UAMS Parasitology Exam #1 UPDATED
ACTUAL Questions and CORRECT
Answers
Parasitology - CORRECT ANSWER - What is the study of relationships between
organisms of different species? (Parasite vs host)
Symbiosis - CORRECT ANSWER - What describes the relationship between parasite and
host? "Living together"
Mutualism. Termites and intestinal flagella. Termites eat wood but they can't break it down.
Intestinal flagella breaks it down in order for them to use it as a food source and in return the
flagella receives a food source and housing from the termite. - CORRECT ANSWER -
What is a state of symbiosis that benefits both the host and the parasite? What is an example of
this?
Commensalism. Humans and Entamoeba coli. This form of E. coli lives in our gut but causes us
no harm. - CORRECT ANSWER - What is a state of mutualism that the parasite benefits
from, but the host is unaffected? What is an example of this?
Parasitism. Humans and giardia. Humans usually come across this parasite from contaminated
water source. It causes GI issues such as diarrhea.
The host expels the parasite, the host destroys the parasite, or the parasite destroys the host. -
CORRECT ANSWER - What state of symbiosis benefits the parasite at the expense of the
host? What is an example of this? What are the outcomes to parasitism?
Endoparasite. Plasmodium species lives within RBCs and causes malaria. Obligate endoparasite.
- CORRECT ANSWER - What is a parasite called when it is located within the host's
tissues or cells? What is an example of this? What is it called when a parasite is required to live
within tissues or cells?
, Ectoparasite. Head lice. - CORRECT ANSWER - What is a parasite that lives on the
host's surface and what is an example of this?
Facultative parasite. Strongyloides, nematode roundworm - CORRECT ANSWER - What
is a free-living parasitic organism and what is an example of this?
Obligate parasite. Hookworm - CORRECT ANSWER - What parasite must spend part or
all of its life cycle in/on a host? What is an example?
Accidental parasite. Trichinella spiralis. It normally infects pigs or boars but can infect humans if
they eat undercooked pig. - CORRECT ANSWER - What kind of parasite parasitizes an
organism other than its usual host and what is an example of this?
Zoonosis. - CORRECT ANSWER - What is the term for when a disease is transmitted
from an animal to a human?
Intermediate host. Taenia solium or tapeworm lays its eggs in the dirt. Typically pigs rummaging
for food will eat these eggs. The eggs will live in the muscles of the pig in larval form. Humans
kill the pig and eat it, ingesting the tapeworm eggs. The tapeworm eggs mature inside the human.
- CORRECT ANSWER - What type of host harbors a parasite during the larval or non-
reproductive stages? What is an example of this?
Definitive host. - CORRECT ANSWER - What type of host harbors a parasite during the
adult or sexual stage?
Enterobius vermicularis (human pinworm), trichuris trichiura (human whipworm), ascaris
lumbricoides (human roundworm), hookworm, strongyloides stercoalis (threadworm),
hymenolepis nana (dwarf tapeworm), entamoeba histolytica, acanthamoeba species, naegleria
fowleri, balamuthia mandrillaris, - CORRECT ANSWER - What are the 16 parasites that
do not require an intermediate host, there are spread through direct transmission only?
Transport host. Humans and dog roundworms are an example. Humans can pick up roundworms
and carry it for a couple days, potentially coming into contact with a dog. If contact can't be
ACTUAL Questions and CORRECT
Answers
Parasitology - CORRECT ANSWER - What is the study of relationships between
organisms of different species? (Parasite vs host)
Symbiosis - CORRECT ANSWER - What describes the relationship between parasite and
host? "Living together"
Mutualism. Termites and intestinal flagella. Termites eat wood but they can't break it down.
Intestinal flagella breaks it down in order for them to use it as a food source and in return the
flagella receives a food source and housing from the termite. - CORRECT ANSWER -
What is a state of symbiosis that benefits both the host and the parasite? What is an example of
this?
Commensalism. Humans and Entamoeba coli. This form of E. coli lives in our gut but causes us
no harm. - CORRECT ANSWER - What is a state of mutualism that the parasite benefits
from, but the host is unaffected? What is an example of this?
Parasitism. Humans and giardia. Humans usually come across this parasite from contaminated
water source. It causes GI issues such as diarrhea.
The host expels the parasite, the host destroys the parasite, or the parasite destroys the host. -
CORRECT ANSWER - What state of symbiosis benefits the parasite at the expense of the
host? What is an example of this? What are the outcomes to parasitism?
Endoparasite. Plasmodium species lives within RBCs and causes malaria. Obligate endoparasite.
- CORRECT ANSWER - What is a parasite called when it is located within the host's
tissues or cells? What is an example of this? What is it called when a parasite is required to live
within tissues or cells?
, Ectoparasite. Head lice. - CORRECT ANSWER - What is a parasite that lives on the
host's surface and what is an example of this?
Facultative parasite. Strongyloides, nematode roundworm - CORRECT ANSWER - What
is a free-living parasitic organism and what is an example of this?
Obligate parasite. Hookworm - CORRECT ANSWER - What parasite must spend part or
all of its life cycle in/on a host? What is an example?
Accidental parasite. Trichinella spiralis. It normally infects pigs or boars but can infect humans if
they eat undercooked pig. - CORRECT ANSWER - What kind of parasite parasitizes an
organism other than its usual host and what is an example of this?
Zoonosis. - CORRECT ANSWER - What is the term for when a disease is transmitted
from an animal to a human?
Intermediate host. Taenia solium or tapeworm lays its eggs in the dirt. Typically pigs rummaging
for food will eat these eggs. The eggs will live in the muscles of the pig in larval form. Humans
kill the pig and eat it, ingesting the tapeworm eggs. The tapeworm eggs mature inside the human.
- CORRECT ANSWER - What type of host harbors a parasite during the larval or non-
reproductive stages? What is an example of this?
Definitive host. - CORRECT ANSWER - What type of host harbors a parasite during the
adult or sexual stage?
Enterobius vermicularis (human pinworm), trichuris trichiura (human whipworm), ascaris
lumbricoides (human roundworm), hookworm, strongyloides stercoalis (threadworm),
hymenolepis nana (dwarf tapeworm), entamoeba histolytica, acanthamoeba species, naegleria
fowleri, balamuthia mandrillaris, - CORRECT ANSWER - What are the 16 parasites that
do not require an intermediate host, there are spread through direct transmission only?
Transport host. Humans and dog roundworms are an example. Humans can pick up roundworms
and carry it for a couple days, potentially coming into contact with a dog. If contact can't be
