Question 1

The first true eukaryote had

Accepted Answer

A)  mitochondria. 
B)  a cytoskeleton. 
C)  a nucleus. 
D)  a cell wall. 
E)  Both b and c 
A)  mitochondria. 
B)  a cytoskeleton. 
C)  a nucleus. 
D)  a cell wall. 
E)  Both b and c

Question 2

Which of the following groups includes the dinoflagellates?

Accepted Answer

A)  Alveolates 
B)  Green algae 
C)  Red algae 
D)  Stramenopiles 
E)  Euglenozoans 
A)  Alveolates 
B)  Green algae 
C)  Red algae 
D)  Stramenopiles 
E)  Euglenozoans

Question 3

Use the following to answer questions:
Refer to the diagram below, showing alternation of generations.  
-Which is the sporophyte generation, A or B?

Accepted Answer

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

Question 4

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,...

Question 5

Many protists are significant human pathogens. Describe the pathogenic protist that causes malaria, describe its life cycle, and identify the microbial eukaryote group to which it belongs.

Accepted Answer

You may select from a variety of pathoge

Question 6

Which of the following statements about the process of conjugation is false?

Accepted Answer

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

Question 7

Organisms that exhibit isogamy have

Accepted Answer

A)  similar male and female gametes. 
B)  female gametes that are significantly larger than male gametes. 
C)  male gametes that are significantly larger than female gametes. 
D)  a diplontic mode of reproduction. 
E)  a primarily asexual mode of reproduction. 
A)  similar male and female gametes. 
B)  female gametes that are significantly larger than male gametes. 
C)  male gametes that are significantly larger than female gametes. 
D)  a diplontic mode of reproduction. 
E)  a primarily asexual mode of reproduction.

Question 8

Apicomplexans

Accepted Answer

A)  possess flagella. 
B)  possess a glassy shell. 
C)  are all parasitic. 
D)  are algae. 
E)  include the trypanosomes that cause sleeping sickness. 
A)  possess flagella. 
B)  possess a glassy shell. 
C)  are all parasitic. 
D)  are algae. 
E)  include the trypanosomes that cause sleeping sickness.

Question 9

Using the figure below and your knowledge of the slime mold Dictyostelium, what might you think is the signal to change from a feeding slug to the other stages?

Accepted Answer

A)  Time-the organism passes through each stage of its life cycle on a regular schedule. 
B)  Predators in the environment 
C)  Lack of nutrients in the environment 
D)  Temperature changes 
E)  All of the above 
A)  Time-the organism passes through each stage of its life cycle on a regular schedule. 
B)  Predators in the environment 
C)  Lack of nutrients in the environment 
D)  Temperature changes 
E)  All of the above

Question 10

A major difference between the vegetative states of cellular and plasmodial slime molds is that plasmodial slime molds _______ and cellular slime molds _______.

Accepted Answer

A)  have haploid nuclei; have diploid nuclei 
B)  produce fruiting bodies; do not produce fruiting bodies 
C)  undergo aggregation when conditions become adverse; do not undergo aggregation under adverse conditions 
D)  exist as a coenocytic mass; exist as individual myxamoebas 
E)  grow almost indefinitely in favorable conditions; must aggregate into myxamoebas every seven generations 
A)  have haploid nuclei; have diploid nuclei 
B)  produce fruiting bodies; do not produce fruiting bodies 
C)  undergo aggregation when conditions become adverse; do not undergo aggregation under adverse conditions 
D)  exist as a coenocytic mass; exist as individual myxamoebas 
E)  grow almost indefinitely in favorable conditions; must aggregate into myxamoebas every seven generations

Question 11

_______ did not help to provide evidence that chloroplasts arose from the engulfment of a cyanobacterium by a eukaryotic cell.

Accepted Answer

A)  Electron microscopy 
B)  Nucleic acid sequencing 
C)  Presence of cyanobacterial photosynthetic pigments in green plants 
D)  Presence of peptidoglycan in glaucophytes 
E)  Presence of cyanobacterial pigments in red algae 
A)  Electron microscopy 
B)  Nucleic acid sequencing 
C)  Presence of cyanobacterial photosynthetic pigments in green plants 
D)  Presence of peptidoglycan in glaucophytes 
E)  Presence of cyanobacterial pigments in red algae

Question 12

Perhaps the best-known _______ are the malarial parasites of the genus Plasmodium.

Accepted Answer

A)  turbellarians 
B)  mastigophorans 
C)  dinoflagellates 
D)  apicomplexans 
E)  poriferans 
A)  turbellarians 
B)  mastigophorans 
C)  dinoflagellates 
D)  apicomplexans 
E)  poriferans

Question 13

The lineage leading to the charales also leads to _______.

