Question 1

Methanogens are classified as ____.

Accepted Answer

A)  Crenarchaeota only 
B)  Euryarchaeota only 
C)  Korarchaeota 
D)  Nanoarchaeota 
E)  both Crenarchaeota and Euryarchaeota 
A)  Crenarchaeota only 
B)  Euryarchaeota only 
C)  Korarchaeota 
D)  Nanoarchaeota 
E)  both Crenarchaeota and Euryarchaeota

Question 2

Archaea that have been cultured in the laboratory include ____.

Accepted Answer

A)  Crenarchaeota and Euryarchaeota 
B)  Crenarchaeota and Korarchaeota 
C)  Euryarchaeota and Korarchaeota 
D)  Euryarchaeota and Nanorarchaeota 
E)  Nanoarchaeota and Korarchaeota 
A)  Crenarchaeota and Euryarchaeota 
B)  Crenarchaeota and Korarchaeota 
C)  Euryarchaeota and Korarchaeota 
D)  Euryarchaeota and Nanorarchaeota 
E)  Nanoarchaeota and Korarchaeota

Question 3

A Gram-positive bacterium is characterized by the ____.

Accepted Answer

A)  presence of a thin peptidoglycan cell wall 
B)  presence of a thick peptidoglycan cell wall 
C)  absence of a cell wall 
D)  presence of an outer membrane 
E)  absence of ribosomes 
A)  presence of a thin peptidoglycan cell wall 
B)  presence of a thick peptidoglycan cell wall 
C)  absence of a cell wall 
D)  presence of an outer membrane 
E)  absence of ribosomes

Question 4

Figure 26.2
-Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies a phylum?

Accepted Answer

A)  C 
B)  D 
C)  E 
D)  D and E 
E)  C, D, and E 
A)  C 
B)  D 
C)  E 
D)  D and E 
E)  C, D, and E

Question 5

The ____ contain Gram-positive and Gram-negative species.

Accepted Answer

A)  Archaea 
B)  Bacteria 
C)  Archaea and Bacteria 
D)  extremophiles 
E)  methanogens 
A)  Archaea 
B)  Bacteria 
C)  Archaea and Bacteria 
D)  extremophiles 
E)  methanogens

Question 6

Figure 26.2
-Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 7

The ____ use solar energy and organic molecules as their nutritional sources.

Accepted Answer

A)  chemoautotrophs 
B)  chemoheterotrophs 
C)  photoautotrophs 
D)  photoheterotrophs 
E)  Archaea 
A)  chemoautotrophs 
B)  chemoheterotrophs 
C)  photoautotrophs 
D)  photoheterotrophs 
E)  Archaea

Question 8

DNA in prokaryotes is found in ____.

Accepted Answer

A)  the nucleoid only 
B)  the nucleolus only 
C)  plasmids only 
D)  the nucleoid and plasmids 
E)  the nucleolus and plasmids 
A)  the nucleoid only 
B)  the nucleolus only 
C)  plasmids only 
D)  the nucleoid and plasmids 
E)  the nucleolus and plasmids

Question 9

Cyanobacteria are ____.

Accepted Answer

A)  chemoautotrophs only 
B)  chemoheterotrophs 
C)  photoautotrophs 
D)  photoheterotrophs only 
E)  chemoautotrophs and photoheterotrophs 
A)  chemoautotrophs only 
B)  chemoheterotrophs 
C)  photoautotrophs 
D)  photoheterotrophs only 
E)  chemoautotrophs and photoheterotrophs

Question 10

Match between columns
                        Premises: Lactobacillus
Azotobacter
Bacillus
Legionella
Salmonella
Treponema
Mycoplasma
Methanosarcina
Halobacterium
Streptococcus
Chlamydia
Helicobacter
Neisseria
Cyanobacteria
Pyrolobus

Accepted Answer

The Answer of thrives in very high temperatures and fixes is...

Question 11

Why is nitrogen fixation by prokaryotes essential to life on Earth?

Accepted Answer

A)  It removes nitrogen from the soil. 
B)  It converts atmospheric nitrogen to a non-toxic form. 
C)  It provides nitrogen sources for plants and animals. 
D)  It provides an energy source for photosynthesis. 
E)  It allows for the breakdown of complex macromolecules. 
A)  It removes nitrogen from the soil. 
B)  It converts atmospheric nitrogen to a non-toxic form. 
C)  It provides nitrogen sources for plants and animals. 
D)  It provides an energy source for photosynthesis. 
E)  It allows for the breakdown of complex macromolecules.

Question 12

Plaque is _____ caused by _____.

