Question 1

Massive hemolysis leading to blackwater fever is a characteristic clinical finding for which of the following parasites?

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) A) and B)
F) A) and C)

Question 2

Babesia spp. infections may be confused with which other parasite?

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) B) and C)
F) B) and D)

Question 3

Plasmodium vivax and Plasmodium ovale are similar for all of the following EXCEPT both:

Accepted Answer

A)   Can cause true relapses
B)   Have Schüffner's dots
C)   Preferentially invade reticulocytes
D)   Have only single-ring formsE) None of the above
F) B) and C)

Question 4

The infective stage for Toxoplasma gondii in humans is the:

Accepted Answer

A)   Merozoite
B)   Öocyst
C)   Sarcocyst
D)   SporozoiteE) None of the above
F) A) and D)

Question 5

Which of the sporozoa is considered to be indigenous to the United States?

Accepted Answer

A)   Babesia microti
B)   Plasmodium falciparum
C)   Plasmodium malariae
D)   Plasmodium vivaxE) A) and B)
F) B) and C)

Question 6

Local city water supplies have been sources of parasitic infections. The most common organisms implicated in these events include:

Accepted Answer

A)   Cryptosporidium parvum and Giardia lamblia
B)   Diphyllobothrium fragilis and Entamoeba histolytica
C)   Giardia lamblia and Cystoisospora (Isospora)  belli
D)   Cystoisospora belli and Entamoeba histolyticaE) None of the above
F) A) and B) A

Question 7

An AIDS patient suffering with chronic diarrhea was tested for intestinal parasites. Among the testing procedures was an acid-fast stain on a direct fecal smear. The smear revealed red-stained, round structures measuring 4 µm in diameter. The most likely parasite is:

Accepted Answer

A)   Blastocystis hominis
B)   Cryptosporidium parvum
C)   Cyclospora spp.
D)   MicrosporidiaE) None of the above
F) A) and B) B

Question 8

Name the parasite shown in the following image:

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) A) and B)
F) All of the above

Question 9

Name the parasite shown in the following image:

Accepted Answer

A)   Babesia microti
B)   Plasmodium falciparum
C)   Plasmodium malariae
D)   Plasmodium vivaxE) A) and B)
F) B) and D)

Question 10

Outbreaks of diarrhea have been caused by a parasite that has been associated with raspberries, strawberries, herbs, and baby lettuces. The most likely parasite is:

Accepted Answer

A)   Cryptosporidium parvum
B)   Cyclospora cayetanensis
C)   Giardia lamblia
D)   Cystoisospora belliE) A) and B)
F) All of the above

Question 11

Which of the following parasites is able to cause nosocomial infections if "enteric precautions" are not maintained for patients with severe diarrhea?

Accepted Answer

A)   Cryptosporidium parvum
B)   Enterobius vermicularis
C)   Giardia lamblia
D)   Cystoisospora belliE) A) and C)
F) None of the above A

Question 12

The malaria parasite species characterized by a single ameboid trophozoite and surrounded by red-stained Schüffner's dots is:

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) B) and C)
F) None of the above

Question 13

The malaria parasite species characterized by a crescent-shaped gametocyte is:

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) All of the above
F) None of the above

Question 14

The malaria parasite species characterized by a schizont containing 8 to 12 merozoites is:

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) A) and D)
F) B) and C)

Question 15

A fecal smear was stained using acid-fast reagents. Examination of the smear revealed round, red forms measuring 8 to 10 µm in diameter. The most likely parasite is:

Accepted Answer

A)   Microsporidium spp.
B)   Cystoisospora belli
C)   Cyclospora spp.
D)   Cryptosporidium parvumE) B) and C)
F) A) and D)

Question 16

Name the parasite shown in the following image:

Accepted Answer

A)   Plasmodium falciparum
B)   Plasmodium malariae
C)   Plasmodium ovale
D)   Plasmodium vivaxE) All of the above
F) C) and D)

Exam 6: Protozoa: Sporozoa

Massive hemolysis leading to blackwater fever is a characteristic clinical finding for which of the following parasites?

