Biology ยท General Awareness

Disease Vectors and Pathogens

820 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

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

Which of the following is an example of a parasitic freshwater invertebrate?

  1. Leech

  2. Water flea

  3. Mayfly nymph

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

Leeches are parasitic freshwater invertebrates that attach themselves to other organisms and feed on their blood.

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.

Multiple choice

What is the primary mechanism of action of artemisinin-based combination therapies (ACTs) in the treatment of malaria?

  1. Inhibiting parasite metabolism

  2. Interfering with parasite reproduction

  3. Damaging the parasite cell membrane

  4. Blocking parasite attachment
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

ACTs work by damaging the cell membrane of the malaria parasite, leading to cell death.

Multiple choice

Which of the following is NOT a type of infectious disease that can be spread through contact with an infected insect?

  1. Dengue fever

  2. Chikungunya

  3. Zika virus

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

Malaria is a parasitic infection that is spread through the bite of an infected mosquito.

Multiple choice

What is the causative agent of malaria?

  1. Plasmodium falciparum

  2. Trypanosoma cruzi

  3. Leishmania donovani

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

Malaria is caused by a protozoan parasite called Plasmodium falciparum, which is transmitted to humans through the bite of an infected female Anopheles mosquito.

Multiple choice

What is the primary mode of transmission for measles?

  1. Airborne

  2. Contact

  3. Fomite

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

Measles is primarily transmitted through airborne droplets when an infected person coughs or sneezes.

Multiple choice

Which of the following is NOT a type of vector-borne disease:

  1. Malaria

  2. Dengue fever

  3. Lyme disease

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

Lyme disease is not a vector-borne disease, but rather a bacterial infection that is transmitted through the bite of an infected blacklegged tick.

Multiple choice

What is the primary mode of transmission for waterborne infectious diseases?

  1. Airborne Transmission

  2. Contact Transmission

  3. Waterborne Transmission

  4. Vector-Borne Transmission
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Waterborne infectious diseases are primarily transmitted through the consumption of contaminated water or food.

Multiple choice

Which protozoan parasite causes giardiasis, a common waterborne disease?

  1. Giardia lamblia

  2. Cryptosporidium parvum

  3. Entamoeba histolytica

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

Giardia lamblia is the protozoan parasite responsible for giardiasis, characterized by symptoms such as diarrhea, abdominal pain, and nausea.

Multiple choice

What is the primary mode of transmission for waterborne infectious diseases caused by protozoa?

  1. Airborne Transmission

  2. Contact Transmission

  3. Waterborne Transmission

  4. Vector-Borne Transmission
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Protozoa, such as Giardia lamblia and Cryptosporidium parvum, are transmitted through the consumption of contaminated water or food.

Multiple choice

What is the primary mode of treatment for giardiasis, a waterborne disease caused by Giardia lamblia?

  1. Antibiotics

  2. Oral Rehydration Therapy

  3. Intravenous Fluids

  4. All of the Above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Treatment for giardiasis typically involves antibiotics, such as metronidazole or tinidazole.