Question 1

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. 
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.

Question 2

Protist locomotion is accomplished by the contraction of muscle fibers.

Accepted Answer

A) True 
 B)False

Question 3

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) elastin 
A) Amylose 
B) Collagen 
C) Cellulose 
D) elastin

Question 4

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) osmotrophic 
A) autotrophic 
B) heterotrophic 
C) mixotrophic 
D) osmotrophic

Question 5

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. 
A) foraminifera. 
B) sporozoans. 
C) phytomastigotes. 
D) trypanosomes.

Question 6

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

Question 7

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. 
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.

Question 8

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

Question 9

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 amoebas 
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 amoebas

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

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

Question 12

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) ciliates 
A) sporozoans 
B) protists 
C) oomycetes 
D) ciliates

Question 13

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. 
A) dinoflagellates. 
B) diatoms. 
C) kelps. 
D) euglenoids.

Question 14

How do humans use red algae polysaccharides?

Accepted Answer

A) Thickeners 
B) Herbicides 
C) Adhesives 
D) Detergents 
A) Thickeners 
B) Herbicides 
C) Adhesives 
D) Detergents

Question 15

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 walls 
A) Many lysosomes 
B) Locomotion via several flagella 
C) The presence of chloroplasts 
D) Silicon dioxide cell walls

Question 16

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. 
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.

Question 17

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. 
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.

Question 18

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. 
A) They belong to the same phylum as Paramecium. 
B) They do not have flagella. 
C) They have a pellicle. 
D) They lack chloroplasts.

Question 19

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

Accepted Answer

A) tests. 
B) pseudopodia. 
C) cilia. 
D) flagella. 
A) tests. 
B) pseudopodia. 
C) cilia. 
D) flagella.

Question 20

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

Exam 29: Protists

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

Protist locomotion is accomplished by the contraction of muscle fibers.

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?

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

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

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

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

The common characteristic of Alveolata is

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

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

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

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

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

How do humans use red algae polysaccharides?

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

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

Which of the following statements about malaria is false?

Which of the following is true about Euglena?

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

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

The Science of Biology

The Nature of Molecules and the Properties of Water

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes, Mapping, and the Meiosis-Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

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Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics, Phylogenies, and Comparative Biology

Genome Evolution

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The Origin and Diversity of Life

Viruses

Prokaryotes

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Animal Diversity and the Evolution of Body Plans

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Plant Nutrition and Soils

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Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

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Osmotic Regulation and the Urinary System

The Immune System

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Animal Development

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