Accepted Answer

The answer of The lineage leading to the charales also...

Question 14

The _______ are a group of protists that harbor photosynthetic endosymbionts that make them look greenish or golden in color.

Accepted Answer

A)  dinoflagellates 
B)  plasmodial slime molds 
C)  radiolarians 
D)  diatoms 
E)  corals 
A)  dinoflagellates 
B)  plasmodial slime molds 
C)  radiolarians 
D)  diatoms 
E)  corals

Question 15

The _______ include the only microbial eukaryotes that contain the full complement of photosynthetic pigments characteristic of plants.

Accepted Answer

A)  choanoflagellates 
B)  parabasalids 
C)  cilians 
D)  red algae 
E)  chlorophytes 
A)  choanoflagellates 
B)  parabasalids 
C)  cilians 
D)  red algae 
E)  chlorophytes

Question 16

Paramecia contain two types of nuclei: a large macronucleus and as many as 80 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 many copies of the genetic information. 
D)  contains DNA that is not transcribed. 
E)  contains DNA that is transcribed but not translated. 
A)  is important in sexual recombination (conjugation). 
B)  contains several micronuclei. 
C)  contains many copies of the genetic information. 
D)  contains DNA that is not transcribed. 
E)  contains DNA that is transcribed but not translated.

Question 17

The color of red algae is due to the presence of the photosynthetic pigment _______.

Accepted Answer

The answer of The color of red algae is due...

Question 18

When organic material is digested in a food vacuole, the pH in the vacuole

Accepted Answer

A)  decreases to aid in digestion, and then increases as digestion is completed. 
B)  increases to aid in digestion, and then decreases as digestion is completed. 
C)  stays the same during and after digestion. 
D)  stays the same during digestion, and then increases as digestion is completed. 
E)  None of the above 
A)  decreases to aid in digestion, and then increases as digestion is completed. 
B)  increases to aid in digestion, and then decreases as digestion is completed. 
C)  stays the same during and after digestion. 
D)  stays the same during digestion, and then increases as digestion is completed. 
E)  None of the above

Question 19

Many _______ deposit silicon in their cell walls.

Accepted Answer

The answer of Many _______ deposit silicon in their cell...

Question 20

Microbial eukaryotes

Accepted Answer

A)  constitute a clade. 
B)  are all microscopic. 
C)  may carry out photosynthesis. 
D)  are all heterotrophs. 
E)  are all unicellular. 
A)  constitute a clade. 
B)  are all microscopic. 
C)  may carry out photosynthesis. 
D)  are all heterotrophs. 
E)  are all unicellular.

Exam 27: The Origin and Diversification of Eukaryotes

The first true eukaryote had

Which of the following groups includes the dinoflagellates?

Use the following to answer questions: Refer to the diagram below, showing alternation of generations. -Which is the sporophyte generation, A or B?

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

Many protists are significant human pathogens. Describe the pathogenic protist that causes malaria, describe its life cycle, and identify the microbial eukaryote group to which it belongs.

Which of the following statements about the process of conjugation is false?

Organisms that exhibit isogamy have

Apicomplexans

Using the figure below and your knowledge of the slime mold Dictyostelium, what might you think is the signal to change from a feeding slug to the other stages?

A major difference between the vegetative states of cellular and plasmodial slime molds is that plasmodial slime molds _______ and cellular slime molds _______.

_______ did not help to provide evidence that chloroplasts arose from the engulfment of a cyanobacterium by a eukaryotic cell.

Perhaps the best-known _______ are the malarial parasites of the genus Plasmodium.

The lineage leading to the charales also leads to _______.

The _______ are a group of protists that harbor photosynthetic endosymbionts that make them look greenish or golden in color.

The _______ include the only microbial eukaryotes that contain the full complement of photosynthetic pigments characteristic of plants.

Paramecia contain two types of nuclei: a large macronucleus and as many as 80 micronuclei. The micronuclei are typical eukaryotic nuclei, essential for genetic recombination. The macronucleus

The color of red algae is due to the presence of the photosynthetic pigment _______.

When organic material is digested in a food vacuole, the pH in the vacuole

Many _______ deposit silicon in their cell walls.

Microbial eukaryotes

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

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Species and Their Formation

Evolution of Genes and Genomes

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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

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The Plant Body

Transport in Plants

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The Mammalian Nervous System: Structure and Higher Function

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Gas Exchange in Animals

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A major difference between the vegetative states of cellular and plasmodial slime molds is that plasmodial slime molds _ and cellular slime molds _.