Question 1

Radiolarians have frothy vacuoles and lipid droplets, which provide them with buoyancy in marine environments.

Accepted Answer

A) True 
 B)False

Question 2

According to the latest research, what statement best describes the first eukaryote?

Accepted Answer

A)  It lacked a nucleus, a mitochondrion, or a chloroplast. 
B)  It lacked a nucleus but contained a mitochondrion and a chloroplast. 
C)  It contained a nucleus and a chloroplast, but not a mitochondrion. 
D)  It contained a nucleus and a mitochondrion, but not a chloroplast. 
E)  It contained a nucleus, a mitochondrion, and a chloroplast. 
A)  It lacked a nucleus, a mitochondrion, or a chloroplast. 
B)  It lacked a nucleus but contained a mitochondrion and a chloroplast. 
C)  It contained a nucleus and a chloroplast, but not a mitochondrion. 
D)  It contained a nucleus and a mitochondrion, but not a chloroplast. 
E)  It contained a nucleus, a mitochondrion, and a chloroplast.

Question 3

Brown algae lack true roots but have similar structures called ____ that anchor them to their substrate.

Accepted Answer

A)  stipes 
B)  blades 
C)  holdfasts 
D)  thalli 
E)  rhizoids 
A)  stipes 
B)  blades 
C)  holdfasts 
D)  thalli 
E)  rhizoids

Question 4

Amoeba is a term used to describe unicellular protists that move by means of flagella .

Accepted Answer

A) True 
 B)False

Question 5

Figure 27.4 
-Answer the question using the accompanying figure. Which stage of the Plasmodium life cycle does Label A represent?

Accepted Answer

A)  sporozoite 
B)  gametocyte 
C)  cyst 
D)  zygote 
E)  merozoite 
A)  sporozoite 
B)  gametocyte 
C)  cyst 
D)  zygote 
E)  merozoite

Question 6

The production of cyclic AMP in Dictyostelium results in ____.

Accepted Answer

A)  sexual reproduction 
B)  cell division 
C)  swimming 
D)  spore production 
E)  aggregation of cells 
A)  sexual reproduction 
B)  cell division 
C)  swimming 
D)  spore production 
E)  aggregation of cells

Question 7

Figure 27.1 
-
Answer the question using the accompanying figure. The function of the structure labeled "2" is ____.

Accepted Answer

A)  food intake 
B)  digestion 
C)  waste elimination 
D)  water discharge 
E)  asexual reproduction 
A)  food intake 
B)  digestion 
C)  waste elimination 
D)  water discharge 
E)  asexual reproduction

Question 8

The single-celled eukaryotes most closely related to animals and fungi are the ciliates .

Accepted Answer

A) True 
 B)False

Question 9

Small, photosynthetic single-celled eukaryotes found in aquatic habitats are collectively called ____.

Accepted Answer

A)  zooplankton 
B)  phytoplankton 
C)  phagoplankton 
D)  bryophytes 
E)  chrysophytes 
A)  zooplankton 
B)  phytoplankton 
C)  phagoplankton 
D)  bryophytes 
E)  chrysophytes

Question 10

Figure 27.2 
-Answer the question using the accompanying figure. What is occurring in step 6?

Accepted Answer

A)  fission 
B)  fusion 
C)  fertilization 
D)  the first meiotic division 
E)  the second meiotic division 
A)  fission 
B)  fusion 
C)  fertilization 
D)  the first meiotic division 
E)  the second meiotic division

Exam 27: Protists

Radiolarians have frothy vacuoles and lipid droplets, which provide them with buoyancy in marine environments.

According to the latest research, what statement best describes the first eukaryote?

Brown algae lack true roots but have similar structures called ____ that anchor them to their substrate.

Amoeba is a term used to describe unicellular protists that move by means of flagella .

Figure 27.4 -Answer the question using the accompanying figure. Which stage of the Plasmodium life cycle does Label A represent?

The production of cyclic AMP in Dictyostelium results in ____.

Figure 27.1 - Answer the question using the accompanying figure. The function of the structure labeled "2" is ____.

The single-celled eukaryotes most closely related to animals and fungi are the ciliates .

Small, photosynthetic single-celled eukaryotes found in aquatic habitats are collectively called ____.

Figure 27.2 -Answer the question using the accompanying figure. What is occurring in step 6?

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Expression: From Dna to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technology: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Digestive Systems and Animal Nutrition

Regulating the Internal Environment: Osmoregulation, Excretion, and Thermoregulation

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

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