Question 1

Which pair is most closely related?

Accepted Answer

A)  Brown algae and diatoms 
B)  Dinoflagellates and euglenids 
C)  Oomycetes and plasmodial slime molds 
D)  Cercozoans and parabasalids 
E)  Apicomplexans and kinetoplastids 
A)  Brown algae and diatoms 
B)  Dinoflagellates and euglenids 
C)  Oomycetes and plasmodial slime molds 
D)  Cercozoans and parabasalids 
E)  Apicomplexans and kinetoplastids

Question 2

The condition of different organisms living together,one inside the other,is called _______.

Accepted Answer

The answer of The condition of different organisms living together,one...

Question 3

You are looking at a plankton sample and find a single-celled organism with a glassy internal skeleton that gives it an elaborate geometric shape.It has a greenish golden color derived from photosynthetic endosymbionts within the organism.This organism is most likely a

Accepted Answer

A)  dinoflagellate. 
B)  plasmodial slime mold. 
C)  radiolarian. 
D)  diatom. 
E)  coral. 
A)  dinoflagellate. 
B)  plasmodial slime mold. 
C)  radiolarian. 
D)  diatom. 
E)  coral.

Question 4

A prokaryotic cell with a firm cell wall is limited in terms of how large it can get,while eukaryotic cell with a flexible cell membrane is able to grow much larger.What is the significance of this flexible cell membrane in eukaryotes?

Accepted Answer

A)  It means there are no surface area-to-volume constraints on a eukaryotic cell. 
B)  It allows for infolding,which increases surface area of eukaryotes. 
C)  It allows for eukaryotic cells to be larger to contain their mitochondria. 
D)  Eukaryotes have a cytoskeleton,which allows for a smaller surface area-to-volume ratio. 
E)  It allows eukaryotic cells to grow larger to accommodate food vacuoles. 
A)  It means there are no surface area-to-volume constraints on a eukaryotic cell. 
B)  It allows for infolding,which increases surface area of eukaryotes. 
C)  It allows for eukaryotic cells to be larger to contain their mitochondria. 
D)  Eukaryotes have a cytoskeleton,which allows for a smaller surface area-to-volume ratio. 
E)  It allows eukaryotic cells to grow larger to accommodate food vacuoles.

Question 5

Which group exhibits exclusively radial symmetry?

Accepted Answer

A)  Loboseans 
B)  Foraminiferans 
C)  Stramenophiles 
D)  Radiolarians 
E)  Heteroloboseans 
A)  Loboseans 
B)  Foraminiferans 
C)  Stramenophiles 
D)  Radiolarians 
E)  Heteroloboseans

Question 6

Which clade of eukaryotes includes groups that do not have mitochondria?

Accepted Answer

A)  Alveolates 
B)  Plantae 
C)  Excavates 
D)  Rhizaria 
E)  Stramenophiles 
A)  Alveolates 
B)  Plantae 
C)  Excavates 
D)  Rhizaria 
E)  Stramenophiles

Question 7

The plasmodial slime molds

Accepted Answer

A)  form a plasmodium that is a coenocyte. 
B)  lack fruiting structures. 
C)  consist of large numbers of myxamoebas. 
D)  consist at times of a mass called a pseudoplasmodium. 
E)  cannot move from one location to another,as cellular slime molds can. 
A)  form a plasmodium that is a coenocyte. 
B)  lack fruiting structures. 
C)  consist of large numbers of myxamoebas. 
D)  consist at times of a mass called a pseudoplasmodium. 
E)  cannot move from one location to another,as cellular slime molds can.

Question 8

Which protist group includes large multinucleate terrestrial heterotrophs that are visible to the naked eye and can be several yards in diameter?

Accepted Answer

A)  Ciliates 
B)  Euglenids 
C)  Brown algae 
D)  Foraminiferans 
E)  Plasmodial slime molds 
A)  Ciliates 
B)  Euglenids 
C)  Brown algae 
D)  Foraminiferans 
E)  Plasmodial slime molds

Question 9

Which group,if eliminated,would decrease global oxygen levels the most?

