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 of the following nematodes is responsible for loiasis?

  1. Wuchereria bancrofti

  2. Brugia malayi

  3. Loa loa

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

Loa loa is a nematode that causes loiasis, a parasitic infection that can lead to swelling of the eyes, joints, and skin.

Multiple choice

Which of the following nematodes is responsible for onchocerciasis?

  1. Wuchereria bancrofti

  2. Brugia malayi

  3. Loa loa

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

Onchocerca volvulus is a nematode that causes onchocerciasis, a parasitic infection that can lead to blindness, skin problems, and disfigurement.

Multiple choice

Which of the following nematodes is responsible for dracunculiasis?

  1. Wuchereria bancrofti

  2. Brugia malayi

  3. Loa loa

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

Dracunculus medinensis is a nematode that causes dracunculiasis, a parasitic infection that can lead to painful swelling and ulceration of the skin.

Multiple choice

Which of the following nematodes is responsible for angiostrongyliasis?

  1. Angiostrongylus cantonensis

  2. Angiostrongylus costaricensis

  3. Angiostrongylus malaysiensis

  4. Angiostrongylus vasorum
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Angiostrongylus cantonensis is a nematode that causes angiostrongyliasis, a parasitic infection that can occur when raw or undercooked snails or slugs containing the larvae are consumed.

Multiple choice

Which type of drug is often associated with the Andean region of South America?

  1. Heroin

  2. Cocaine

  3. Cannabis

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

The Andean region of South America, particularly Colombia, Peru, and Bolivia, is known for its illicit production and trafficking of cocaine.

Multiple choice

Which vector-borne disease is NOT significantly influenced by climate change?

  1. Malaria

  2. Dengue

  3. Lyme disease

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

Lyme disease is primarily transmitted by ticks, which are not directly affected by climate change. Malaria, dengue, and yellow fever, on the other hand, are transmitted by mosquitoes, which are sensitive to changes in temperature and precipitation.

Multiple choice

Which of the following is a parasite that causes malaria?

  1. Plasmodium falciparum

  2. Trypanosoma cruzi

  3. Leishmania donovani

  4. Toxoplasma gondii
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plasmodium falciparum is a parasite that is the most common cause of malaria.

Multiple choice

Which vector-borne disease is responsible for the highest number of deaths worldwide?

  1. Malaria

  2. Dengue

  3. Yellow Fever

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

Malaria is the deadliest vector-borne disease, causing an estimated 409,000 deaths in 2019.

Multiple choice

What is the name of the parasite that causes malaria?

  1. Plasmodium falciparum

  2. Plasmodium vivax

  3. Plasmodium ovale

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

Malaria is caused by a parasite called Plasmodium, with Plasmodium falciparum being the most common and deadly species.

Multiple choice

Which disease control program aims to eliminate malaria from India?

  1. National Vector Borne Disease Control Program

  2. National Malaria Elimination Program

  3. Malaria Control Program

  4. Malaria Eradication Program
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The National Malaria Elimination Program aims to eliminate malaria from India.

Multiple choice

Which of the following insects is a vector of disease?

  1. Mosquito

  2. Tsetse Fly

  3. Sand Fly

  4. Black Fly
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Mosquitoes, Tsetse Flies, Sand Flies, and Black Flies are all vectors of disease, meaning they can transmit diseases from one animal to another.

Multiple choice

What are some of the future challenges for veterinary epidemiology?

  1. The emergence of new and emerging animal diseases

  2. The increasing globalization of the animal trade

  3. The impact of climate change on animal diseases

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

Future challenges for veterinary epidemiology include the emergence of new and emerging animal diseases, the increasing globalization of the animal trade, and the impact of climate change on animal diseases.

Multiple choice

Which of the following is NOT a mode of transmission for infectious diseases?

  1. Contact transmission

  2. Droplet transmission

  3. Airborne transmission

  4. Vector-borne transmission
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vector-borne transmission is not a mode of transmission for infectious diseases, as it is not caused by microorganisms.

Multiple choice

What is the primary mechanism by which parasites cause disease?

  1. By producing toxins

  2. By invading and destroying host cells

  3. By stimulating the host's immune response

  4. By competing with the host for nutrients
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Parasites cause disease by competing with the host for nutrients. They do this by attaching themselves to the host's cells and absorbing nutrients from them.

Multiple choice

Which medical discovery led to the development of the first effective treatment for malaria?

  1. Quinine

  2. Artemisinin

  3. Chloroquine

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

Quinine, extracted from the bark of the cinchona tree, was the first effective treatment for malaria.