Question 1

Helminthic diseases are usually transmitted to humans by

Accepted Answer

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

Question 2

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. 
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.

Question 3

The encysted larva of the beef tapeworm is called a

Accepted Answer

A)  cercaria. 
B)  metacercaria. 
C)  redia. 
D)  proglottid. 
E)  cysticercus. 
A)  cercaria. 
B)  metacercaria. 
C)  redia. 
D)  proglottid. 
E)  cysticercus.

Question 4

Ringworm is caused by a(n)

Accepted Answer

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

Question 5

Yeast infections are caused by

Accepted Answer

A)  Saccharomyces cerevisiae. 
B)  Penicillium. 
C)  Histoplasma. 
D)  Candida albicans. 
E)  Aspergillus. 
A)  Saccharomyces cerevisiae. 
B)  Penicillium. 
C)  Histoplasma. 
D)  Candida albicans. 
E)  Aspergillus.

Question 6

Which of the following pairs is mismatched?

Accepted Answer

A)  nematodes  complete digestive tract 
B)  nematodes  many are free-living 
C)  trematodes  flukes 
D)  cestodes  all are free-living 
E)  cestodes  segmented body made of proglottids 
A)  nematodes  complete digestive tract 
B)  nematodes  many are free-living 
C)  trematodes  flukes 
D)  cestodes  all are free-living 
E)  cestodes  segmented body made of proglottids

Question 7

Provide an explanation for the complex life cycles exhibited by parasitic helminths. Cite specific examples in your explanation.

Accepted Answer

Parasitic helminths, which include vario

Question 8

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

Question 9

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. 
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.

Question 10

Cercariae, metacercaria, redia, and sporocysts are all life cycle stages of trematodes.

Accepted Answer

A) True 
 B)False

Question 11

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. 
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.

Question 12

Which of the following pairs is mismatched?

Accepted Answer

A)  teleomorph  produces both sexual and asexual spores 
B)  systemic mycosis  fungal infection of body organs 
C)  dimorphic fungus  grows as a yeast or a mold 
D)  dermatomycosis  fungal infection of the skin 
E)  coenocytic hyphae  hyphae with cross-walls 
A)  teleomorph  produces both sexual and asexual spores 
B)  systemic mycosis  fungal infection of body organs 
C)  dimorphic fungus  grows as a yeast or a mold 
D)  dermatomycosis  fungal infection of the skin 
E)  coenocytic hyphae  hyphae with cross-walls

Question 13

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

Question 14

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

Question 15

What do tapeworms eat?

Accepted Answer

A)  host tissues 
B)  plant matter 
C)  intestinal contents 
D)  intestinal bacteria 
E)  red blood cells 
A)  host tissues 
B)  plant matter 
C)  intestinal contents 
D)  intestinal bacteria 
E)  red blood cells

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

Contrast the economic benefits and the harmful effects of fungi.

Accepted Answer

Fungi can have both economic benefits an

Question 18

The Platyhelminthes group includes roundworms, tapeworms, and flukes.

Accepted Answer

A) True 
 B)False

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

Helminthic diseases are usually transmitted to humans by

Which of the following statements regarding protozoa is FALSE?

The encysted larva of the beef tapeworm is called a

Ringworm is caused by a(n)

Yeast infections are caused by

Which of the following pairs is mismatched?

Provide an explanation for the complex life cycles exhibited by parasitic helminths. Cite specific examples in your explanation.

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

Which of the following statements about helminths is FALSE?

Cercariae, metacercaria, redia, and sporocysts are all life cycle stages of trematodes.

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

Which of the following pairs is mismatched?

A definitive host harbors which stage of a parasite?

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

What do tapeworms eat?

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

Contrast the economic benefits and the harmful effects of fungi.

The Platyhelminthes group includes roundworms, tapeworms, and flukes.

The Microbial World and You

Chemical Principles

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

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