Accepted Answer

A)  an infectious disease; bacterial biofilms 
B)  a non-infectious disease; inflammation of the gums 
C)  an infectious disease; non-pathogenic bacteria 
D)  a non-infectious disease; E. coli 
E)  an infectious disease; E. coli 
A)  an infectious disease; bacterial biofilms 
B)  a non-infectious disease; inflammation of the gums 
C)  an infectious disease; non-pathogenic bacteria 
D)  a non-infectious disease; E. coli 
E)  an infectious disease; E. coli

Question 13

The evolutionary ancestors of mitochondria are believed to have been ancient ____.

Accepted Answer

A)  Archaea 
B)  cyanobacteria 
C)  proteobacteria 
D)  green bacteria 
E)  Gram-positive bacteria 
A)  Archaea 
B)  cyanobacteria 
C)  proteobacteria 
D)  green bacteria 
E)  Gram-positive bacteria

Question 14

There are ____ major evolutionary groups in the domain Bacteria.

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
E)  at least 6 
A)  2 
B)  3 
C)  4 
D)  5 
E)  at least 6

Question 15

Quorum sensing is used by bacteria to facilitate the formation of endospores .

Accepted Answer

A) True 
 B)False

Question 16

In biological nitrogen-fixation, ____.

Accepted Answer

A)  ammonia is converted to nitrogen gas 
B)  nitrogen gas is converted to ammonia 
C)  ammonia is converted to nitrate 
D)  amino acids are linked into proteins in ribosomes 
E)  nitrate is converted to ammonia 
A)  ammonia is converted to nitrogen gas 
B)  nitrogen gas is converted to ammonia 
C)  ammonia is converted to nitrate 
D)  amino acids are linked into proteins in ribosomes 
E)  nitrate is converted to ammonia

Question 17

Microbes that are found in hot springs or other extreme environments are most likely to be ____.

Accepted Answer

A)  Gram-negative 
B)  Gram-positive 
C)  archaeans 
D)  cyanobacteria 
E)  proteobacteria 
A)  Gram-negative 
B)  Gram-positive 
C)  archaeans 
D)  cyanobacteria 
E)  proteobacteria

Question 18

A(n) ____ would likely kill Methanococcus species.

Accepted Answer

A)  anoxic environment 
B)  swamp 
C)  intestine of a cow 
D)  anaerobic environment 
E)  aerobic environment 
A)  anoxic environment 
B)  swamp 
C)  intestine of a cow 
D)  anaerobic environment 
E)  aerobic environment

Question 19

A lichen is sometimes a symbiotic association between a proteobacterium and a fungus.

Accepted Answer

A) True 
 B)False

Question 20

Which symptom indicates the presence of plaque in a dental patient?

Accepted Answer

A)  Presence of E. coli in the patient's mouth. 
B)  A bacterial culture from a patient's mouth that appears pink after Gram staining. 
C)  Presence of cyanobacteria in the patient's mouth. 
D)  A bacterial culture from the patient's mouth that appears purple after Gram staining. 
E)  Non-pathogenic biofilms in the patient's mouth. 
A)  Presence of E. coli in the patient's mouth. 
B)  A bacterial culture from a patient's mouth that appears pink after Gram staining. 
C)  Presence of cyanobacteria in the patient's mouth. 
D)  A bacterial culture from the patient's mouth that appears purple after Gram staining. 
E)  Non-pathogenic biofilms in the patient's mouth.

Exam 26: Prokaryotes and Viruses

Methanogens are classified as ____.

Archaea that have been cultured in the laboratory include ____.

A Gram-positive bacterium is characterized by the ____.

Figure 26.2 -Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies a phylum?

The ____ contain Gram-positive and Gram-negative species.

Figure 26.2 -Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Eukarya?

The ____ use solar energy and organic molecules as their nutritional sources.

DNA in prokaryotes is found in ____.

Cyanobacteria are ____.

Why is nitrogen fixation by prokaryotes essential to life on Earth?

Plaque is _____ caused by _____.

The evolutionary ancestors of mitochondria are believed to have been ancient ____.

There are ____ major evolutionary groups in the domain Bacteria.

Quorum sensing is used by bacteria to facilitate the formation of endospores .

In biological nitrogen-fixation, ____.

Microbes that are found in hot springs or other extreme environments are most likely to be ____.

A(n) ____ would likely kill Methanococcus species.

A lichen is sometimes a symbiotic association between a proteobacterium and a fungus.

Which symptom indicates the presence of plaque in a dental patient?

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

Protists

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

Filters

Plaque is _ caused by _.