Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Microbiology > The Protozoa Lab Exam I > Flashcards

The Protozoa Lab Exam I Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q
  • Live, feed and grow at expense of host
  • Can be microscopic animals, fungi, bacteria, viruses, and protozoa
  • Effective dispersal can be inhalation, contact, vector-borne, ingestion
  • Hide from host immune system
  • Don’t kill host, or Kill slowly
A

Parasites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Are animal-like protists

  • These are all Eukaryotes (very Diverse)
  • 4 groups of protozoa (based on locomotion)
  • Ciliates, Amoebae, Flagellates, Apicomplexans
A

Protozoa Parasites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Protozoas Parasites can exist in two forms:

A
  • Trophozaite

- Cyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A feeding and reproducing stage (lives within the Host)

A

Trophozaite (Protozoan Parasites)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Dormant, can live in an environment and infect new Hosts

A

Cyst (Protozoan Parasites)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Excystment: Trophozoite and Cyst

A

After ingested, cyst develops into tropozoite, active and feeding stage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Encystment: Trophozoite and Cyst

A

Cyst formation before exiting the body (fecal route), helps protect and infect new host

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The Ciliates

A

Use cilia for locomotion and or acquiring food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Found in intestinal tracts of animals, usually pigs

  • The only ciliate to cause disease in humans
  • Commonly infected by consuming food or water contaminated with feces containing cysts
  • Excystment occurs in small intestines
A

Balantidium coli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Diarrhea, abdominal pain, weight loss and dysentery

A

results in balantidiasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Causes Amebic Dysentery

  • Ingested by contaminated food and water
  • Cysts in the water (asymptomatic in -10% of human population)
  • More common in underdeveloped countries
A

Entameba Histolytica

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  • Ingest cysts
  • Pass through stomach
  • Excystment in the small intestine
  • Trophozoites release enzymes and penetrate the intestinal lining
  • creates ulcers and then cause symptoms
A

Entameba Histolytica (Pathology)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Characterized by having no truly defined shape, using Pseudopodia to move and acquire food

A

The Amoebae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Infection caused by amoebas

A

Amebiasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Diarhea and bloody stools

  • cramps
  • vomiting
  • weight loss
  • malaise
  • angry
A

Amebic dysentery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Diagnosis of Amebic Dysentery

A
  • Must find trophozoites in stool to identify amoeba from bacteria
  • Antibody test is used for identification
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Entameba histolytice

A

Causes amebiasis and amebic dysentery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Acanthamoeba and Naegleria

A

Causes fatal infections in the brain

  • Rare incidence
  • Common in warm lakes, ponds, moist soil
  • Transmission can occur through open wounds, eyes, or ingesting contaminated water
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q 
Lives on the surface of teeth
-base of gums
-Tonsils
-Has been implicated as a cause of gingivitis
Transmission is by kissing
-No cyst stage, trophozoite only
A

Entameba gingivalis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Characterized by having at least one flagella

A

The Flagellates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Entameba gingivalis cyst or trophozoites

A

trophozoites

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Causes trichomoniasis “trich”

  • Transmitted by sex (STD)
  • poor hygiene helps establishment
A

Trichomonas vaginalis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Found in vagina in women

-urethra and prostate of men

A

Trichomonas vaginalis

24
Q

Trichomonas Vaginalis

Cyst or Trophozoite

A

Trophozoite only

25
Q

Trichomonas vaginalis pathology

A
  • Gets in the vagina and raises the pH to 4-4.5 to 5-6; this promotes growth
  • Feed on bacteria and leukocyes
  • Degeneration of epithelium with inflammation
26
Q

Symptoms of Trichomonas vaginalis in women

A
  • Itching, burning during urination
  • Stinging pain, painful intercourse
  • White or yellow or green discharge
27
Q

Symptoms of Trichomonas Vaginalis in men

A
  • Pain during urination

- Lower sperm count

28
Q

Diagnosis of Trichomonas Vaginalis

A

View trophozoties in vaginal smear, swab urethra

29
Q

Is a common water-borne gastrointestinal disease

-Found in contaminated water

A

Giardia lamblia

30
Q

Animal reservoirs include beaver, dogs, sheep, deer;

These animals shed cysts in their feces, cysts can survive for months outside of host

A

Giardia lambia

31
Q

Giardia lamblia pathology

A

The ingested cysts pass through stomach

  • Excystment in the duodenum, trophozoites in intestine
  • attaches to the intestinal wall
  • multiplies and interfere with absorption of fats, fats not absorbed by host
32
Q

