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

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

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 term used for the unintentional movement of pests from one country to another through trade or travel?

  1. Pest introduction

  2. Pest dispersal

  3. Pest establishment

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

Pest introduction refers to the unintentional movement of pests from one country to another through trade or travel, posing a risk to agricultural resources and ecosystems.

Multiple choice

Which technique involves using bacteriophages to infect and kill bacteria?

  1. Microscopy

  2. Staining

  3. Culturing

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

Bacteriophage therapy involves using bacteriophages, viruses that infect and kill bacteria, as a treatment for bacterial infections.

Multiple choice

What is the primary mode of transmission for malaria parasites?

  1. Through contaminated water

  2. Through direct contact with an infected person

  3. Through the bite of an infected mosquito

  4. Through eating contaminated food
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Malaria parasites are transmitted primarily through the bite of an infected female Anopheles mosquito.

Multiple choice

Which organism causes African sleeping sickness?

  1. Trypanosoma brucei gambiense

  2. Trypanosoma brucei rhodesiense

  3. Leishmania donovani

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

African sleeping sickness is caused by Trypanosoma brucei gambiense, a protozoan parasite transmitted by the tsetse fly.

Multiple choice

What is the causative agent of Chagas disease?

  1. Toxoplasma gondii

  2. Trypanosoma cruzi

  3. Leishmania major

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

Chagas disease is caused by Trypanosoma cruzi, a protozoan parasite transmitted by triatomine bugs.

Multiple choice

Which parasite causes visceral leishmaniasis?

  1. Leishmania donovani

  2. Leishmania major

  3. Leishmania tropica

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

Visceral leishmaniasis is caused by Leishmania donovani, a protozoan parasite transmitted by sand flies.

Multiple choice

What is the causative agent of toxoplasmosis?

  1. Toxoplasma gondii

  2. Trypanosoma brucei gambiense

  3. Leishmania donovani

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

Toxoplasmosis is caused by Toxoplasma gondii, a protozoan parasite that can be transmitted through contact with cat feces, undercooked meat, or contaminated soil.

Multiple choice

Which parasite causes giardiasis?

  1. Giardia lamblia

  2. Entamoeba histolytica

  3. Cryptosporidium parvum

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

Giardiasis is caused by Giardia lamblia, a protozoan parasite transmitted through contaminated water or food.

Multiple choice

What is the causative agent of cryptosporidiosis?

  1. Giardia lamblia

  2. Entamoeba histolytica

  3. Cryptosporidium parvum

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

Cryptosporidiosis is caused by Cryptosporidium parvum, a protozoan parasite transmitted through contaminated water or food.

Multiple choice

Which parasite causes cyclosporiasis?

  1. Giardia lamblia

  2. Entamoeba histolytica

  3. Cryptosporidium parvum

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

Cyclosporiasis is caused by Cyclospora cayetanensis, a protozoan parasite transmitted through contaminated water or food.

Multiple choice

What is the causative agent of amebiasis?

  1. Giardia lamblia

  2. Entamoeba histolytica

  3. Cryptosporidium parvum

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

Amebiasis is caused by Entamoeba histolytica, a protozoan parasite transmitted through contaminated water or food.