Biology Quiz Paper

Question 1 of 61 C Choose the one best response to this question.
Children at day care centers in the United States have a high rate of infection with which one of the following?
A. Ascaris lumbricoides
B. Entamoeba histolytica
C. Enterobius vermicularis
D. Necator americanus

Question 2 of 61 B Choose the one best response to this question.
The main anatomic location of Schistosoma mansoni adult worms is:
A. Lung alveoli
B. Intestinal venules
C. Renal tubules
D. Bone marrow

Question 3 of 61 A Choose the one best response to this question.
Each of the following parasites has an intermediate host as part of its life cycle EXCEPT:
A. Trichomonas vaginalis
B. Taenia solium
C. Echinococcus granulosus
D.
Toxoplasma gondii

Question 4 of 61 B Choose the one best response to this question.
Which one of the following protozoa primarily infects macrophages?
A. Plasmodium vivax
B. Leishmania donovani
C. Trypanosoma cruzi
D. Trichomonas vaginalis

Question 5 of 61
A
Choose the one best response to this question.
In malaria, the form of plasmodia that is transmitted from mosquito to human is the:
A. Sporozoite
B. Gametocyte
C. Merozoite
D. Hypnozoite

Question 6 of 61 A Choose the one best response to this question.
Each of the following parasites is transmitted by flies EXCEPT:
A. Schistosoma mansoni
B. Onchocerca volvulus
C. Trypanosoma gambiense
D. Loa loa

Question 7 of 61 A Choose the one best response to this question.
Each of the following parasites is transmitted by mosquitoes EXCEPT:
A. Leishmania donovani
B. Wuchereria bancrofti
C. Plasmodium vivax
D. Plasmodium falciparum

Question 8 of 61 C Choose the one best response to this question.
Pigs or dogs are the source of human infection by each of the following parasites EXCEPT:
A. Echinococcus granulosus
B. Taenia solium
C. Ascaris lumbricoides
D. Trichinella spiralis

Question 9 of 61
A Choose the one best response to this question.
Laboratory diagnosis of a patient with a suspected liver abscess due to Entamoeba histolytica should include:
A. Stool examination and indirect hemagglutination test
B. Stool examination and blood smear
C. Indirect hemagglutination test and skin test
D. Xenodiagnosis and string test

Question 10 of 61 C Choose the one best response to this question.
Each of the following statements concerning Giardia lamblia is correct EXCEPT:
A. G. lamblia has both a trophozoite and a cyst stage in its life cycle
B. G. lamblia is transmitted by the fecal–oral route from both human and animal sources
C. G. lamblia causes hemolytic anemia
D. G. lamblia can be diagnosed by the string test in which a weighted string is swallowed into the upper GI tract.

Question 11 of 61 B Choose the one best response to this question.
Which one of the following agents is used to prevent malaria?
A. Mebendazole
B. Chloroquine
C. Inactivated vaccine
D. Praziquantel

Question 12 of 61 B Choose the one best response to this question.
Each of the following statements concerning Trypanosoma cruzi is correct EXCEPT:
A. T. cruzi is transmitted by the reduviid bug
B. T. cruzi occurs primarily in tropical Africa
C. T. cruzi can be diagnosed by seeing amastigotes in a bone marrow aspirate
D. T. cruzi typically affects heart muscle, leading to cardiac failure

Question 13 of 61 D Choose the one best response to this question.
Each of the following statements concerning Pneumocystis carinii is correct EXCEPT:
A. P. carinii infections primarily involve the respiratory tract
B. P. carinii can be diagnosed by seeing cysts in tissue
C. P. carinii infections are symptomatic primarily in immunocompromised patients
D. P. carinii symptomatic infections can be prevented by administering penicillin orally

Question 14 of 61 D Choose the one best response to this question.
Each of the following statements concerning Toxoplasma gondii is correct EXCEPT:
A. T. gondii can be transmitted across the placenta to the fetus
B. T. gondii can be transmitted by cat feces
C. T. gondii can cause encephalitis in immunocompromised patients
D. T. gondii can be diagnosed by finding trophozoites in the stool