Symptoms of giardia lamblia

A
  • Some people are asymptomatic
  • Foul smelling gas
  • Frothy diarrhea
  • Fatty stool (it floats)
  • Painful cramps
33
Q

Giardia lamblia Trophozoties or Cyst

A

Both

-Cyst in the stool of the host

34
Q

This organism causes African sleeping sickness

A

Trypanosoma bruccei

35
Q

What are the animal reservoirs (host) of the Trypanosoma bruccei

A

Cattle
Sheep
Wild animals
Humans

36
Q

Vectors of the Typanosoma Bruccei

A

The Tse-Tse fly

Transmitted by the bite

37
Q

Typanosoma Bruccei pathology

A
  • Fly bites human
  • Forms a chancre
  • Parasite enters the blood
  • Spreads to the lymph system and blood
  • Invade the heart and block blood vessels
  • Travel to the CNS
38
Q

Symptoms and diagnosis of Trypanosoma Brucei

A

-Fever
-Swelling of the lymphh nodes
-headache
-faulty blood clotting
-tremors
-rigid muscles
-heart and valve damage
-Coma
-Death
Diagnosis; View Epimastigotes in the blood

39
Q

Tse-Tse Fly

A

In the fly the Trypanosoma matures in salivary glands of Tse-Tse fly andis called a Trypanomastigote

40
Q

This causes of South American Sleeping sickness or Chagas Disease

A

Trypanosoma cruzi

41
Q

Animal reservoirs for the Trypanosoma cruzi

A

Armadillos
Opossums
Humans
And other animals

42
Q

Vectors of the Trypanosoma Cruzi

A

The Triatmoid bug (the kissing bug)

43
Q

Trypanosoma Cruzi Pathology

A

Bug bites on the lips and defecates

  • Forms a Chagome
  • Trypanosomes multiply at the chagoma
  • Enter the blood
  • Go to heart
  • –Enter the heart muscle cells and become amastigotes (non-Flagellated form)
  • –Alter cardiac activity, heart failure and death
  • Enters the CNS
44
Q

Chagoma

A

Swelling at the site of a bug bite

45
Q

The symptoms of the Trypanosoma cruzi

A 
Chagoma on the lip
Fever
Swollen lymph nodes
Irregular heart beat
Enlargement of spleen, colon, and esophagus
Blood clots
Heart Failure
Coma and death
46
Q
  • Have a apical complex used in penetrating a Host cell
  • During life cycle they assume a non-motile spore-like shape
  • Very complex life cycle which involves at least two Hosts
A

The Apicomplexans

47
Q
  • Cause of Malaria
  • Endemic in over 100 countries, primarily the tropics
  • Cases in the U.S. are rare
  • Vector: The anopheles mosquito
A

Plasmodium

48
Q

Plasmodium pathology

A
  • Caused by inflammatory response and destrutio of red blood cells
  • RBC spontaneously burst due to schizont (asexual reproduction of parasite
  • Body can not recycle lost iron fast enough
  • Bone marrow cannot keep up with loss of RBC
  • Vessels are clogged due to lysis of RBC
  • Kidneys have difficulty filtrating blood Damage to kidneys
49
Q

Pladmodium Symptoms

A

-Severity of Malaria can vary according to species

50
Q

Pladmodium Symptoms Also include

A
  • Anemia
  • Malaise, Muscle aches and pains, Mild delirium
  • Loss of appetite
  • A feeling of extreme cold and then a fever an hour later
  • Excessive perspiration
  • Reddish black urine
  • Can go to the brain and cause cerebral malaria
  • –Fever of 108 and then coma and death
  • Could have a heart attack and stroke from cell debris
51
Q

This organism can cross the placenta

  • Called Congential Toxoplasmosis
  • Can result in brain, eye malformations.Mental retardation
  • May result in stillbirth or spontaneous abortion
A

Toxoplama gondii

52
Q

What does Toxoplasna gondii causes

A

Toxoplasmosis

53
Q

Toxoplasmosis:

A

Fever producing illness. resembles pneumonia

54
Q

Toxoplasma gondii definitive host

A

The Cat

55
Q

Toxoplasm gondii reservoirs or host in nature

A

Rodent
Birds
-Undercook meat

Microbiology (26 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions