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MICRO/PARA > Protozoan - Written > Flashcards

Protozoan - Written Flashcards

1
Q

Trophozoite Characteristics of Entamoeba histolytica

A) Non-motile and lacks pseudopodia.
B) Highly motile and possesses pseudopodia.
C) Non-motile and possesses flagella.
D) Highly motile and lacks pseudopodia.

A

B) Highly motile and possesses pseudopodia.

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2
Q

Which of the following is a feature of the trophozoite stage of Entamoeba histolytica?

A) Lacks a distinctive nucleus.
B) Ingests red blood cells and has a distinctive nucleus.
C) Contains multiple nuclei.
D) Does not ingest red blood cells.

A

B) Ingests red blood cells and has a distinctive nucleus.

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3
Q

The cyst stage of Entamoeba histolytica is characterized by:

A) A single nucleus and lack of chromatoid bodies.
B) “Ring and Dot” nucleus and chromatoid bodies.
C) Biflagellate structure.
D) Absence of a nucleus.

A

B) “Ring and Dot” nucleus and chromatoid bodies.

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4
Q

How many nuclei are present in the quadrinucleate cyst of Entamoeba histolytica?

A) One
B) Two
C) Four
D) Eight

A

C) Four

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5
Q

Entamoeba histolytica is known as:

A) Intestinal flagellate
B) Intestinal amoeba
C) Commensal amoeba
D) Ciliate

A

B) Intestinal amoeba

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6
Q

Entamoeba coli is classified as a:

A) Pathogenic amoeba
B) Intestinal protozoan
C) Commensal amoeba
D) Intestinal ciliate

A

C) Commensal amoeba

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7
Q

Endolimax nana/Iodamoeba butschlii is best described as a:

A) Intestinal amoeba
B) Pathogenic flagellate
C) Commensal amoeba
D) Ciliate

A

C) Commensal amoeba

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8
Q

Blastocystis hominis is categorized under:

A) Intestinal amoebas
B) Commensal flagellates
C) Intestinal Protozoans
D) Pathogenic ciliates

A

C) Intestinal Protozoans

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9
Q

Balantidium coli/Gardia lamblia/ Trichomonas vaginali belongs to which group?

A) Amoebas
B) Commensals
C) Intestinal Protozoans
D) Ciliates and Flagellates

A

D) Ciliates and Flagellates

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10
Q

What is the size range of the Entamoeba coli trophozoite?

A) 1-5 um
B) 5-10 um
C) 10-50 um
D) 50-100 um

A

C) 10-50 um

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11
Q

The movement of Entamoeba coli trophozoites is best described as:

A) Rapid and directional
B) Slow and directional
C) Rapid and undirected
D) Sluggish and undirected

A

D) Sluggish and undirected

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12
Q

Which of the following best describes the pseudopodia of Entamoeba coli trophozoites?

A) Narrow and sharp
B) Broad and blunt
C) Absent
D) Long and filamentous

A

B) Broad and blunt

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13
Q

The nuclear appearance of Entamoeba coli trophozoites is characterized by:

A) Regular peripheral chromatin with a small central karyosome
B) Irregular peripheral chromatin with a large central karyosome
C) Irregular peripheral chromatin with a large eccentric karyosome
D) Regular peripheral chromatin with a large eccentric karyosome

A

C) Irregular peripheral chromatin with a large eccentric karyosome

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14
Q

What is the typical size range for an Entamoeba coli cyst?

A) 5-10 um
B) 10-15 um
C) 15-25 um
D) 25-35 um

A

C) 15-25 um

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15
Q

A mature cyst of Entamoeba coli typically contains how many nuclei?

A) 2
B) 4
C) 6
D) 8

A

D) 8

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16
Q

The chromatoid bodies of Entamoeba coli cysts are:

A) Non-existent
B) Rounded and prominent
C) Pointed and less prominent
D) Pointed and very prominent

A

C) Pointed and less prominent

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17
Q

How many nuclei does the trophozoite stage of Endolimax nana have?

A) 1
B) 2
C) 4
D) 8

A

A) 1

18
Q

How many nuclei are present in a mature Endolimax nana cyst?

A) 1
B) 2
C) 4
D) 8

A

C) 4

19
Q

What is the shape characteristic of the Iodamoeba butschlii trophozoite?

A) Spherical
B) Rod-shaped
C) Pear-shaped or teardrop
D) Crescent-shaped

A

C) Pear-shaped or teardrop

20
Q

How many nuclei are present in young Iodamoeba butschlii cysts?

