Microbiology - Parasite Vocab - Flashcardlet

Question 1

Symbiosis

Answer 1

Two different types of organisms living together

Question 2

Mutualism

Answer 2

2 organisms of different species live in a relationship where both benefit

Question 3

Commensalism

Answer 3

Relationship where 1 organism benefits & the other does not, but it is not harmed

Question 4

Parasitism

Answer 4

A relationship in which 1 organism lives off another (host) & causes harm to the host

Question 5

Host

Answer 5

Any organism that supports another organism

Question 6

Definitive host

Answer 6

Kingdom Protista - the host in which the parasite undergoes sexual reproduction;Kingdom Animalia - the host in which the adult worm is found

Question 7

Intermediate host

Answer 7

Kingdom Protista - the host in which the parasite undergoes asexual reproduction;Kingdom Animalia - the host in which the juvenile form of the worm is found

Question 8

Reservoir host

Answer 8

Infected organism (usually an animal) which makes the parasite available for transmission to other hosts

Question 9

Ectoparasite

Answer 9

A parasite that lives on the outer surface of the host; ticks, lice, fleas

Question 10

Endoparasite

Answer 10

A parasite that lives inside the host; tapeworm, Giardia, Plasmodium

Question 11

Biological vector

Answer 11

An organism in which the parasite undergoes part of its life cycle & then transmits the parasite to another organism; female Anopheles mosquito

Question 12

Mechanical vector

Answer 12

An organism that transmits a parasite, but is not part of the parasites life cycle, for example-flies, roaches, rodents

Question 13

Hermaphrodite

Answer 13

Animal that has both male AND female reproductive organs

Question 14

Cyst

Answer 14

Spore like stage of protozoa; thick wall-resistant to unfavorable environment

Question 15

Trophozoite

Answer 15

Active, motile, feeding stage of protozoa

Question 16

Oocyst

Answer 16

Cyst form in genus Plasmodium, Cryptosporidium & Toxoplasma

Question 17

Nematodes

Answer 17

Round worms, such as Ascaris & Enterobius, & hookworms

Question 18

Microfilariae

Answer 18

Thread-like roundworm

Question 19

Larva

Answer 19

Juvenile form of a worm; larvae is plural

Question 20

Ova

Answer 20

Egg

Question 21

Platyhelminthes

Answer 21

Flat worms, such as trematodes (flukes) & cestodes (tapeworms)

Question 22

Cysticerci

Answer 22

Larval stage of tapeworms, containing a single scolex within a thin walled bladder

Question 23

Cercaria

Answer 23

Free swimming larval stage of trematodes (flukes)

Question 24

Metacercaria

Answer 24

Encysted stage of flukes