Question 1

Which of the following terms DOES NOT describe a basic type of protistan nutrition?

Accepted Answer

A)   phagotrophic
B)   eutrophic
C)   osmotrophic
D)   autotrophic
E)   mixotrophicF) A) and E)
G) None of the above

Question 2

Sleeping sickness is transmitted by:

Accepted Answer

A)   mosquitoes
B)   tsetse flies
C)   sand fleas
D)   ticks
E)   drinking contaminated waterF) A) and D)
G) B) and E) B

Question 3

Diatoms reproduce by:

Accepted Answer

A)   binary fission
B)   a sporic life cycle
C)   a gametic life cycle
D)   a zygotic life cycle
E)   spontaneous generationF) A) and E)
G) All of the above

Question 4

Algae appear in colors of gold, brown, red, or green. The significance of that fact is:

Accepted Answer

A)   These pigments absorb the quality of light prevalent in their various preferred habitats and enhance their photosynthetic ability.
B)   These pigments camouflage them from grazers.
C)   These pigments warn grazers of their toxic properties.
D)   These pigments are waste products stored in the tissues.
E)   All of the other choices provided are incorrect.F) A) and B)
G) A) and C) A

Question 5

Phagocytosis (Phagotrophy)  is:

Accepted Answer

A)   attack of cells by bacteriophages
B)   the phases through which cells pass during division
C)   the disintegration of a cell
D)   the attachment of protist cells to a substrate
E)   the capture of food particles by a cellF) A) and D)
G) None of the above

Question 6

In a zygotic life cycle:

Accepted Answer

A)   Haploid cells form gametes that fuse to produce thick-walled diploid zygotes capable of suviving stressful conditions.
B)   There is an alternation of generations.
C)   The zygote undergoes meiosis and produces many heat-resistant spores that increase the population size and aid in dispersal.
D)   Haploid cells form spores that in turn fuse to produce thick-walled zygotes capable of surviving stressful conditions.
E)   none of the choices provided.F) All of the above
G) A) and E)

Question 7

The photosynthetic systems of algae living in deeper water are adapted to absorb more of the light of which of the following colors?

Accepted Answer

A)   yellow
B)   red-orange
C)   blue-green
D)   purple
E)   whiteF) A) and E)
G) A) and D)

Question 8

Exchange of genetic material in ciliates is known as:

Accepted Answer

A)   macronucleosis
B)   micronucleosis
C)   conjugation
D)   panmixis
E)   myxomycetosisF) B) and D)
G) A) and E)

Question 9

Which of the following statements is NOT true of Trichomonas vaginalis?

Accepted Answer

A)   It attacks the human genitourinary tract.
B)   It lacks true mitochondria.
C)   It has hydrogenosomes.
D)   It has mitosomes.
E)   It has a flagellum.F) D) and E)
G) A) and B)

Question 10

Diatoms have a special problem:

Accepted Answer

A)   because their + and - mating strains are nonmotile and have to be dispersed by currents
B)   because their heavy siliceous shells impede conjugation
C)   because they must await a chemical signal from a fish before they can become mobile and search for mating partners
D)   because their two halves fit like the lid and body of a pillbox and on repeated cell divisions the half that is overlapped gets progressively smaller
E)   because the gametes experience difficulty in exiting the overlapping halves of their siliceous shellsF) B) and E)
G) B) and C)

Question 11

The immediate ancestors of plants were:

Accepted Answer

A)   charophyceans
B)   red algae
C)   kelp
D)   cyanobacteria
E)   dinoflagellates with plastidsF) B) and C)
G) C) and D)

Question 12

Plasmodium sporozoites produce merozoites in the human:

Accepted Answer

A)   blood
B)   brain
C)   lymph glands
D)   liver
E)   spleenF) A) and B)
G) A) and E)

Question 13

Which of the following are not used by protists for protection against predators?

