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Parasitology 1 Lab Test

Total questions: 25

Worksheet time: 8mins

Name
Class
Date
1.

What is the primary purpose of a centrifuge in parasitology concentration techniques?

a)

To stain parasites

b)

To concentrate parasites in a sample

c)

To fix parasites on a slide

d)

To visualize parasites under a microscope

2.

Which concentration technique is commonly used to detect the presence of helminth eggs and larvae in fecal samples?

a)

Zinc Sulfate technique

b)

Acid-fast stain

c)

Direct wet mount

d)

Gram stain

3.

In parasitology, what is the purpose of using a fecal flotation technique?

a)

To stain parasites

b)

To concentrate parasites in a sample

c)

To identify protozoa

d)

To perform blood smears

4.

Which microscopic examination technique involves placing a drop of liquid sample on a slide and covering it with a coverslip for direct observation?

a)

Kato-Katz method

b)

Formalin-ether concentration

c)

Direct wet mount

d)

Fecal flotation

5.

In parasitology, what is the purpose of the Giemsa stain?

a)

To stain parasites

b)

To concentrate parasites in a sample

c)

To detect the presence of helminth eggs

d)

To perform blood smears

6.

What is the primary purpose of the Brine Flotation Technique in parasitology?

a)

To stain parasites

b)

To concentrate parasites in a sample

c)

To fix parasites on a slide

d)

To perform blood smears

7.

What type of parasites is the Brine Flotation Technique particularly useful for detecting?

a)

Helminths

b)

Protozoa

c)

Nematodes

d)

Trematodes

8.

Which of the following statements is true regarding the Brine Flotation Technique?

a)

It relies on direct observation without staining.

b)

It involves the use of a Baermann apparatus.

c)

It is primarily used for detecting protozoa.

d)

It uses a high-speed centrifuge for concentration.

9.

In parasitology, why is the Trichome Staining Method commonly used for studying parasites?

a)

To highlight parasite cysts

b)

To stain the outer cuticle of parasites

c)

To visualize parasite nuclei and structures

d)

To detect parasite motility

10.

Which type of parasites is particularly well-stained and visualized using the Iron Hematoxylin Staining Method?

a)

Protozoa

b)

Helminths

c)

Arthropods

d)

Nematodes

11.

The picture is a cyst from a protozoan species. This species is well recognized as a pathogenic ameba, associated with intestinal and extraintestinal infections. What is the species of protozoan in the picture?

a)

Brugia malayi

b)

Balantidium coli

c)

Entamoeba histolytica

d)

Enterobius vermicularis

12.

This egg belongs to a roundworm. Identify this egg.

a)

Strongyloides stercoralis

b)

Ascaris lumbricoides

c)

Enterobius vermicularis

d)

Fasciola hepatica

13.

This parasite is species of amebae are capable of colonizing the human gastrointestinal tract, but not pathogenic. Identify this parasite.

a)

Entamoeba coli

b)

Entamoeba histolytica

c)

Enterobius vermicularis

d)

Gardia lambia

14.

Identify the parasite in the picture.

a)

Gardia sp.

trophozoites

b)

Plasmodium sp.

trophozoites

c)

Enterobius sp.

d)

Entamoeba sp

trophoziotes

15.

This parasite causes Malaria. What stage is this parasite?

a)

Gametocytes

b)

Trophozoites

c)

Ring-form

d)

Schizont

16.

This parasite causes Malaria. What stage is this parasite?

a)

Gametocytes

b)

Trophozoites

c)

Ring-form

d)

Schizont

17.

This parasite causes Malaria. What stage is this parasite?

a)

Gametocytes

b)

Trophozoites

c)

Ring-form

d)

Schizont

18.

This parasite causes Malaria. What stage is this parasite?

a)

Gametocytes

b)

Trophozoites

c)

Ring-form

d)

Schizont

19.

This parasite is a the causative agents of lymphatic filariasis, Identify this parasite.

a)

Enterobius vermicularis

b)

Hookworm

c)

Ascaris lumbricoides

d)

Brugia malayi,

20.

Adult females can grow up to 20 to 35 cm and adult males worm can grow up to 15 to 30 cm. This worm parasitize the human intestine. Identify this worm.

a)

Ancylostomiasis (Hookworm)

b)

Ascaris lumbricoides

c)

Wuchereria bancrofti

d)

Whipworm (Trichuriasis)

21.

This parasite is commonly known as ?

a)

Intestine fluke

b)

lungs fluke

c)

liver fluke

d)

kidney fluke

22.

This eggs below to parasite X. Parasite X occurs worldwide, with infections occurring most frequently in school- or preschool-children and in crowded conditions. What is Parasite X.

a)

B.malayi

b)

A. lumbricoides

c)

E. vermicularis

d)

Hookworm

23.

This egg is normally known as lung fluke. What is the name of the parasite?

a)

Fasciola hepatica

b)

Paragonimus westermani

c)

Fasciolopsis buski

24.

A 29-year-old female patient presented to her primary care physician reporting a 15-day history of whitish, vaginal discharge associated with itching. She also complained of lower abdominal pain. A vaginal, speculum examination revealed an inflamed cervix with red, punctate lesions. A Pap smear collected at the time of examination was sent to the pathology lab for a Papanicolaou stain. Figures A and B show what the pathologist observed using an oil immersion objective. The objects of interest measured 10-15 µm long. Identify this parasite

a)

Brugia malayi

b)

Trichomonas vaginalis

c)

Gardia lambia

d)

Plasmodium vivex

25.

A 42-year-old pig farmer presented to his local medical facility with intermittent diarrhea and abdominal cramping. A stool specimen was collected in 10% formalin for laboratory testing. Figures A were captured at 200x magnification. Figures B a higher magnification (400x) of the same objects. What is your diagnosis?

a)

Brugia malayi & Balantidium coli

b)

Enterobius vermicularis & Balantidium coli

c)

Ascaris lumbricoides & Balantidium coli

d)

Entamoeba histolytica & Enterobius vermicularis