Correct Answer
verified

Babesia spp. infections may be confused with which other parasite?

Correct Answer
verified

Plasmodium vivax and Plasmodium ovale are similar for all of the following EXCEPT both:

Correct Answer
verified

The infective stage for Toxoplasma gondii in humans is the:

Correct Answer
verified

Which of the sporozoa is considered to be indigenous to the United States?

Correct Answer
verified

Local city water supplies have been sources of parasitic infections. The most common organisms implicated in these events include:

Correct Answer
verified
A

An AIDS patient suffering with chronic diarrhea was tested for intestinal parasites. Among the testing procedures was an acid-fast stain on a direct fecal smear. The smear revealed red-stained, round structures measuring 4 µm in diameter. The most likely parasite is:

Correct Answer
verified
B

Name the parasite shown in the following image:

Correct Answer
verified

Name the parasite shown in the following image:

Correct Answer
verified

Outbreaks of diarrhea have been caused by a parasite that has been associated with raspberries, strawberries, herbs, and baby lettuces. The most likely parasite is:

Correct Answer
verified

Which of the following parasites is able to cause nosocomial infections if "enteric precautions" are not maintained for patients with severe diarrhea?

Correct Answer
verified
A

The malaria parasite species characterized by a single ameboid trophozoite and surrounded by red-stained Schüffner's dots is:

Correct Answer
verified

The malaria parasite species characterized by a crescent-shaped gametocyte is:

Correct Answer
verified

The malaria parasite species characterized by a schizont containing 8 to 12 merozoites is:

Correct Answer
verified

A fecal smear was stained using acid-fast reagents. Examination of the smear revealed round, red forms measuring 8 to 10 µm in diameter. The most likely parasite is:

Correct Answer
verified

Name the parasite shown in the following image:

Correct Answer
verified

Exam 6: Protozoa: Sporozoa

Massive hemolysis leading to blackwater fever is a characteristic clinical finding for which of the following parasites?

Correct AnswerverifiedShow Answer

Babesia spp. infections may be confused with which other parasite?

Correct AnswerverifiedShow Answer

Plasmodium vivax and Plasmodium ovale are similar for all of the following EXCEPT both:

Correct AnswerverifiedShow Answer

The infective stage for Toxoplasma gondii in humans is the:

Correct AnswerverifiedShow Answer

Which of the sporozoa is considered to be indigenous to the United States?

Correct AnswerverifiedShow Answer

Local city water supplies have been sources of parasitic infections. The most common organisms implicated in these events include:

Correct AnswerverifiedA

An AIDS patient suffering with chronic diarrhea was tested for intestinal parasites. Among the testing procedures was an acid-fast stain on a direct fecal smear. The smear revealed red-stained, round structures measuring 4 µm in diameter. The most likely parasite is:

Correct AnswerverifiedB

Name the parasite shown in the following image:

Correct AnswerverifiedShow Answer

Name the parasite shown in the following image:

Correct AnswerverifiedShow Answer

Outbreaks of diarrhea have been caused by a parasite that has been associated with raspberries, strawberries, herbs, and baby lettuces. The most likely parasite is:

Correct AnswerverifiedShow Answer

Which of the following parasites is able to cause nosocomial infections if "enteric precautions" are not maintained for patients with severe diarrhea?

Correct AnswerverifiedA

The malaria parasite species characterized by a single ameboid trophozoite and surrounded by red-stained Schüffner's dots is:

Correct AnswerverifiedShow Answer

The malaria parasite species characterized by a crescent-shaped gametocyte is:

Correct AnswerverifiedShow Answer

The malaria parasite species characterized by a schizont containing 8 to 12 merozoites is:

Correct AnswerverifiedShow Answer

A fecal smear was stained using acid-fast reagents. Examination of the smear revealed round, red forms measuring 8 to 10 µm in diameter. The most likely parasite is:

Correct AnswerverifiedShow Answer

Name the parasite shown in the following image:

Correct AnswerverifiedShow Answer

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A

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B

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A

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