INTRODUCTION TO PARASITOLOGY

Question 1

living together of phylogenetically different organisms

Answer 1

SYMBIOSIS

Question 2

beneficial to both organisms

Answer 2

Mutualism

Question 3

beneficial to one organism, neutral to the other

Answer 3

Commensalism

Question 4

beneficial to one organism, harmful to the other

Answer 4

Parasitism

Question 5

Harbors the adult or sexual stage of a parasite

Answer 5

Definitive

Question 6

Harbors the larval or asexual stage of a parasite

Answer 6

Intermediate

Question 7

Harbors a parasite that does not develop but
remains alive and is infective to the next host

Answer 7

Paratenic

Question 8

Allows the parasite’s life cycle to continue and
serves as a source of human infection

Answer 8

Reservoir

Question 9

Depends entirely upon its host for existence

Answer 9

Obligate

Question 10

Capable of parasitic and free-living existence

Answer 10

Facultative

Question 11

Larval stage is passed in a host while the adult
is free living

Answer 11

Transitory

Question 12

Completes its life cycle in ONE HOST

Answer 12

Permanent

Question 13

Requires 2 or more for the larval
and adult stages

Answer 13

Periodic

Question 14

Primarily infects animals and may be acquired
by man

Answer 14

Zoonotic

Question 15

Occurs in an unusual host

Answer 15

Accidental

Question 16

Occurs in an unusual organ or habitat

Answer 16

Erratic

Question 17

Passes through the intestinal tract without
causing any disturbance

Answer 17

Spurious or
coprozoic

Question 18

Lives inside the body of a host

Answer 18

Endoparasite

Question 19

invasion of ENDOPARASITE is called

Answer 19

Infection

Question 20

Lives on body surfaces;

Answer 20

Ectoparasite

Question 21

invasion of ECTOPARASITE is called

Answer 21

Infestation

Question 22

Visits the host only during feeding time

Answer 22

Intermittent

Question 23

vector that – transmits a parasite only after the latter has completed part of its development

Answer 23

Biologic vector

Question 24

vector that is – not essential in the parasite’s life cycle and is responsible only for transporting
the parasite

Answer 24

Mechanical or Phoretic

Question 25

mosquitoes, biting flies, kissing bugs, and ticks are ___ vector

Answer 25

Biologic vectors

Question 26

cockroaches and house flies are ___ vectors

Answer 26

Mechanical Vectors

Question 27

most intestinal parasites mode of transmission is

Answer 27

Ingestion

Question 28

portal entry of MOT: larval skin penetration and skin inoculation (vector-borne)

Answer 28

skin

Question 29

portal entry of MOT: sexual intercourse

Answer 29

Urogenital tract

Question 30

portal entry of MOT: intranasal (e.g. meningoencephalitis)

Answer 30

Nasal passages

Question 31

portal entry of MOT: vertical transmission (mother to fetus)

Answer 31

transplacental

Question 32

Autoinfection can be ___ within the intestine or ____ hand to mouth

Answer 32

internal (within the intestine) or external (hand to mouth)

Question 33

most common portal of exit

Answer 33

Anus

Question 34

most common portal of entry

Answer 34

Mouth