Font size
WorksheetsParasitology & Fungi Tutorial
Total questions: 35
Worksheet time: 34mins
In the life cycle of the pinworm Enterobius, a common pediatric infection, the child carries the adult worm in his/her intestine. The adult worm releases eggs, which are transmitted out of the body in the feces. The child will scratch the itching anal region, picking up the worm eggs and re-inserting them into his/her mouth. For this helminth life cycle, the human is the ______ host.
intermediate
definitive
primary
intermediate and definitive
Eating undercooked meat can lead to food-borne disease via helminthic infection. What is the common host for Taenia solium?
Chickens
Pigs
Ducks
Cows
Parasitic helminths have a highly developed ______ system to enhance host transmission.
digestive
reproductive
muscular
nervous
Larval development of helminths occurs in which host?
Primary host
Intermediate host
Definitive host
Larval development takes place in all hosts.
Adulthood and mating of helminths occur in which host?
Primary host
Secondary host
Definitive host
Intermediate host
Larvae and eggs are developmental forms of ______.
algae
helminths
protozoa
fungi
The following are human diseases caused by systemic fungi:
Aspergillosis
Cryptococcocis
Diaper rash
Ringworm
Sporotrichosis
The following are typical characteristics of systemic fungi:
It causes disease only in the immunocompromised
It causes flu-like illness
It has specific geographic distribution
It is dimorphic
It is most commonly transmitted from person-to-person
The following are TRUE regarding dermatophytosis:
It causes disease only in the immunocompromised
Pathogenesis is due to the invasion of fungal hyphal
Skin is the most commonly infected organ
The infection is usually associated with occupational hazards
Macroconidia and microconidia are the most reliable diagnostic features
The following are TRUE regarding Malassesia furfur:
It causes granulomatous skin lesions
It is a dimorphic fungus
It is commonly diagnosed by serologic tests
It is transmitted through inhalation of fungal spores
It’s metabolic products lead to the pathology
The following are deep fungal infections:
Aspergilloma
Blastomycosis
Dermatophytosis
Sporotrichosis
Tinea versicolor
Which of the following does not pertain to helminths?
Often alternate hosts in complex life cycles
Have organ systems
Eggs and sperm used for reproduction
Members of Kingdom Protista
All of the following are helminths except ______.
roundworms
pinworms
trypanosomes
flukes
In humans, helminths generally infect the ______.
gastrointestinal tract
skin
urinary tract
nervous system
The two major groups of helminths are the ______ and the ______.
tapeworms; flukes
roundworms; pinworms
cestodes; trematodes
roundworms; flatworms
You are attempting to identify the type of helminth that has been isolated from a patient stool sample. The most important consideration to make this distinction is to
determine if the cells are eukaryotic or bacterial by looking for nuclei.
examine the sample to see if microscopic eggs are present.
look at the gross anatomy to determine if the body is segmented or not.
ask the patient about recent food and water consumption.
After returning from a trip to Africa, Tom feels tired and weak and has severe anemia. A blood smear reveals a protozoan in his blood and the health care provider diagnoses malaria. Which of the following could be the causative agent of this disease?
Plasmodium vivax
Taenia solium
Giardia lamblia
Trichophyton rubrum
Amoebic dysentery is most commonly contracted through
direct transmission from one host to another.
insect bites.
the fecal-oral route from contaminated food or water.
contaminated blood products.
Which pair is mismatched?
Trichomonas - sexually transmitted
Trypanosoma - causes African sleeping sickness
Giardia - transmitted by feces in drinking water
Histoplasma - causes Chagas disease
A specimen from a patient suffering diarrhea shows a one-celled organism in the microscope. The organism moves very slowly by protruding its cytoplasm. You would predict that the patient has an infection caused by ______.
Plasmodium
Giardia
Entamoeba
Toxoplasma
Protozoan cysts are
part of all protozoan life cycles.
analogous to bacterial endospores.
necessary for transmission to a new host.
are produced by binary fission.
A protozoan cyst differs from a helminth egg in that
the chromosome is free in the cytoplasm of a cyst, but enclosed in a nucleus in an egg.
cysts have a uniform structure, but eggs have a wide variety of morphologies.
a cyst is metabolically active, but an egg is not.
the cyst can germinate to form the organism but the egg must be fertilized.
A protozoan having a flagellum would be classified in the genus ______.
Trypanosoma
Enterobius
Entamoeba
Plasmodium
The motile, feeding stage of protozoa is called the ______.
sporozoite
trophozoite
food vacuole
oocyst
Protozoan cells do not exhibit ______.
cyst formation
motility
heterotrophic nutrition
a cell wall
In producing beer and wine, humans have exploited the microbial ability to ferment sugar to alcohol. The microbes responsible for this process are ______.
fungi
algae
bacteria
protozoans
virus
Fungal asexual spores
are used to identify fungi.
cannot be seen using a light microscope.
produce offspring with different combinations of genes from the parent.
are the products of meiotic division by a single parent cell.
The intertwined mass of hyphae that constitutes the body of a mold is a ______.
rhizoid
mycelium
bud
stock
Which of the following organisms has a cell wall?
Trypanosoma cruzi
Candida albicans
Enterobius vermicularis
Entamoeba histolytica
You are observing an organism under the microscope, and it is clearly multicellular with no cell walls. Your prediction is that this organism is a(n) ______.
helminth
bacterium
fungus
protozoan
You are observing an organism under the microscope and you note that it has a cell wall, no chloroplasts, and a nucleus. Your prediction would be that this organism is a(n) ______.
fungus
bacterium
protozoan
virus
In the condition called athlete's foot, the fungus Trichophyton consumes the keratin protein found in hair, nails, and dead skin. Which of the following descriptors does not apply to Trichophyton?
Eukaryote
Parasite
Saprobe
Heterotroph
Amoeba utilize what structures for motility?
Axial filaments
Pseudopods
Flagella
Cilia
Choose the statement that most accurately describes a typical helminth lifestyle.
Asexually in definitive host & sexually in intermediate host
Sexually & alternates between free living & parasitic stages
Sexually&spends most of its life in single/many animal hosts
Asexually & is facultatively parasitic
Select that statement that best describes the role of protozoan cysts.
Active, growing stage of the organism.
Survive adverse environmental conditions between hosts.
Trophozoites are the stage that infects definitive hosts.
Protozoan cysts are a reproductive stage.
