodes all are free-living
  • All are parasites.
  • Most fungi are pathogenic for humans.
Ringworm is caused by a(n)
  • 2 and 6
  • Fungus
  • True
  • False
All of the following are characteristic of lichens EXCEPT - they serve as primary producers in rocky ecosystems. -they are used as indicators of air pollution. -they are arranged in foliose, fruticose, or crustose morphologies. -they are a major food source for tundra herbivores. -they are a symbiotic relationship of a fungus and a protozoan.
  • they are classified as plants.
  • Fungal spores are highly resistant to heat and chemical agents.
  • they are a symbiotic relationship of a fungus and a protozoan.
  • Lichens are very tolerant to pollution.
The cells of plasmodial slime molds can grow to several centimeters in diameter because
  • True
  • they are classified as plants.
  • they are a symbiotic relationship of a fungus and a protozoan.
  • they distribute nutrients by cytoplasmic streaming.
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Multiple Choice Questions
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