Question 1

Phylogenetic analysis indicates that there are at least ______ major lineages of Bacteria.

Accepted Answer

A)  4 
B)  5 
C)  8 
D)  17 
E)  20 
A)  4 
B)  5 
C)  8 
D)  17 
E)  20

Question 2

Which of the following statements concerning nanotubes is FALSE?

Accepted Answer

A)  They have a plasma membrane. 
B)  They are composed of cell wall material. 
C)  They contain cytoplasm. 
D)  They provide a network for the exchange of molecules. 
E)  They are indistinguishable from pili. 
A)  They have a plasma membrane. 
B)  They are composed of cell wall material. 
C)  They contain cytoplasm. 
D)  They provide a network for the exchange of molecules. 
E)  They are indistinguishable from pili.

Question 3

The great majority of plant viruses have a genome composed of single-stranded RNA.

Accepted Answer

A) True 
 B)False

Question 4

Structures called _______ connect two cells and draw them together for DNA transfer.

Accepted Answer

A)  pili 
B)  flagellin 
C)  flagella 
D)  fimbriae 
E)  nanotubes 
A)  pili 
B)  flagellin 
C)  flagella 
D)  fimbriae 
E)  nanotubes

Question 5

Which of the following statements about the environmental ranges of cyanobacteria is FALSE?

Accepted Answer

A)  Most species are symbiotic. 
B)  Some species grow in hot springs. 
C)  Some species grow in Antarctic lakes. 
D)  Some species grow in acidic waters. 
E)  Some species grow in the fur of polar bears. 
A)  Most species are symbiotic. 
B)  Some species grow in hot springs. 
C)  Some species grow in Antarctic lakes. 
D)  Some species grow in acidic waters. 
E)  Some species grow in the fur of polar bears.

Question 6

In the process of nitrogen fixation:

Accepted Answer

A)  Photosystem II occurs but not Photosystem I. 
B)  cyclic photophosphorylation does not occur. 
C)  oxygen is produced as a waste product. 
D)  nitrogen gas is converted to amino acids. 
E)  nitrogen gas is converted to ammonium. 
A)  Photosystem II occurs but not Photosystem I. 
B)  cyclic photophosphorylation does not occur. 
C)  oxygen is produced as a waste product. 
D)  nitrogen gas is converted to amino acids. 
E)  nitrogen gas is converted to ammonium.

Question 7

A coccus has a ______ shape.

Accepted Answer

A)  spherical 
B)  spiral 
C)  cylindrical 
D)  curved 
E)  triangular 
A)  spherical 
B)  spiral 
C)  cylindrical 
D)  curved 
E)  triangular

Question 8

Which of the following statements about viruses is FALSE?

Accepted Answer

A)  Practically every kind of organism can be infected by a virus. 
B)  The simplest viruses consist of a nucleic acid surrounded by a capsid. 
C)  Some viruses have an RNA genome. 
D)  Outside its host cell, a virion has a slow metabolism. 
E)  Some viruses contain double-stranded DNA. 
A)  Practically every kind of organism can be infected by a virus. 
B)  The simplest viruses consist of a nucleic acid surrounded by a capsid. 
C)  Some viruses have an RNA genome. 
D)  Outside its host cell, a virion has a slow metabolism. 
E)  Some viruses contain double-stranded DNA.

Question 9

Mycoplasmas have cell walls containing peptidoglycan.

Accepted Answer

A) True 
 B)False

Question 10

One method by which prokaryotes reproduce asexually is binary fission.

Accepted Answer

A) True 
 B)False

Question 11

Many species of Archaea are pathogenic to plants.

Accepted Answer

A) True 
 B)False

Question 12

A viral disease of plants in which the symptoms are small, light-colored flecks intermingled with the normal green of leaves and fruit is called:

Accepted Answer

A)  ring spot. 
B)  yellows. 
C)  canker. 
D)  leaf roll. 
E)  mosaic. 
A)  ring spot. 
B)  yellows. 
C)  canker. 
D)  leaf roll. 
E)  mosaic.

Question 13

Which of the following is the uptake of DNA by a prokaryotic cell from its environment?

Accepted Answer

A)  binary fission 
B)  transduction 
C)  transformation 
D)  conjugation 
E)  budding 
A)  binary fission 
B)  transduction 
C)  transformation 
D)  conjugation 
E)  budding

Question 14

In flowering plants, phytoplasmas are generally confined to the xylem.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following statements about prokaryotic endospores is FALSE?

