Biology · General Awareness
Disease Vectors and Pathogens
844 Questions
Disease vectors and pathogens examine how organisms like Plasmodium and Leishmania transmit infections. Test items require matching vectors to specific diseases. Studying these life cycles is essential for scoring well.
Plasmodium infective stagesDisease transmission modesDisease vectors and fleasIntracellular parasitesElephantiasis causes
Disease Vectors and Pathogens Questions
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house fly
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mosquito
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honey bee
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tse-tse fly
D
Correct answer
Explanation
Trypanosoma brucei, the causative agent of African sleeping sickness, is transmitted to humans by the bite of an infected tsetse fly (Glossina).
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sand fly
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glossina palpalis
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fruit fly
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ticks
B
Correct answer
Explanation
Sleeping sickness is transmitted by the tsetse fly, which belongs to the genus Glossina (e.g., Glossina palpalis).
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sleeping sickness
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chagas disease
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kala azar
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Both (1) and (2)
A
Correct answer
Explanation
Trypanosoma gambiense is the causative agent of West African sleeping sickness.
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Ascorbic acid
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ATS
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Chloroquine
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BCG
C
Correct answer
Explanation
Chloroquine is a well-known antimalarial medication used to prevent and treat malaria.
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sand fly
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culex mosquito
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anophilous mosquito
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tse tse fly
B
Correct answer
Explanation
Culex mosquito transmit filariasis.
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AIDS
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Ringworm
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Malaria
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Typhoid
C
Correct answer
Explanation
Malaria is a disease caused by Plasmodium parasites, which are protozoa. AIDS is viral, ringworm is fungal, and typhoid is bacterial.
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AIDS
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Ringworm
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Malaria
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Typhoid
B
Correct answer
Explanation
Ringworm is a common fungal infection of the skin. AIDS is viral, malaria is caused by a protozoan, and typhoid is a bacterial infection.
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bacteria
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mosquitoes
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protozoa
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virus
B
Correct answer
Explanation
Filariasis is a parasitic disease caused by microscopic, thread-like worms, which are transmitted to humans through the bites of infected mosquitoes.
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Malaria
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Influenza
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Polio
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AIDS
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Typhoid
A
Correct answer
Explanation
This is the correct option, as malaria is caused by a protozoa called Plasmodium.
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Cholera
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Tuberculosis
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Typhoid
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Polio
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Diarrhoea
D
Correct answer
Explanation
This is the correct option. Polio, which is a serious disease that affects the nerves of the spine and often makes a person permanently unable to move, is not spread by a housefly.
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encephalitis
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dengue fever
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yellow fever
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filariasis
D
Correct answer
Explanation
It is a serious concern that malaria can go on to spread far and wide because when an Anopheles is contaminated with malaria, it stays within it for life and this infects all those that it bites. It is found that the malaria infected Anopheles mosquito has more appetite than an uninfected mosquito. This makes the potential spread of malaria. Other than spreading malaria, Anopheles mosquitoes are also vectors of Filariasis which is a disease caused by nematodes in the blood or tissues of the body causing blockage of lymphatic vessels.
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ascaris
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leech
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earthworm
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nereis
B
Correct answer
Explanation
Leeches are 'worms' with suckers on each end. Leeches can range in size from one centimeter to over 25 centimeters long. They are brown or black in colour. Some feed on decaying plant material. Others are parasites, feeding on blood and tissue of other animals. Blood-sucking leeches suck your blood in two ways: they use a proboscis to puncture your skin, or they use their three mouths and millions of little teeth.
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male anopheles
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female anopheles
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micro anopheles
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macro anopheles
B
Correct answer
Explanation
Malaria is transmitted to humans through the bite of an infected female Anopheles mosquito. Male mosquitoes feed on plant nectar and do not bite humans.
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Candida tropicalis
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Candida lusitaniae
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Candida parapsilosis
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Candida guilliermondii
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Candida norvegensis
E
Correct answer
Explanation
Candida norvegensis is a very rare clinical isolate that has been reported as a causative agent of peritonitis, and disseminated candidiasis in a patient on CAPD.
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Rabies
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AIDS
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Malaria
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Cholera
C
Correct answer
Explanation
Names of diseases caused by protozoa include malaria, diarrhea, dysentery and colitis.