Question 15 of 61 D Choose the one best response to this question.
Each of the following statements concerning malaria is correct EXCEPT:
A. The female Anopheles mosquito is the vector
B. Early in infection, sporozoites enter hepatocytes
C. Release of merozoites from red blood cells causes periodic fever and chills
D. The principal site of gametocyte formation is the human gastrointestinal tract

Question 16 of 61
D Choose the one best response to this question.
Each of the following statements concerning Diphyllobothrium latum is correct EXCEPT:
A. D. latum is transmitted by undercooked fish
B. D. latum has operculated eggs
C. D. latum causes a megaloblastic anemia due to vitamin B12 deficiency
D. D. latum is a tapeworm that has a scolex with a circle of hooks

Question 17 of 61 D Choose the one best response to this question.
Each of the following statements concerning hydatid cyst disease is correct EXCEPT:
A. The disease is caused by Echinococcus granulosus
B. The cysts occur primarily in the liver
C. The disease is caused by a parasite whose adult form lives in dogs' intestines
D. The disease occurs primarily in tropical Africa

Question 18 of 61 D Choose the one best response to this question.
Each of the following statements concerning Trichomonas vaginalis is correct EXCEPT:
A. T. vaginalis is transmitted sexually
B. T. vaginalis can be diagnosed by visualizing the trophozoite
C. T. vaginalis can be treated effectively with metronidazole
D. T. vaginalis causes bloody diarrhea

Question 19 of 61 C Choose the one best response to this question.
Each of the following statements concerning Schistosoma haematobium is correct EXCEPT:
A. S. haematobium is acquired by humans when cercariae penetrate the skin
B. Snails are intermediate hosts of S. haematobium
C. S. haematobium eggs have no spine
D. S. haematobium infection predisposes to bladder carcinoma

Question 20 of 61 C Choose the one best response to this question.
Each of the following statements concerning Ascaris lumbricoides is correct EXCEPT:
A. A. lumbricoides is one of the largest nematodes
B. A. lumbricoides is transmitted by ingestion of eggs
C. Both dogs and cats are intermediate hosts of A. lumbricoides
D. A. lumbricoides can cause pneumonia

Question 21 of 61 C Choose the one best response to this question.
Each of the following statements concerning sleeping sickness is correct EXCEPT:
A. Sleeping sickness is caused by a trypanosome
B. Sleeping sickness is transmitted by tsetse flies
C. Sleeping sickness can be diagnosed by finding eggs in the stool
D. Sleeping sickness occurs primarily in tropical Africa

Question 22 of 61 D Choose the one best response to this question.
Transmitted by mosquito
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 23 of 61 B Choose the one best response to this question.
Each of the following parasites is transmitted by eating inadequately cooked fish or seafood EXCEPT:
A. Diphyllobothrium latum
B. Ancylostoma duodenale
C. Paragonimus westermani
D. Clonorchis sinensis

Question 24 of 61 A Choose the one best response to this question.
Each of the following statements concerning Strongyloides stercoralis is correct EXCEPT:
A. S. stercoralis is acquired by ingestion of eggs
B. S. stercoralis undergoes a free-living life cycle in soil
C. Migrating larvae of S. stercoralis induce a marked eosinophilia
D. S. stercoralis produces filariform larvae

Question 25 of 61 B Choose the one best response to this question.
Transmitted by deer fly or mango fly
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 26 of 61 E Choose the one best response to this question.
Causes visceral larva migrans
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 27 of 61 C Choose the one best response to this question.
Each of the following statements concerning kala-azar is correct EXCEPT:
A. Kala-azar is caused by Leishmania donovani
B. Kala-azar is transmitted by the bite of sandflies
C. Kala-azar occurs primarily in rural Latin America
D. Kala-azar can be diagnosed by finding amastigotes in bone marrow

Question 28 of 61 E Choose the one best response to this question.
Acquired by ingestion of worm eggs
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 29 of 61 D Choose the one best response to this question.
Each of the following statements concerning hookworm infection is correct EXCEPT:
A. Hookworm infection can cause anemia
B. Hookworm infection is acquired by humans when filariform larvae penetrate the skin
C. Hookworm infection is caused by Necator americanus
D. Hookworm infection can be diagnosed by finding the trophozoite in the stool

