Question 1

A definitive host harbors which stage of a parasite?

Accepted Answer

A)   larva
B)   adult
C)   cyst
D)   miracidium
E)   All of the answers are correct.F) All of the above
G) B) and C)

Question 2

In the microscope, you observe multinucleated amoeboid cells with sporangia that form spores. This is a(n)

Accepted Answer

A)   tapeworm.
B)   plasmodial slime mold.
C)   ascomycete.
D)   Euglenozoa.
E)   cellular slime mold.F) B) and E)
G) B) and D)

Question 3

Which of the following organisms is photoautotrophic protozoan?

Accepted Answer

A)   plasmodial slime mold
B)   oomycote
C)   cellular slime mold
D)   Euglena
E)   PhytophthoraF) B) and D)
G) A) and E)

Question 4

The encysted larva of the beef tapeworm is called a

Accepted Answer

A)   cercaria.
B)   metacercaria.
C)   redia.
D)   proglottid.
E)   cysticercus.F) All of the above
G) D) and E) E

Question 5

The cells of plasmodial slime molds can grow to several centimeters in diameter because

Accepted Answer

A)   they distribute nutrients by cytoplasmic streaming.
B)   they have a mouth to ingest nutrients.
C)   they form spores.
D)   the large surface can absorb nutrients.
E)   they have organelles.F) A) and E)
G) A) and B)

Question 6

Both the cellular slime molds and the plasmodial slime molds are members of the phylum Amoebozoa.

Accepted Answer

A) True 
 B)False

Question 7

Most cases of hookworm infection are acquired by ingestion of adult forms in contaminated food or water.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following statements about algae is FALSE?

Accepted Answer

A)   All are unicellular.
B)   They use light as their energy source.
C)   They use CO₂ as their carbon source.
D)   Some are capable of sexual reproduction.
E)   They produce oxygen from hydrolysis of water.F) A) and B)
G) A) and C)

Question 9

Which of the following groups of algae does NOT produce compounds that are toxic to humans?

Accepted Answer

A)   diatoms
B)   green algae
C)   dinoflagellates
D)   red algae
E)   None of the answers is correct; all of these groups of algae produce compounds toxic to humans.F) C) and D)
G) A) and E)

Question 10

Which of the following statements about helminths is FALSE?

Accepted Answer

A)   They are heterotrophic.
B)   They are multicellular animals.
C)   Some have male and female reproductive organs in one animal.
D)   They have eukaryotic cells.
E)   All are parasites.F) A) and E)
G) D) and E)

Question 11

If a larva of Echinococcus granulosus is found in humans, humans are the

Accepted Answer

A)   intermediate host.
B)   definitive host.
C)   infected host.
D)   reservoir.
E)   None of the answers is correct.F) B) and C)
G) C) and D)

Question 12

The insect vectors have six legs and include spiders, ticks, mosquitoes, and lice.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following pairs are mismatched? 1. arthroconidium - formed by fragmentation
2)  sporangiospore - formed within hyphae
3)  conidiospore - formed in a chain
4)  blastoconidium - formed from a bud
5)  chlamydoconidium - formed in a sac

Accepted Answer

A)   2 and 3
B)   4 and 5
C)   3 and 4
D)   2 and 5
E)   1 and 2F) B) and E)
G) A) and E) D

Question 14

Assume you have isolated a multicellular heterotrophic organism that produces coenocytic hyphae, motile zoospores, and cellulose cell walls. It is most likely a(n)

Accepted Answer

A)   ascomycete fungus.
B)   zygomycete fungus.
C)   tapeworm.
D)   oomycote alga.
E)   green alga.F) A) and D)
G) A) and B)

Question 15

Which of the following is a nucleated, unicellular organism that, if you changed the incubation temperature, would form filaments with conidiospores?

Accepted Answer

A)   cellular slime mold
B)   tapeworm
C)   plasmodial slime mold
D)   ascomycete
E)   euglenozoaF) A) and D)
G) A) and B)

Question 16

You see acid-fast oocysts in a fecal sample from a patient who has diarrhea. What is the MOST likely cause?

Accepted Answer

A)   Cryptosporidium
B)   Giardia
C)   diatoms
D)   Entamoeba
E)   TaeniaF) C) and E)
G) B) and C)

Question 17

Ringworm is caused by a(n)

Accepted Answer

A)   fungus.
B)   protozoan.
C)   cestode.
D)   trematode.
E)   nematode.F) A) and E)
G) A) and B) A

Question 18

Which of the following statements regarding protozoa is FALSE?

Accepted Answer

A)   Nearly all protozoa cause disease.
B)   Protozoa are unicellular eukaryotes.
C)   Protozoa are common in water and soil.
D)   Most protozoa reproduce asexually.
E)   Some protozoan pathogens are transmitted by arthropod vectors.F) A) and B)
G) B) and E)

Question 19

Which of the following statements regarding fungi is FALSE?

Accepted Answer

A)   Most fungi grow well in acidic culture condition.
B)   Fungi reproduce by forming asexual or sexual spores.
C)   Most fungi are pathogenic for humans.
D)   Fungi tolerate low moisture conditions.
E)   Fungi are eukaryotic heterotrophs.F) B) and E)
G) B) and C)

Question 20

Helminthic diseases are usually transmitted to humans by

Accepted Answer

A)   aerosols.
B)   vectors.
C)   genitourinary route.
D)   respiratory route.
E)   gastrointestinal route.F) B) and D)
G) B) and C)

Exam 12: The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

A definitive host harbors which stage of a parasite?

Correct AnswerverifiedShow Answer

In the microscope, you observe multinucleated amoeboid cells with sporangia that form spores. This is a(n)

Correct AnswerverifiedShow Answer

Which of the following organisms is photoautotrophic protozoan?

Correct AnswerverifiedShow Answer

The encysted larva of the beef tapeworm is called a

Correct AnswerverifiedE

The cells of plasmodial slime molds can grow to several centimeters in diameter because

Correct AnswerverifiedShow Answer

Both the cellular slime molds and the plasmodial slime molds are members of the phylum Amoebozoa.

Correct AnswerverifiedShow Answer

Most cases of hookworm infection are acquired by ingestion of adult forms in contaminated food or water.

Correct AnswerverifiedShow Answer

Which of the following statements about algae is FALSE?

Correct AnswerverifiedShow Answer

Which of the following groups of algae does NOT produce compounds that are toxic to humans?

Correct AnswerverifiedShow Answer

Which of the following statements about helminths is FALSE?

Correct AnswerverifiedShow Answer

If a larva of Echinococcus granulosus is found in humans, humans are the

Correct AnswerverifiedShow Answer

The insect vectors have six legs and include spiders, ticks, mosquitoes, and lice.

Correct AnswerverifiedShow Answer

Which of the following pairs are mismatched? 1. arthroconidium - formed by fragmentation 2) sporangiospore - formed within hyphae 3) conidiospore - formed in a chain 4) blastoconidium - formed from a bud 5) chlamydoconidium - formed in a sac

Correct AnswerverifiedD

Assume you have isolated a multicellular heterotrophic organism that produces coenocytic hyphae, motile zoospores, and cellulose cell walls. It is most likely a(n)

Correct AnswerverifiedShow Answer

Which of the following is a nucleated, unicellular organism that, if you changed the incubation temperature, would form filaments with conidiospores?

Correct AnswerverifiedShow Answer

You see acid-fast oocysts in a fecal sample from a patient who has diarrhea. What is the MOST likely cause?

Correct AnswerverifiedShow Answer

Ringworm is caused by a(n)

Correct AnswerverifiedA

Which of the following statements regarding protozoa is FALSE?

Correct AnswerverifiedShow Answer

Which of the following statements regarding fungi is FALSE?

Correct AnswerverifiedShow Answer

Helminthic diseases are usually transmitted to humans by

Correct AnswerverifiedShow Answer

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E

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D

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A

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