Accepted Answer

A)   protective coverings that are hard, tough, or slimy
B)   toxins
C)   gamma radiation
D)   shooting sharp projectiles
E)   spinesF) B) and C)
G) A) and E) C

Question 14

Endosymbiosis gave rise to:

Accepted Answer

A)   chloroplasts
B)   mitochondria
C)   nuclei
D)   both chloroplasts and mitochondria
E)   none of the other choices providedF) D) and E)
G) C) and D)

Question 15

Which of the following statements is NOT true of protistan cysts?

Accepted Answer

A)   They may arise from asexual reproduction.
B)   They may arise from sexual reproduction.
C)   Their consumption can lead to human health problems.
D)   They facilitate the spread of pathogens from one host to another.
E)   They attach to host cells by small hooks.F) A) and E)
G) C) and E)

Question 16

Zoospores are single flagellated cells that disperse otherwise nonmotile protists.

Accepted Answer

A) True 
 B)False

Question 17

The dinoflagellate Pfisteria is an important protist. Which of the following statements DOES NOT describe its attributes?

Accepted Answer

A)   It causes nervous disorders in humans.
B)   It uses toxins to attack fish which it then consumes.
C)   It lies dormant on the bottom until stimulated by chemicals from fish.
D)   It is a major cause of food poisoning in humans.
E)   Its toxins damage fish skin thereby increasing exposure to the pathogen.F) None of the above
G) A) and E)

Question 18

Phytophthora, a pathogen attacking a wide variety of plants, is a(n) :

Accepted Answer

A)   alga
B)   protist
C)   lichen
D)   fungus
E)   bacteriumF) All of the above
G) C) and D)

Question 19

The adaptive significance of sexual reproduction is that it:

Accepted Answer

A)   diversifies genotypes thereby allowing faster evolutionary responses to changing environments
B)   is more fun than asexual reproduction
C)   is more rapid than sexual reproduction
D)   promotes the dispersal of individuals more effectively
E)   All of the other choices provided are incorrectF) B) and E)
G) None of the above

Question 20

Bioluminescence is:

Accepted Answer

A)   emission of flashes of light by organisms
B)   capture of moonlight for nocturnal photosynthesis
C)   light absorbed by other pigments and transferred to chlorophyll a
D)   the fluorescing of Gram-positive bacteria
E)   none of the other choices providedF) C) and D)
G) A) and C)

Exam 28: Protists

Which of the following terms DOES NOT describe a basic type of protistan nutrition?

Correct AnswerverifiedShow Answer

Sleeping sickness is transmitted by:

Correct AnswerverifiedB

Diatoms reproduce by:

Correct AnswerverifiedShow Answer

Algae appear in colors of gold, brown, red, or green. The significance of that fact is:

Correct AnswerverifiedA

Phagocytosis (Phagotrophy) is:

Correct AnswerverifiedShow Answer

In a zygotic life cycle:

Correct AnswerverifiedShow Answer

The photosynthetic systems of algae living in deeper water are adapted to absorb more of the light of which of the following colors?

Correct AnswerverifiedShow Answer

Exchange of genetic material in ciliates is known as:

Correct AnswerverifiedShow Answer

Which of the following statements is NOT true of Trichomonas vaginalis?

Correct AnswerverifiedShow Answer

Diatoms have a special problem:

Correct AnswerverifiedShow Answer

The immediate ancestors of plants were:

Correct AnswerverifiedShow Answer

Plasmodium sporozoites produce merozoites in the human:

Correct AnswerverifiedShow Answer

Which of the following are not used by protists for protection against predators?

Correct AnswerverifiedC

Endosymbiosis gave rise to:

Correct AnswerverifiedShow Answer

Which of the following statements is NOT true of protistan cysts?

Correct AnswerverifiedShow Answer

Zoospores are single flagellated cells that disperse otherwise nonmotile protists.

Correct AnswerverifiedShow Answer

The dinoflagellate Pfisteria is an important protist. Which of the following statements DOES NOT describe its attributes?

Correct AnswerverifiedShow Answer

Phytophthora, a pathogen attacking a wide variety of plants, is a(n) :

Correct AnswerverifiedShow Answer

The adaptive significance of sexual reproduction is that it:

Correct AnswerverifiedShow Answer

Bioluminescence is:

Correct AnswerverifiedShow Answer

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B

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A

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C

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