A) 1
B) 2
C) 4
D) 8

A

B) 2

21
Q

What is the characteristic feature of Iodamoeba butschlii not visible in the trophozoite stage but seen in cysts?

A) A single nucleus
B) An axostyle
C) Ovoidal nuclei
D) Four nuclei

A

D) Four nuclei

22
Q

The trophozoite of Iodamoeba butschlii is characterized by having:

A) A single nucleus in the center.
B) A pair of ovoidal nuclei, one on each side of the midline.
C) Multiple nuclei scattered throughout the cytoplasm.
D) No visible nuclei.

A

B) A pair of ovoidal nuclei, one on each side of the midline.

23
Q

Which structure is characteristic of the bilateral symmetry in Iodamoeba butschlii trophozoites?

A) Flagella
B) Cilia
C) Axostyle
D) Pseudopodia

A

C) Axostyle

24
Q

Mature cysts of Iodamoeba butschlii typically contain how many nuclei?

A) One
B) Two
C) Four
D) Eight

A

C) Four

25
Q

The cyst wall of Blastocystis hominis is characterized by being:

A) Thin and transparent
B) Very prominent and thick
C) Permeable and flexible
D) Absent or very thin

A

B) Very prominent and thick

26
Q

What is a distinctive feature of the Blastocystis hominis cyst wall?

A) It is osmophilic
B) It contains spores
C) It has a double membrane
D) It is composed of cellulose

A

A) It is osmophilic

27
Q

A notable feature within the Blastocystis hominis cyst is the:

A) Large central vacuole
B) Multiple small vacuoles
C) Absence of vacuoles
D) Single peripheral vacuole

A

A) Large central vacuole

28
Q

In Blastocystis hominis cysts, the nucleus is located:

A) In the center of the cell
B) In the cytoplasm around the vacuole
C) Within the vacuole
D) On the outer edge of the cell

A

B) In the cytoplasm around the vacuole

29
Q

The shape of Balantidium coli trophozoites is:

A) Spherical
B) Rod-shaped
C) Oval and pointed at the anterior end
D) Irregular

A

C) Oval and pointed at the anterior end

30
Q

Balantidium coli trophozoites are characterized by:

A) Lack of cilia
B) Being covered in cilia
C) Having flagella
D) A smooth surface without any protrusions

A

B) Being covered in cilia

31
Q

What are the shapes of the macronucleus and micronucleus visible in Balantidium coli trophozoites?

A) Both spherical
B) Both kidney-shaped
C) Macronucleus kidney-shaped and micronucleus spherical
D) Macronucleus spherical and micronucleus kidney-shaped

A

D) Macronucleus spherical and micronucleus kidney-shaped

32
Q

What is a distinguishing feature of Balantidium coli cysts?

A) Spherical and ovoid in shape
B) Long and filamentous
C) Square and rigid
D) Triangular with pointed ends

A

A) Spherical and ovoid in shape

33
Q

The cyst wall of Balantidium coli is described as:

A) Thin and permeable
B) Thick and hard
C) Gelatinous and flexible
D) Multilayered and soft

A

B) Thick and hard

34
Q

The shape of Giardia lamblia trophozoites is best described as:

A) Spherical
B) Rod-shaped
C) Pear-shaped or teardrop-shaped
D) Crescent-shaped

A

C) Pear-shaped or teardrop-shaped

35
Q

Giardia lamblia trophozoites are characterized by having:

A) A single nucleus in the center
B) A pair of ovoidal nuclei one on each side of the midline
C) Multiple nuclei scattered throughout the cytoplasm
D) No visible nuclei

A

B) A pair of ovoidal nuclei one on each side of the midline

36
Q

What distinctive line is present in Giardia lamblia trophozoites?

A) Axostyle
B) Cytostome
C) Sutures
D) Flagella

A

A) Axostyle

37
Q

How many nuclei are present in young cysts of Giardia lamblia?

A) One
B) Two
C) Three
D) Four

A

B) Two

38
Q

Mature cysts of Giardia lamblia typically contain how many nuclei?

A) One
B) Two
C) Four
D) Eight

A

C) Four

39
Q

The shape of Trichomonas vaginalis trophozoites is described as:

A) Spherical
B) Rod-shaped
C) Pear-shaped
D) Crescent-shaped

A

C) Pear-shaped

40
Q

What type of motility is observed in Trichomonas vaginalis trophozoites?

A) Gliding
B) “Twitching type”
C) Undulating
D) Spinning

A

B) “Twitching type”

41
Q

How many flagellates does Trichomonas vaginalis have?

A) 3
B) 4
C) 5
D) 6

A

C) 5

42
Q
A

MICRO/PARA (15 decks)

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