Accepted Answer

A)  They are dormant, resting cells. 
B)  They form when a population of cells begins to exhaust its food supply. 
C)  They greatly increase the survival capacity of the cell. 
D)  They are resistant to heat but not to desiccation. 
E)  They can remain viable for long periods. 
A)  They are dormant, resting cells. 
B)  They form when a population of cells begins to exhaust its food supply. 
C)  They greatly increase the survival capacity of the cell. 
D)  They are resistant to heat but not to desiccation. 
E)  They can remain viable for long periods.

Question 16

A viral capsid is a:

Accepted Answer

A)  protein coat. 
B)  strand of DNA. 
C)  strand of RNA. 
D)  plasma membrane. 
E)  type of organelle. 
A)  protein coat. 
B)  strand of DNA. 
C)  strand of RNA. 
D)  plasma membrane. 
E)  type of organelle.

Question 17

Which of the following statements concerning the hypersensitive response is FALSE?

Accepted Answer

A)  It is a response to infection by different types of pathogens. 
B)  It is usually mediated by recessive genes. 
C)  It includes host cell death at the infection site. 
D)  It includes the accumulation of antimicrobial molecules. 
E)  It inhibits pathogen movement at the edge of the lesion. 
A)  It is a response to infection by different types of pathogens. 
B)  It is usually mediated by recessive genes. 
C)  It includes host cell death at the infection site. 
D)  It includes the accumulation of antimicrobial molecules. 
E)  It inhibits pathogen movement at the edge of the lesion.

Question 18

Which of the following statements does NOT describe the plasma membrane of prokaryotes?

Accepted Answer

A)  Like eukaryotic plasma membranes, it is a lipid bilayer. 
B)  Like eukaryotic plasma membranes, it contains proteins and sterols. 
C)  In aerobic species, it is the site of the electron transport chain. 
D)  In some photosynthetic species it is the site of photosynthesis. 
E)  It has attachment sites for daughter chromosomes during cell division. 
A)  Like eukaryotic plasma membranes, it is a lipid bilayer. 
B)  Like eukaryotic plasma membranes, it contains proteins and sterols. 
C)  In aerobic species, it is the site of the electron transport chain. 
D)  In some photosynthetic species it is the site of photosynthesis. 
E)  It has attachment sites for daughter chromosomes during cell division.

Question 19

Transduction is a type of lateral gene transfer.

Accepted Answer

A) True 
 B)False

Question 20

Which group of photosynthetic prokaryotes has bacteriochlorophyll and only one photosystem?

Accepted Answer

A)  mycoplasmas 
B)  purple and green bacteria 
C)  spiroplasmas 
D)  cyanobacteria 
E)  prochlorophytes 
A)  mycoplasmas 
B)  purple and green bacteria 
C)  spiroplasmas 
D)  cyanobacteria 
E)  prochlorophytes

Exam 13: Prokaryotes and Viruses

Phylogenetic analysis indicates that there are at least ______ major lineages of Bacteria.

Which of the following statements concerning nanotubes is FALSE?

The great majority of plant viruses have a genome composed of single-stranded RNA.

Structures called _______ connect two cells and draw them together for DNA transfer.

Which of the following statements about the environmental ranges of cyanobacteria is FALSE?

In the process of nitrogen fixation:

A coccus has a ______ shape.

Which of the following statements about viruses is FALSE?

Mycoplasmas have cell walls containing peptidoglycan.

One method by which prokaryotes reproduce asexually is binary fission.

Many species of Archaea are pathogenic to plants.

A viral disease of plants in which the symptoms are small, light-colored flecks intermingled with the normal green of leaves and fruit is called:

Which of the following is the uptake of DNA by a prokaryotic cell from its environment?

In flowering plants, phytoplasmas are generally confined to the xylem.

Which of the following statements about prokaryotic endospores is FALSE?

A viral capsid is a:

Which of the following statements concerning the hypersensitive response is FALSE?

Which of the following statements does NOT describe the plasma membrane of prokaryotes?

Transduction is a type of lateral gene transfer.

Which group of photosynthetic prokaryotes has bacteriochlorophyll and only one photosystem?

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters