1Relationship where two or more species live closely together?
Symbiosis
2Symbiotic relationship where both organisms benefit from each other?
Mutualism
3Mutualistic relationship between termites and protozoa?
Termites and flagellates
4Relationship where one species benefits without harming the other?
Commensalism
5Non-pathogenic amoeba normally inhabiting the large intestine?
Entamoeba coli
6Relationship where one species benefits at the expense of another?
Parasitism
7Parasite that causes amoebic dysentery?
Entamoeba histolytica
8Organisms that live on or in a host and obtain nutrients from it?
Parasites
9Invasion of parasites inside the human body?
Infection
10Invasion of parasites on the external surface of the body?
Infestation
11Carriers responsible for transmitting parasites to hosts?
Vectors
12Parasites established inside the host?
Endoparasites
13Roundworm commonly found in the intestine of humans?
Ascaris lumbricoides
14Parasites living on the exterior surface of the host?
Ectoparasites
15Head louse parasite of humans?
Pediculus humanus capitis
16Unicellular parasitic microorganisms?
Protozoans
17Multicellular parasitic worms?
Helminths
18Insect group that includes many parasite vectors?
Arthropods
19Free-living organisms that pass through the digestive tract without infecting the host?
Spurious or coprozoic parasites
20Parasites that live on other parasites?
Hyperparasites
21Artifacts mistaken for parasites?
Pseudoparasites
22Parasites that cannot survive outside the host?
Obligatory parasites
23Parasites capable of existing independently of a host?
Facultative parasites
24Parasites that remain in the host from early life to maturity?
Permanent parasites
25Parasites that live on the host only for a short time?
Temporary parasites
26Parasites that enter a host not usually theirs?
Accidental or incidental parasites
27Parasites found in organs not their usual habitat?
Erratic or aberrant parasites
28Host in which the adult sexual stage of the parasite occurs?
Definitive host
29Host in which the larval or asexual stage develops?
Intermediate host
30Host that harbors parasites infectious to humans?
Reservoir host
31Host where the parasite remains arrested in development?
Paratenic host
32Vector where parasites multiply or develop inside the body?
Biologic vector
33Vector that only transports parasites without development?
Mechanical vector
34Morphologic form of a parasite that invades humans?
Infective stage
35Parasite form detectable in the laboratory?
Diagnostic stage
36Life cycle that does not require an intermediate host?
Direct life cycle
37Life cycle that requires an intermediate host or vector?
Indirect life cycle
38Organism capable of causing disease?
Pathogen
39Person who harbors a pathogen without symptoms?
Carrier
40Process of inoculation of an infective agent?
Exposure
41Establishment of an infective agent in the host?
Infection
42Time between infection and appearance of symptoms?
Incubation period
43Time between infection and detectable evidence of infection?
Prepatent period
44Condition where an infected person becomes their own source of infection?
Autoinfection
45Reinfection with the same parasite causing massive infection?
Superinfection or hyperinfection
46Most commonly submitted specimen in parasitology?
Stool
47Substances that preserve parasite morphology?
Fixatives
48Visual examination of specimens without a microscope?
Macroscopic examination
49Examination of specimens using a microscope?
Microscopic examination