parasit quiz 1

Question 0

what is the resistant, resting but infective stage of protozoan?

Answer 0

cyst

Question 1

what is term for free living or infective stage of protoaoan?

Answer 1

trophozoites

Question 2

what modes of locomotion of protozoans are by flexing and gliding?

Answer 2

undulating membrane and subpellicular microtubules

Question 3

what are the 3 ways of asexual repro of protozoa?

Answer 3

binary fission
multiple fission or schizogony (nuclear division precedes cytokinesis)
budding

Question 4

what are the 2 ways protozoa reproduce sexually?

Answer 4

conjugation

syngamy - forms zygote

Question 6

what is a paratenic(transport) host?

Answer 6

non essential host, no development within body

Question 7

what is a mechanical vector?

Answer 7

non essential host, passively carries infective stage

Question 8

What is a biological vector?

Answer 8

usually arthropod, maybe intermediate host or mechanical vector

Question 9

Life cycle where transmission of parasitic infection from one host to another without intermediate host

Answer 9

Direct life cycle

Question 10

Life cycle where there is one or more essential intermediate hosts

Answer 10

indirect life cycle

Question 11

Time period between ingestion and invasions of infective stages of a helminth in its definitive host until eggs or larvae are produced

Answer 11

pre-patent period

Question 12

Period of the life span of adult parasite in host

Answer 12

patent period

Question 13

How many types of protozoa are parasitic?

Answer 13

10,000

Question 14

Are protozoa prokaryotes or eukaryotes?

Answer 14

eukaryotes (have organelles)

Question 15

Free-living or infective stage of protozoan

Answer 15

trophozite

Question 16

Resistant, resting but infective stage of protozoan

Answer 16

cyst

Question 17

What is the morphology of T. foetus?

Answer 17

pyriform with 1 recurrent flagellum with undulating membrane

Question 18

Where is T. foetus found in the bull?

Answer 18

preputial cavity

Question 19

Does T. foetus have a cyst stage?

Answer 19

no, also direct life cycle by sexual contact

Question 20

What are the clinical signs of T. foetus in cows?

Answer 20

early abortion

Question 21

What is the prognosis for clearing a bull of T. foetus infection?

Answer 21

guarded, different state regulations

Question 22

What is the standard for molecular diagnosis of T. foetus?

Answer 22

culture and gel PCR assay

Question 23

What can be used to flush the preputial cavity in bulls with T. foetus?

Answer 23

Alcide

Question 24

What is the scientific name for bovine trichomoniasis?

Answer 24

Tritrichomonas foetus

Question 25

What is the vaccine Trichguard good for?

Answer 25

reduces severity of disease, does not prevent

Question 26

What is the species that causes "cankor" or "frounce" in young birds?

Answer 26

Trichomonas gallinae

Question 27

How is T. gallinae transmitted?

Answer 27

direct by bird to bird contact and cloacal drinking

Question 28

What drug can be used to treat T. gallinae in non food birds?

Answer 28

metronidazole

Question 29

Which trichomonad occurs in the mouth of the dog?

Answer 29

Trichomonas canistomae

Question 30

What are the clinical signs of T. canistomae

Answer 30

nonpathogenic, +/- vaginitis

Question 31

Which protozoan is DNA homologous with T. foetus but found in cats and humans?

Answer 31

Pentatritrichomonas

Question 32

Which protozoan is found in mouth of cats with FIV, FelV, or FIP?

Answer 32

Tetratrichomonas felistomae

Question 33

Which flagellate parasite causes black head disease in turkeys and range birds?

Answer 33

Histomonas meleagridis

Question 34

Why is H. meleagridis pleomorphic?

Answer 34

Amoeboid form - intestinal lumen, or singly in tissues (no flagella) Transitional form - lumen

Question 35

What is the life cycle of H. meleagridis?

Answer 35

direct, unique via eggs of cecal worm (H. gallinarum) develop on ground to L3 stage also, cloacal drinking

Question 36

What are the paretenic stages of H. meleagridis?

Answer 36

earthworms

Question 37

Where are lesions of H. meleagridis found in birds?

Answer 37

cecum and liver

Question 38

How is Histomonas meleagridis treated?

Answer 38

fenbendazole and metronidazole | seperate turkeys and chickens

Question 39

How many nuclei does Giardia trophozite have?

Answer 39

binucleate

Question 40

What stage of Giardia is responsible for transmission?

Answer 40

cyst

Question 41

What type of life cycle does Giardia have?

Answer 41

direct

Question 42

How does Giardia divide and how often?

Answer 42

longitudinal binary fission every 12 hours

Question 43

What are the clinical signs of Entamoeba histolytica?

Answer 43

abdominal pain, intermittent diarrhea, anorexia, malaise, waxes and wanes

Question 44

What kind of lesions are associated with Entamoeba histolytica?

Answer 44

flask shaped ulcers

Question 45

What reptiles does E. invadens infect?

Answer 45

snakes and carnivorous lizards

Question 46

In what organs can you find E. invadens?

Answer 46

intestines - liver, abcesses, severe

Question 47

What type of life cycle does E. invadens have?

Answer 47

direct

Question 48

Is balantidium zoonotic?

Answer 48

yes

Question 49

What is the life cycle of Balantidium coli?

Answer 49

fecal oral, infective stage in feces

Question 50

What are the clinical signs of Balantidium coli?

Answer 50

asymptomatic, water diarrhea, nausea, vomiting, colic