Question 30 of 61 C Choose the one best response to this question.
A cestode (tapeworm) acquired by eating undercooked beef
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 31 of 61 D Choose the one best response to this question.
Causes filariasis
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 32 of 61 B Choose the one best response to this question.
A protozoan transmitted by mosquito
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 33 of 61 A Choose the one best response to this question.
Treated by extracting worm from skin ulcer
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 34 of 61 A Choose the one best response to this question.
Causes diarrhea as the most prominent symptom
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 35 of 61 C Choose the one best response to this question.
Each of the following parasites passes through the lung during human infection EXCEPT:
A. Strongyloides stercoralis
B. Necator americanus
C. Wuchereria bancrofti
D. Ascaris lumbricoides

Question 36 of 61 A Choose the one best response to this question.
A protozoan transmitted by the fecal–oral route
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 37 of 61 E Choose the one best response to this question.
A nematode (roundworm) transmitted primarily from child to child
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 38 of 61 A Choose the one best response to this question.
Acquired by drinking contaminated water
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 39 of 61 E Choose the one best response to this question.
Causes perianal itching as the most prominent symptom
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 40 of 61 E Choose the one best response to this question.
A nematode (roundworm) acquired when filariform larvae penetrate the skin
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 41 of 61 A Choose the one best response to this question.
Can be treated with mebendazole or pyrantel pamoate
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 42 of 61 C Choose the one best response to this question.
Causes cysticercosis in humans
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 43 of 61 B Choose the one best response to this question.
Can be treated with chloroquine and primaquine
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 44 of 61 C Choose the one best response to this question.
A cestode (tapeworm) acquired by eating undercooked pork
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 45 of 61 C Choose the one best response to this question.
Causes river blindness
A. Dracunculus medinensis
B. Loa loa
C. Onchocerca volvulus
D. Wuchereria bancrofti
E. Toxocara canis

Question 46 of 61 B Choose the one best response to this question.
Each of the following statements concerning trichinosis is correct EXCEPT:
A. Trichinosis is acquired by eating undercooked pork
B. Trichinosis is caused by a protozoan that has both a trophozoite and a cyst stage in its life cycle
C. Trichinosis can be diagnosed by seeing cysts in muscle biopsy specimens
D. Eosinophilia is a prominent finding

Question 47 of 61 D Choose the one best response to this question.
A trematode (fluke) acquired by eating undercooked crab meat
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 48 of 61 A Choose the one best response to this question.
A protozoan transmitted by the fecal–oral route
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 49 of 61 A Choose the one best response to this question.
Can be treated with metronidazole
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 50 of 61 D Choose the one best response to this question.
Primarily affects the biliary ducts
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 51 of 61 B Choose the one best response to this question.
A protozoan that infects red blood cells
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 52 of 61 D Choose the one best response to this question.
A trematode (fluke) acquired by eating undercooked fish
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 53 of 61 B Choose the one best response to this question.
Causes fever, chills, and anemia
A. Giardia lamblia
B. Plasmodium vivax
C. Taenia saginata
D. Clonorchis sinensis
E. Enterobius vermicularis

Question 54 of 61 D Choose the one best response to this question.
Laboratory diagnosis based on finding eggs in sputum
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 55 of 61 B Choose the one best response to this question.
Chloroquine-resistant strains occur
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 56 of 61 B Choose the one best response to this question.
Chloroquine-resistant strains occur
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 57 of 61 E Choose the one best response to this question.
Autoinfection within humans, especially in immunocompromised patients
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 58 of 61 B Choose the one best response to this question.
Causes blackwater fever
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 59 of 61 B Choose the one best response to this question.
Produces "banana-shaped" gametocytes
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 60 of 61 A Choose the one best response to this question.
Produces cysts with four nuclei
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis

Question 61 of 61 C Choose the one best response to this question.
Has a scolex with suckers and a circle of hooks
A. Entamoeba histolytica
B. Plasmodium falciparum
C. Taenia solium
D. Paragonimus westermani
E. Strongyloides stercoralis