Question 1

The tropical diseases such as African sleeping sickness, Chagas disease, and leishmaniasis are caused by

Accepted Answer

A)  foraminifera.
B)  sporozoans.
C)  phytomastigotes.
D)  trypanosomes.E) B) and C)
F) None of the above

Question 2

Conjugating ciliates exchange a pair of haploid micronuclei that undergo mitosis as a diploid micronucleus, while the macronucleus in each

Accepted Answer

A)  is expelled from the cell.
B)  disintegrates.
C)  divides by meiosis.
D)  fuses with each other.E) A) and D)
F) B) and C)

Question 3

Transferring Euglena into a dark environment results in the loss of photosynthetic pigment.What conclusion does this support?

Accepted Answer

A)  Euglenoids are obligate photoautotrophs.
B)  Light triggers heterotrophy.
C)  Euglenoids are closely related to plants.
D)  Euglenoids are neither plant-like or animal-like protists.E) B) and C)
F) None of the above

Question 4

During cell division the progeny of a trypanosome express a different VSG gene than their parents.Why is this done?

Accepted Answer

A)  To hide from the host's immune system.
B)  To signal endocytosis of the parasites.
C)  VSG genes inhibit phagocytosis.
D)  VSG genes activate photoheterotrophy.E) C) and D)
F) A) and C)

Question 5

How do humans use red algae polysaccharides?

Accepted Answer

A)  Thickeners
B)  Herbicides
C)  Adhesives
D)  DetergentsE) A) and C)
F) C) and D)

Question 6

Members of the Euglenozoa move within their habitats with the aid of

Accepted Answer

A)  tests.
B)  pseudopodia.
C)  cilia.
D)  flagella.E) B) and D)
F) All of the above

Question 7

The polysaccharides agarose and carrageenan are isolated from red algae for commercial use.These polysaccharides are found in cell walls.What plant polysaccharide are they analogous to?

Accepted Answer

A)  Amylose
B)  Collagen
C)  Cellulose
D)  elastinE) A) and B)
F) None of the above

Question 8

Protist locomotion is accomplished by the contraction of muscle fibers.

Accepted Answer

A) True 
 B)False

Question 9

The common characteristic of Alveolata is

Accepted Answer

A)  a single, unique mitochondria.
B)  a layer of flattened vesicles beneath the plasma membrane.
C)  silica covering.
D)  funnel-shaped, contractile collar.E) A) and B)
F) B) and C)

Question 10

All apicomplexans are nonmotile, spore forming, and live as __________ in animals.

Accepted Answer

The answer of All apicomplexans are nonmotile, spore forming, and...

Question 11

Which of the following statements about malaria is false?

Accepted Answer

A)  Fertilization occurs within a mosquito.
B)  Merozoites are found inside red blood cells.
C)  Gametocytes develop from merozoites.
D)  Sporozoites are only found within a mosquito.E) A) and B)
F) B) and C)

Question 12

Some photosynthetic euglenoids can also ingest dissolved or particulate food.Which one of the following terms would best describe such a protist?

Accepted Answer

A)  autotrophic
B)  heterotrophic
C)  mixotrophic
D)  osmotrophicE) A) and D)
F) A) and C)

Question 13

The plasmodial and cellular slime molds differ in a number of features.Select the following choice that is not a difference.

Accepted Answer

A)  aggregation of individuals when conditions worsen
B)  ability to form spore-producing structures
C)  ability to form an acellular plasmodium
D)  ability to form individual amoebasE) A) and B)
F) A) and C)

Question 14

Which of the following statements would not be consistent with the theory for the endosymbiotic origin of mitochondria and chloroplasts?

Accepted Answer

A)  Mitochondria and chloroplasts have their own DNA enclosed within a nuclear envelope.
B)  The composition of the outer membrane of chloroplasts and mitochondria is similar to the plasma membrane of eukaryotic cells.
C)  The composition of the inner membrane of chloroplasts and mitochondria is similar to the plasma membrane of prokaryotic cells.
D)  Mitochondria and chloroplasts have some enzymes unique to them.E) A) and C)
F) All of the above

Question 15

Which of the following is true about Euglena?

