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Parasitology MTAP > SELECT SPOROZOA: PLASMODIUM AND BABESIA Quick Quiz > Flashcards

SELECT SPOROZOA: PLASMODIUM AND BABESIA Quick Quiz Flashcards

1
Q

The infective stage of Plasmodium is (are) the:

A. Merozoites
B. Oocyst
C. Sporozoites
D. Gametocytes

A

C. Sporozoites

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2
Q

The best time to collect blood for Plasmodium parasites is:

A. Between paroxysms
B. During paroxysms
C. Morning
D. Evening

A

A. Between paroxysms

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3
Q

A paroxysm is:

A. An allergic reaction
B. A periodic episode characterized by fever, chills, sweats, and fatigue
C. Both A and B are correct.
D. None of the above

A

C. Both A and B are correct.

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4
Q

Which morphologic characteristic may help in distinguishing P. vivax from P. falciparum? (Objective 6-11)

A. Hemozoin
B. Schüffner’s dots
C. 72-hour paroxysm
D. None of the above

A

B. Schüffner’s dots

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5
Q

P. vivax characteristically invades:

A. Immature RBCs
B. Senescent RBCs
C. All RBCs
D. Lymphocytes

A

A. Immature RBCs

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6
Q

The incubation period for P. vivax is generally:

A. 6 to 8days
B. 7 to 10 days
C. 12 to 24 days
D. 10 to 17 days

A

B. 7 to 10 days

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7
Q

Which morphologic form would be the best choice for distinguishing between P. vivax and P. ovale?

A. Mature schizont
B. Ring form
C. Early trophozoite
D. Immature schizont

A

A. Mature schizont

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8
Q

In which geographic regions would the laboratorian most likely suspect P. ovale as the infecting agent?

A. Tropical Africa
B. Asia
C. South America
D. All of the above

A

D. All of the above

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9
Q

Which of the following is considered an antimalarial medication?

A. Amoxicillin
B. Erythromycin
C. Chloroquine
D. Dicyclomine

A

C. Chloroquine

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10
Q

Which morphologic form is not typically seen in infec- tions of P. malariae?

A. Mature schizont
B. Ring form
C. Immature schizont
D. Macrogametocyte

A

B. Ring form

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11
Q

Which of the following are morphologic features of P. malariae?

A. Schüffner’s dots
B. Ziemann’s dots
C. Maurer’s dots
D. None of the above

A

B. Ziemann’s dots

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12
Q

Which of the following is not a prevention and control measure for malaria?

A. Wearing the hair up
B. Following prophylactic therapy when traveling to malaria-endemic areas
C. Bed netting
D. Proper clothing, such as long-sleeved shirt and long pants

A

A. Wearing the hair up

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13
Q

What age of red blood cell does P. falciparum typically invade?

A. Mature red blood cells
B. Immature red blood cells
C. All red blood cells, regardless of age
D. Does not invade red blood cells

A

C. All red blood cells, regardless of age

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14
Q

P. falciparum is commonly found in the United States.

A. True
B. False

A

B. False

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15
Q

Black water fever can be described by which of the following:

A. Marked hemoglobinuria
B. Kidney involvement in P. falciparum infections
C. Caused by P. falciparum–induced red blood cell destruction
D. All of the above

A

D. All of the above

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16
Q

Humans are an accidental host of Babesia species.

A. True
B. False

A

A. True

17
Q

The specimen of choice for the recovery of Babesia is: (Objective 6-10)
A. Tissue
B. Cerebral spinal fluid (CSF)
C. Stool
D. Blood

A

D. Blood

18
Q

Babesiosis is characterized by all the following except:

A. Trophozoites resembling the ring form seen in Plasmodium infections
B. A mild to severe hemolytic anemia
C. Fever periodicity
D. None of the above

A

C. Fever periodicity

19
Q

Which of the following are laboratory diagnostic pro- cedures is recommended for specifically identifying T. microti?

A. Thick and thin blood films
B. Serologic testing
C. PCR techniques
D. Both B and C are correct.
E. None of the above

A

D. Both B and C are correct.

20
Q

Which of the following is not a location known for infection by T. microti?

A. California
B. North Carolina
C. Mexico
D. Nantucket

A

A. California

21
Q

For which patient would babesiosis be more severe?

A. The splenectomized
B. The patient with Babesia divergens
C. Older adults
D. All of the above

A

D. All of the above

22
Q

The infective stage of the Plasmodium parasite and the Babesia parasite for humans is the:

A. Merozoite
B. Trophozoite
C. Gametocyte
D. Sporozoite

A

D. Sporozoite

23
Q

What is the name of the dormant parasite form found in patients with Plasmodium ovale and Plasmodium vivax infections?

A. Trophozoites
B. Sporozoites
C. Hypnozoites
D. Gametocytes

A

C. Hypnozoites

24
Q

The species of mosquito most commonly known to serve as a vector for the genus Plasmodium is:

A. Ixodes
B. Anopheles
C. Culex
D. Glossina

A

B. Anopheles

25
Q

Which of the following is a self-limiting infection characterized by a gradual onset of headache, chills, sweating, and fatigue that demonstrates no periodicity?

A. Ehrlichia phagocytophila
B. Babesia microti
C. Plasmodium vivax
D. Plasmodium ovale

A

B. Babesia microti

26
Q

Giemsa-stained blood smears demonstrate normal-sized red blood cells containing ring form trophozoites in pairs and tetrads, without pigment or stippling. Which para- site listed best fits this description?

A. Babesia divergens
B. Plasmodium falciparum
C. Plasmodium vivax
D. Plasmodium malariae

A

A. Babesia divergens

27
Q

Sexual reproduction of Babesia species takes place in the:

A. Human gut
B. Red blood cells
C. Tick
D. Parenchymal cells of the liver

A

C. Tick

28
Q

Which species of Plasmodium is character- ized by a rosette arrangement of merozo- ites and the presence of Schüffner’s dots in the red blood cells?

A. Plasmodium vivax
B. Plasmodium ovale
C. Plasmodium falciparum
D. Plasmodium malariae

A

B. Plasmodium ovale

29
Q

Babesia spp. undergo an exoerythrocytic cycle.

A. True
B. False

A

B. False

30
Q

Ziemann’s dots, band form trophozoites, and 72-hour periodicity of paroxysms is indicative of infection with which Plasmodium species?

A. Plasmodium vivax
B. Plasmodium ovale
C. Plasmodium falciparum
D. Plasmodium malariae

A

D. Plasmodium malariae

31
Q

Which of the following would be an advised drug therapy for an uncomplicated case of babesiosis?

A. Clindamycin-quinine
B. Atovaquone-proguanil
C. Penicillin-aspirin
D. Erythromycin-chloroquine

A

A. Clindamycin-quinine

Parasitology MTAP (6 decks)

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