Question 1

Some _______ live endosymbiotically with coral and contribute to "coral bleaching"?

Accepted Answer

A)  radiolarians 
B)  stramenopiles 
C)  dinoflagellates 
D)  diatoms 
E)  None of the above 
A)  radiolarians 
B)  stramenopiles 
C)  dinoflagellates 
D)  diatoms 
E)  None of the above

Question 2

The overall size that unicellular microbial eukaryotes can achieve is limited by their

Accepted Answer

A)  energy-producing potential. 
B)  metabolism. 
C)  mitochondria. 
D)  surface area-to-volume ratio. 
E)  Both a and b 
A)  energy-producing potential. 
B)  metabolism. 
C)  mitochondria. 
D)  surface area-to-volume ratio. 
E)  Both a and b

Question 3

Which statement about the brown algae is not true?

Accepted Answer

A)  They are all multicellular. 
B)  They use the same photosynthetic pigments as do land plants. 
C)  They are almost exclusively marine. 
D)  A few are many meters in length. 
E)  They are stramenopiles. 
A)  They are all multicellular. 
B)  They use the same photosynthetic pigments as do land plants. 
C)  They are almost exclusively marine. 
D)  A few are many meters in length. 
E)  They are stramenopiles.

Question 4

Two groups of excavates, the _______ and the _______, lack mitochondria.

Accepted Answer

diplomonad

Question 5

Which of the following statements about protists is false?

Accepted Answer

A)  Protists are photosynthetic and are one of the foundations of the marine food web. 
B)  Protists are synthesizers of materials that form many sandy beaches 
C)  Protists neutralize the sulfuric acid in deep sea vents. 
D)  Protists aid in ruminant herbivore digestion. 
E)  Protists aid in the formation of what we call crude oil. 
A)  Protists are photosynthetic and are one of the foundations of the marine food web. 
B)  Protists are synthesizers of materials that form many sandy beaches 
C)  Protists neutralize the sulfuric acid in deep sea vents. 
D)  Protists aid in ruminant herbivore digestion. 
E)  Protists aid in the formation of what we call crude oil.

Question 6

Contractile vacuoles

Accepted Answer

A)  are important for acquiring food. 
B)  are mechanism for defense against predators. 
C)  are lined with cilia alveoli to maximize surface area. 
D)  are a mechanism for removing excess water from the organism. 
E)  are more important in marine protists than they are in freshwater protists. 
A)  are important for acquiring food. 
B)  are mechanism for defense against predators. 
C)  are lined with cilia alveoli to maximize surface area. 
D)  are a mechanism for removing excess water from the organism. 
E)  are more important in marine protists than they are in freshwater protists.

Question 7

Use the following to answer questions :
Refer to the diagram below.  
-Which letter(s) point(s) to the cyanobacterium outer membrane?

Accepted Answer

The answer of Use the following to answer questions :
Refer...

Question 8

The difference between acellular slime molds and cellular slime molds is that

Accepted Answer

A)  only cellular slime molds are motile. 
B)  they have different numbers of nuclei within the plasma membrane. 
C)  only acellular slime molds ingest food by endocytosis. 
D)  only cellular slime molds ingest food by endocytosis. 
E)  acellular slime molds prefer cool, moist habitats, whereas cellular slime molds prefer dry, hot conditions. 
A)  only cellular slime molds are motile. 
B)  they have different numbers of nuclei within the plasma membrane. 
C)  only acellular slime molds ingest food by endocytosis. 
D)  only cellular slime molds ingest food by endocytosis. 
E)  acellular slime molds prefer cool, moist habitats, whereas cellular slime molds prefer dry, hot conditions.

Question 9

The _______ include the water molds and their terrestrial relatives, such as the downy mildews.

Accepted Answer

A)  parabasalids 
B)  apicomplexans 
C)  red algae 
D)  euglenoids 
E)  oomycetes 
A)  parabasalids 
B)  apicomplexans 
C)  red algae 
D)  euglenoids 
E)  oomycetes

Question 10

Red tides often cause massive fish kills and human illness in those eating shellfish. Which group of protists is responsible for red tides?

Accepted Answer

A)  Parabasalids 
B)  Red algae 
C)  Euglenozoans 
D)  Dinoflagellates 
E)  Radiolarians 
A)  Parabasalids 
B)  Red algae 
C)  Euglenozoans 
D)  Dinoflagellates 
E)  Radiolarians

Question 11

The plasmodial slime molds

Accepted Answer

A)  form a plasmodium that is a coenocyte. 
B)  lack fruiting bodies. 
C)  consist of large numbers of myxamoebas. 
D)  consist at times of a mass called a pseudoplasmodium. 
E)  possess flagella. 
A)  form a plasmodium that is a coenocyte. 
B)  lack fruiting bodies. 
C)  consist of large numbers of myxamoebas. 
D)  consist at times of a mass called a pseudoplasmodium. 
E)  possess flagella.

