Biology ยท 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

Multiple choice

Which parasite causes trichuriasis?

  1. Trichuris trichiura

  2. Ascaris lumbricoides

  3. Enterobius vermicularis

  4. Necator americanus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Trichuriasis is caused by Trichuris trichiura, a nematode parasite transmitted through contaminated soil.

Multiple choice

What is the causative agent of ascariasis?

  1. Trichuris trichiura

  2. Ascaris lumbricoides

  3. Enterobius vermicularis

  4. Necator americanus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ascariasis is caused by Ascaris lumbricoides, a nematode parasite transmitted through contaminated soil.

Multiple choice

Which parasite causes enterobiasis?

  1. Trichuris trichiura

  2. Ascaris lumbricoides

  3. Enterobius vermicularis

  4. Necator americanus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Enterobiasis is caused by Enterobius vermicularis, a nematode parasite transmitted through direct contact with an infected person or through contaminated objects.

Multiple choice

What is the causative agent of hookworm infection?

  1. Trichuris trichiura

  2. Ascaris lumbricoides

  3. Enterobius vermicularis

  4. Necator americanus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hookworm infection is caused by Necator americanus, a nematode parasite transmitted through contaminated soil.

Multiple choice

Which parasite causes schistosomiasis?

  1. Schistosoma mansoni

  2. Schistosoma haematobium

  3. Schistosoma japonicum

  4. Schistosoma intercalatum
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Schistosomiasis is caused by Schistosoma mansoni, Schistosoma haematobium, Schistosoma japonicum, and Schistosoma intercalatum, trematode parasites transmitted through contact with contaminated water.

Multiple choice

What is the causative agent of filariasis?

  1. Wuchereria bancrofti

  2. Brugia malayi

  3. Onchocerca volvulus

  4. Loa loa
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Filariasis is caused by Wuchereria bancrofti, Brugia malayi, Onchocerca volvulus, and Loa loa, nematode parasites transmitted by mosquitoes, black flies, and deer flies.

Multiple choice

Which of the following is an example of a vector-borne disease?

  1. Influenza

  2. HIV/AIDS

  3. Malaria

  4. Tuberculosis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Malaria is transmitted through the bites of infected mosquitoes, making it a vector-borne disease.

Multiple choice

Which of the following foods is most commonly associated with Listeria contamination?

  1. Soft cheeses

  2. Hot dogs

  3. Deli meats

  4. Raw milk
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soft cheeses are the most commonly associated with Listeria contamination, as the bacteria can grow in the cheese.

Multiple choice

Which of the following foods is most commonly associated with Campylobacter contamination?

  1. Poultry

  2. Unpasteurized milk

  3. Raw eggs

  4. Raw shellfish
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Poultry is the most commonly associated with Campylobacter contamination, as the bacteria can be present in the meat.

Multiple choice

What is the name of the protist that causes malaria?

  1. Euglena

  2. Amoeba

  3. Paramecium

  4. Plasmodium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plasmodium is the name of the protist that causes malaria.

Multiple choice

How is malaria transmitted?

  1. Through contact with an infected person.

  2. Through contact with an infected animal.

  3. Through contact with an infected mosquito.

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Malaria is transmitted through contact with an infected mosquito.

Multiple choice

Which of the following is an example of a meta-analysis in experimental epidemiology?

  1. A study that combines the results of multiple randomized controlled trials to provide a more precise estimate of the effect of an intervention

  2. A study that compares the results of different observational studies to identify risk factors for a disease

  3. A study that investigates the natural history of a disease

  4. A study that evaluates the effectiveness of a public health policy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A meta-analysis is a statistical technique that combines the results of multiple studies to provide a more precise estimate of the effect of an intervention or the association between an exposure and an outcome.

Multiple choice

Which of the following is a tapeworm?

  1. Taenia solium

  2. Fasciola hepatica

  3. Dugesia tigrina

  4. Schistosoma mansoni
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Taenia solium is a tapeworm that can cause taeniasis in humans.

Multiple choice

Which of the following is a fluke?

  1. Taenia solium

  2. Fasciola hepatica

  3. Dugesia tigrina

  4. Schistosoma mansoni
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Fasciola hepatica is a fluke that can cause fascioliasis in humans and animals.

Multiple choice

Which of the following is a planarian?

  1. Taenia solium

  2. Fasciola hepatica

  3. Dugesia tigrina

  4. Schistosoma mansoni
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Dugesia tigrina is a planarian that is commonly found in freshwater habitats.