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Microbiology > parasites > Flashcards

parasites Flashcards

1
Q

Entamoeba histolytica is also nown by?

A

Montezumas revenge, amoebic dysentery

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2
Q

Where is Montezumas revenge most common to obtain?

A

Common in Mexico in still water

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3
Q

What does Montezumas Revenge cause?

A

Bloody diharrea, and sometimes liver abcess

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4
Q

What stages does Entamoeba histolytica have?

A

Cyst and Trophozoite

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5
Q

How many nuclei does a Entamoeba cyst have?

A

4 Nuclei and its a perfect circle

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6
Q

How many nuclei does a Entamoeba trophozoite have?

A

1 nucleus with a circle in the middle (looks like an eye)

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7
Q

What does Giardia intestinalis cause?

A

Gastroenteritis

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8
Q

What does gastroenteritis do?

A

It causes malnutrition and dehydration (mal absorbtion)

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9
Q

Where does one aqquire this parasite?

A

Commonly found in daycare centers and affects hikers and campers through drinking or eating contaminated food and water.

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10
Q

How many stages does Giardia intestinalis have?

A

Two stages, cyst and trophozoite

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11
Q

What does a Giardia cyst look like?

A

It is an oblong shape with a mature cyst having 4 nuclei and a immature cyst having 2

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12
Q

What does a Giardia trophozoite have?

A

It has 2 nuclei towards the rounded portion and one flagella towards the pointed. It has a pear shape

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13
Q

What disease does Trypanosoma cruzi cause?

A

Chagas disease

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14
Q

How do you aqquire chagas disease

A

Through the vector known as an assasin bug or kissing bug

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15
Q

What bug is the vector for CHagas disease

A

triatoma spp

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16
Q

Are humans the definitnive host for chagas disease?

A

Yes

17
Q

What stages does cruzi have?

A

Only a trophozoite stage

18
Q

What does a cruzi trophozoite look like

A

it looks like a shrimp mixed with a sea monkey

19
Q

What disease does trichanomas vaginalis cause?

A

It causes trichomonaisis, an std

20
Q

Does trichonomas have a cyst stage?

A

No it does not, only a trophozoite stage

21
Q

what does a trophozoite for trichonomas look like?

A

It looks like a stingray, it has four flagella with one in the back and 4 in the front with one large nucleus seen and a smaller one towards the front

22
Q

What do cysts undergo to transform to trophozoites in balantidium coli

A

exystment

23
Q

what does a balantidium cyst look like

A

extremley large with a kidneybean shaped nucleus in it

24
Q

what does a balantidium trophozoite look like

A

large, cilliated, pear shaped, with a macronucleus and “arrow”

25
Q

What disease is associated with the plasmodium spp

A

Malaria

26
Q

What is the vector for Malaria?

A

Anopheles mosquitos

27
Q

What stages do plasmodium parasites undergp?

A

Trophozoite and gameocystes

28
Q

what dies a plasmodium cyst look like

A

normal cell with a ring in it that looks like a bulls nose ring, “rings of p”

29
Q

what does a plasmodiu gameocyte look like

A

A SAUSAGE ON A CELL

Microbiology (2 decks)

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