Question 12

Some excavates

Accepted Answer

A)  lack mitochondria. 
B)  have chloroplasts. 
C)  have genes that are normally present in mitochondrial DNA in their nuclear genome. 
D)  are parasites. 
E)  All of the above 
A)  lack mitochondria. 
B)  have chloroplasts. 
C)  have genes that are normally present in mitochondrial DNA in their nuclear genome. 
D)  are parasites. 
E)  All of the above

Question 13

Which statement about eukaryotic phytoplankton is not true?

Accepted Answer

A)  Some are important primary producers. 
B)  Some contributed to the formation of petroleum. 
C)  Some form toxic "red tides." 
D)  Some are food for marine animals. 
E)  They constitute a clade. 
A)  Some are important primary producers. 
B)  Some contributed to the formation of petroleum. 
C)  Some form toxic "red tides." 
D)  Some are food for marine animals. 
E)  They constitute a clade.

Question 14

Ulothrix

Accepted Answer

A)  features alternation of generations. 
B)  cannot reproduce asexually. 
C)  forms zoospores in two different ways. 
D)  is a multicellular diploid organism. 
E)  does not carry out meiosis. 
A)  features alternation of generations. 
B)  cannot reproduce asexually. 
C)  forms zoospores in two different ways. 
D)  is a multicellular diploid organism. 
E)  does not carry out meiosis.

Question 15

Explain alternation of generations. Why are the protists the first group in which this process could be seen?

Accepted Answer

An organism that exhibits alternation of

Question 16

Explain one line of thought regarding the origin of the eukaryotic cell. Why are scientists unsure of the evolutionary relationships among the protists?

Accepted Answer

One line of thought regarding the origin

Question 17

A eukaryotic organism that undergoes alternation of generations in which different generations do not resemble each other morphologically is referred to as

Accepted Answer

A)  homomorphic. 
B)  heteromorphic. 
C)  isomorphic. 
D)  anisomorphic. 
E)  gametophytic. 
A)  homomorphic. 
B)  heteromorphic. 
C)  isomorphic. 
D)  anisomorphic. 
E)  gametophytic.

Question 18

Which of the following events is not normally associated with the life cycle of a plasmodial slime mold?

Accepted Answer

A)  Development of spores into myxamoebas 
B)  Formation of a sclerotium when conditions are adverse 
C)  Active feeding by the plasmodium as it engulfs food particles 
D)  Meiosis to form sporangiophores 
E)  Fusion of swarm cells to form a diploid zygote 
A)  Development of spores into myxamoebas 
B)  Formation of a sclerotium when conditions are adverse 
C)  Active feeding by the plasmodium as it engulfs food particles 
D)  Meiosis to form sporangiophores 
E)  Fusion of swarm cells to form a diploid zygote

Question 19

Which of the following are not monophyletic?

Accepted Answer

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

Question 20

The microbial eukaryotes that are responsible for sleeping sickness and those that are responsible for malaria

Accepted Answer

A)  are both alveolates. 
B)  both have insect vectors for transmission to humans. 
C)  cause the same symptoms. 
D)  both have gametocyte life stages. 
E)  All of the above 
A)  are both alveolates. 
B)  both have insect vectors for transmission to humans. 
C)  cause the same symptoms. 
D)  both have gametocyte life stages. 
E)  All of the above

Exam 27: The Origin and Diversification of Eukaryotes

Some _______ live endosymbiotically with coral and contribute to "coral bleaching"?

The overall size that unicellular microbial eukaryotes can achieve is limited by their

Which statement about the brown algae is not true?

Two groups of excavates, the _______ and the _______, lack mitochondria.

Which of the following statements about protists is false?

Contractile vacuoles

Use the following to answer questions : Refer to the diagram below. -Which letter(s) point(s) to the cyanobacterium outer membrane?

The difference between acellular slime molds and cellular slime molds is that

The _______ include the water molds and their terrestrial relatives, such as the downy mildews.

Red tides often cause massive fish kills and human illness in those eating shellfish. Which group of protists is responsible for red tides?

The plasmodial slime molds

Some excavates

Which statement about eukaryotic phytoplankton is not true?

Ulothrix

Explain alternation of generations. Why are the protists the first group in which this process could be seen?

Explain one line of thought regarding the origin of the eukaryotic cell. Why are scientists unsure of the evolutionary relationships among the protists?

A eukaryotic organism that undergoes alternation of generations in which different generations do not resemble each other morphologically is referred to as

Which of the following events is not normally associated with the life cycle of a plasmodial slime mold?

Which of the following are not monophyletic?

The microbial eukaryotes that are responsible for sleeping sickness and those that are responsible for malaria

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

Two groups of excavates, the _ and the _, lack mitochondria.