Accepted Answer

A)  Radiolarians 
B)  Diplomonads 
C)  Dinoflagellates 
D)  Diatoms 
E)  Apicomplexans 
A)  Radiolarians 
B)  Diplomonads 
C)  Dinoflagellates 
D)  Diatoms 
E)  Apicomplexans

Question 10

Two different species of ciliate are placed in a solution with an unknown solute concentration.Ciliate A has a contractile vacuole that expels water at a rate of 5 times per minute;the contractile vacuole of ciliate B expels water 12 times per minute.What is a reasonable conclusion based on these observations?

Accepted Answer

A)  Ciliate A has a greater solute concentration than ciliate B. 
B)  Ciliate B has a greater solute concentration than ciliate A. 
C)  The solution has a greater solute concentration than ciliate A. 
D)  The solution has a greater solute concentration than ciliate B. 
E)  No conclusions can be made unless we know the solute concentration of the solution. 
A)  Ciliate A has a greater solute concentration than ciliate B. 
B)  Ciliate B has a greater solute concentration than ciliate A. 
C)  The solution has a greater solute concentration than ciliate A. 
D)  The solution has a greater solute concentration than ciliate B. 
E)  No conclusions can be made unless we know the solute concentration of the solution.

Question 11

Which statement about the process of conjugation in paramecia is false?

Accepted Answer

A)  Macronuclei in the resulting paramecia are genetically different from the macronuclei in the original paramecia. 
B)  The two resulting paramecia are genetically distinct from each other. 
C)  Within each paramecium,the original macronucleus is destroyed. 
D)  The two resulting paramecia have a combination of alleles. 
E)  The micronuclei that are exchanged are genetically different from each other. 
A)  Macronuclei in the resulting paramecia are genetically different from the macronuclei in the original paramecia. 
B)  The two resulting paramecia are genetically distinct from each other. 
C)  Within each paramecium,the original macronucleus is destroyed. 
D)  The two resulting paramecia have a combination of alleles. 
E)  The micronuclei that are exchanged are genetically different from each other.

Question 12

Paramecia contain two types of nuclei: a large macronucleus and usually several micronuclei.The micronuclei are typical eukaryotic nuclei,essential for genetic recombination.The macronucleus

Accepted Answer

A)  is important in sexual recombination (conjugation). 
B)  contains several micronuclei. 
C)  contains DNA that is not transcribed. 
D)  contains many copies of the genetic information. 
E)  contains DNA that is transcribed but not translated. 
A)  is important in sexual recombination (conjugation). 
B)  contains several micronuclei. 
C)  contains DNA that is not transcribed. 
D)  contains many copies of the genetic information. 
E)  contains DNA that is transcribed but not translated.

Question 13

Which characteristic represents a synapomorphy (shared derived trait)of the alveolates?

Accepted Answer

A)  The presence of peptidoglycan between membranes of an important organelle 
B)  Rows of tubular hairs on the longer of two unequally sized flagella 
C)  Air sacs below the cell membrane 
D)  A fully parasitic lifestyle 
E)  External shells of calcium carbonate 
A)  The presence of peptidoglycan between membranes of an important organelle 
B)  Rows of tubular hairs on the longer of two unequally sized flagella 
C)  Air sacs below the cell membrane 
D)  A fully parasitic lifestyle 
E)  External shells of calcium carbonate

Question 14

Which organism is not a member of the phytoplankton?

Accepted Answer

A)  Diatom 
B)  Cyanobacteria 
C)  Green algae 
D)  Kinetoplastid 
E)  Dinoflagellate 
A)  Diatom 
B)  Cyanobacteria 
C)  Green algae 
D)  Kinetoplastid 
E)  Dinoflagellate

Question 15

Which reproductive process occurs among the protists (microbial eukaryotes)?