Accepted Answer

A)  They belong to the same phylum as Paramecium.
B)  They do not have flagella.
C)  They have a pellicle.
D)  They lack chloroplasts.E) None of the above
F) A) and D)

Question 16

What would be strong evidence to suggest a protist is phagotrophic?

Accepted Answer

A)  An abundance of lysosomes
B)  Locomotion using polar flagella
C)  Silicon dioxide cell walls
D)  Benthic lifestyleE) B) and D)
F) A) and D)

Question 17

Organisms that are characterized by being unicellular, photosynthetic, and having double shells made of silica are known as

Accepted Answer

A)  dinoflagellates.
B)  diatoms.
C)  kelps.
D)  euglenoids.E) C) and D)
F) A) and D)

Question 18

All ________ have two very different types of nuclei within their cells, small micronuclei and larger macronuclei.

Accepted Answer

A)  sporozoans
B)  protists
C)  oomycetes
D)  ciliatesE) B) and C)
F) A) and C)

Question 19

In addition to their characteristic cilia, most ciliates contain two types of

Accepted Answer

A)  nuclei.
B)  chloroplasts.
C)  flagella.
D)  wood-digesting enzymes.E) C) and D)
F) A) and B)

Question 20

What would be strong evidence to suggest a protist is phototrophic?

Accepted Answer

A)  Many lysosomes
B)  Locomotion via several flagella
C)  The presence of chloroplasts
D)  Silicon dioxide cell wallsE) B) and D)
F) All of the above

Exam 29: Protists

Which of the following is true about Euglena?

Correct AnswerverifiedShow Answer

Which of the following statements would not be consistent with the theory for the endosymbiotic origin of mitochondria and chloroplasts?

Correct AnswerverifiedShow Answer

Conjugating ciliates exchange a pair of haploid micronuclei that undergo mitosis as a diploid micronucleus, while the macronucleus in each

Correct AnswerverifiedShow Answer

The polysaccharides agarose and carrageenan are isolated from red algae for commercial use.These polysaccharides are found in cell walls.What plant polysaccharide are they analogous to?

Correct AnswerverifiedShow Answer

All ________ have two very different types of nuclei within their cells, small micronuclei and larger macronuclei.

Correct AnswerverifiedShow Answer

All apicomplexans are nonmotile, spore forming, and live as __________ in animals.

Correct AnswerverifiedShow Answer

What would be strong evidence to suggest a protist is phototrophic?

Correct AnswerverifiedShow Answer

The tropical diseases such as African sleeping sickness, Chagas disease, and leishmaniasis are caused by

Correct AnswerverifiedShow Answer

Some photosynthetic euglenoids can also ingest dissolved or particulate food.Which one of the following terms would best describe such a protist?

Correct AnswerverifiedShow Answer

Which of the following statements about malaria is false?

Correct AnswerverifiedShow Answer

The common characteristic of Alveolata is

Correct AnswerverifiedShow Answer

During cell division the progeny of a trypanosome express a different VSG gene than their parents.Why is this done?

Correct AnswerverifiedShow Answer

Protist locomotion is accomplished by the contraction of muscle fibers.

Correct AnswerverifiedShow Answer

In addition to their characteristic cilia, most ciliates contain two types of

Correct AnswerverifiedShow Answer

The plasmodial and cellular slime molds differ in a number of features.Select the following choice that is not a difference.

Correct AnswerverifiedShow Answer

Members of the Euglenozoa move within their habitats with the aid of

Correct AnswerverifiedShow Answer

Transferring Euglena into a dark environment results in the loss of photosynthetic pigment.What conclusion does this support?

Correct AnswerverifiedShow Answer

What would be strong evidence to suggest a protist is phagotrophic?

Correct AnswerverifiedShow Answer

How do humans use red algae polysaccharides?

Correct AnswerverifiedShow Answer

Organisms that are characterized by being unicellular, photosynthetic, and having double shells made of silica are known as

Correct AnswerverifiedShow Answer

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