Question 1

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

Question 2

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. 
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. A

Question 3

Sleeping sickness is transmitted by:

Accepted Answer

A)  mosquitoes 
B)  tsetse flies 
C)  sand fleas 
D)  ticks 
E)  drinking contaminated water 
A)  mosquitoes 
B)  tsetse flies 
C)  sand fleas 
D)  ticks 
E)  drinking contaminated water B

Question 4

Exchange of genetic material in ciliates is known as:

Accepted Answer

A)  macronucleosis 
B)  micronucleosis 
C)  conjugation 
D)  panmixis 
E)  myxomycetosis 
A)  macronucleosis 
B)  micronucleosis 
C)  conjugation 
D)  panmixis 
E)  myxomycetosis

Question 5

The immediate ancestors of plants were:

Accepted Answer

A)  charophyceans 
B)  red algae 
C)  kelp 
D)  cyanobacteria 
E)  dinoflagellates with plastids 
A)  charophyceans 
B)  red algae 
C)  kelp 
D)  cyanobacteria 
E)  dinoflagellates with plastids

Question 6

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. 
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.

Question 7

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 incorrect 
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 incorrect

Question 8

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)  white 
A)  yellow 
B)  red-orange 
C)  blue-green 
D)  purple 
E)  white

Question 9

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 shells 
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 shells

Question 10

Plasmodium sporozoites produce merozoites in the human:

Accepted Answer

A)  blood 
B)  brain 
C)  lymph glands 
D)  liver 
E)  spleen 
A)  blood 
B)  brain 
C)  lymph glands 
D)  liver 
E)  spleen

Question 11

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

Accepted Answer

A)  alga 
B)  protist 
C)  lichen 
D)  fungus 
E)  bacterium 
A)  alga 
B)  protist 
C)  lichen 
D)  fungus 
E)  bacterium

Question 12

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. 
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.

Question 13

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 provided 
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 provided

Question 14

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. 
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.

Question 15

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)  mixotrophic 
A)  phagotrophic 
B)  eutrophic 
C)  osmotrophic 
D)  autotrophic 
E)  mixotrophic

Question 16

Endosymbiosis gave rise to:

Accepted Answer

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

Question 17

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 generation 
A)  binary fission 
B)  a sporic life cycle 
C)  a gametic life cycle 
D)  a zygotic life cycle 
E)  spontaneous generation

Question 18

Zoospores are single flagellated cells that disperse otherwise nonmotile protists.

Accepted Answer

A) True 
 B)False

Question 19

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 cell 
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 cell

Question 20

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. 
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.

Exam 28: Protists

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

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

Sleeping sickness is transmitted by:

Exchange of genetic material in ciliates is known as:

The immediate ancestors of plants were:

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

The adaptive significance of sexual reproduction is that it:

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

Diatoms have a special problem:

Plasmodium sporozoites produce merozoites in the human:

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

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

Bioluminescence is:

In a zygotic life cycle:

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

Endosymbiosis gave rise to:

Diatoms reproduce by:

Zoospores are single flagellated cells that disperse otherwise nonmotile protists.

Phagocytosis (Phagotrophy) is:

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

An Introduction to Biology

The Chemical Basis of Life I: Atoms, Molecules, and Water

The Chemical Basis of Life II: Organic Molecules

General Features of Cells

Membrane Structure, Synthesis, and Transport

An Introduction to Energy, Enzymes, and Metabolism

Cellular Respiration, Fermentation, and Secondary Metabolism

Photosynthesis

Cell Communication

Multicellularity

Nucleic Acid Structure, DNA Replication, and Chromosome Structure

Gene Expression at the Molecular Level

Gene Regulation

Mutation, DNA Repair, and Cancer

The Eukaryotic Cell Cycle, Mitosis, and Meiosis

Simple Patterns of Inheritance

Complex Patterns of Inheritance

Genetics of Viruses and Bacteria

Developmental Genetics

Genetic Technology

Genomes, Proteomes, and Bioinformatics

The Origin and History of Life

An Introduction to Evolution

Population Genetics

Origin of Species and Macroevolution

Taxonomy and Systematics

Bacteria and Archaea

Plants and the Conquest of Land

The Evolution and Diversity of Modern Gymnosperms and Angiosperms

Fungi

An Introduction to Animal Diversity

The Invertebrates

The Vertebrates

An Introduction to Flowering Plant Form and Function

Flowering Plants: Behavior

Flowering Plants: Nutrition

Flowering Plants: Transport

Flowering Plants: Reproduction

Introduction to Animal Form and Function

Neuroscience I: Cells of the Nervous System

Neuroscience Ii: Evolution and Function of the Brain and Nervous Systems

Neuroscience Iii: Sensory Systems

The Muscular-Skeletal System and Locomotion

Nutrition, Digestion, and Absorption

Control of Energy Balance, Metabolic Rate, and Body Temperature

Circulatory Systems

Respiratory Systems

Excretory Systems and Salt and Water Balance

Endocrine Systems

Animal Reproduction

Animal Development

Immune Systems

An Introduction to Ecology and Biomes

Behavioral Ecology

Population Ecology

Species Interactions

Community Ecology

Ecosystems Ecology

Biodiversity and Conservation Biology