Accepted Answer

A)  Binary fission 
B)  Multiple fission 
C)  Budding and spore formation 
D)  Union of gametes 
E)  All of the above 
A)  Binary fission 
B)  Multiple fission 
C)  Budding and spore formation 
D)  Union of gametes 
E)  All of the above

Question 16

Which statement about the process of conjugation is false?

Accepted Answer

A)  It is a reproductive process. 
B)  Meiosis takes place. 
C)  Micronuclei disintegrate. 
D)  Mitosis takes place. 
E)  It is a sexual process of genetic recombination. 
A)  It is a reproductive process. 
B)  Meiosis takes place. 
C)  Micronuclei disintegrate. 
D)  Mitosis takes place. 
E)  It is a sexual process of genetic recombination.

Question 17

You are examining a saltwater sample and see a single-celled organism with a cell wall constructed of two pieces,with the top piece overlapping the bottom piece.The cell wall is impregnated with silica and has an intricate pattern.It is most likely that you are looking at a

Accepted Answer

A)  red alga. 
B)  radiolarian. 
C)  diatom. 
D)  euglenid. 
E)  dinoflagellate. 
A)  red alga. 
B)  radiolarian. 
C)  diatom. 
D)  euglenid. 
E)  dinoflagellate.

Question 18

The _______ are marine microbial eukaryotes that secrete a glassy endoskeleton.

Accepted Answer

A)  algae 
B)  protozoa 
C)  radiolarians 
D)  flagellates 
E)  dinoflagellates 
A)  algae 
B)  protozoa 
C)  radiolarians 
D)  flagellates 
E)  dinoflagellates

Question 19

The _______,members of the phytoplankton,are major photosynthetic producers in coastal waters.

Accepted Answer

A)  radiolarians 
B)  amoebozoans 
C)  choanoflagellates 
D)  diatoms 
E)  ciliates 
A)  radiolarians 
B)  amoebozoans 
C)  choanoflagellates 
D)  diatoms 
E)  ciliates

Question 20

Which of the following are not monophyletic?

Accepted Answer

A)  Diplomonads 
B)  Microbial eukaryotes 
C)  Animals 
D)  Red algae 
E)  Plants 
A)  Diplomonads 
B)  Microbial eukaryotes 
C)  Animals 
D)  Red algae 
E)  Plants

Exam 20: The Origin and Diversification of Eukaryotes

Which pair is most closely related?

The condition of different organisms living together,one inside the other,is called _______.

You are looking at a plankton sample and find a single-celled organism with a glassy internal skeleton that gives it an elaborate geometric shape.It has a greenish golden color derived from photosynthetic endosymbionts within the organism.This organism is most likely a

A prokaryotic cell with a firm cell wall is limited in terms of how large it can get,while eukaryotic cell with a flexible cell membrane is able to grow much larger.What is the significance of this flexible cell membrane in eukaryotes?

Which group exhibits exclusively radial symmetry?

Which clade of eukaryotes includes groups that do not have mitochondria?

The plasmodial slime molds

Which protist group includes large multinucleate terrestrial heterotrophs that are visible to the naked eye and can be several yards in diameter?

Which group,if eliminated,would decrease global oxygen levels the most?

Which statement about the process of conjugation in paramecia is false?

Paramecia contain two types of nuclei: a large macronucleus and usually several micronuclei.The micronuclei are typical eukaryotic nuclei,essential for genetic recombination.The macronucleus

Which characteristic represents a synapomorphy (shared derived trait)of the alveolates?

Which organism is not a member of the phytoplankton?

Which reproductive process occurs among the protists (microbial eukaryotes)?

Which statement about the process of conjugation is false?

You are examining a saltwater sample and see a single-celled organism with a cell wall constructed of two pieces,with the top piece overlapping the bottom piece.The cell wall is impregnated with silica and has an intricate pattern.It is most likely that you are looking at a

The _______ are marine microbial eukaryotes that secrete a glassy endoskeleton.

The _______,members of the phytoplankton,are major photosynthetic producers in coastal waters.

Which of the following are not monophyletic?

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

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