Question 1

A virus in a lysogenic cycle is referred to as a ____.

Accepted Answer

A)  prophage 
B)  virulent phage 
C)  artificial phage 
D)  T-even phage 
E)  lytic phage 
A)  prophage 
B)  virulent phage 
C)  artificial phage 
D)  T-even phage 
E)  lytic phage

Question 2

What makes a prion unique as an infectious particle?

Accepted Answer

Prions are the only

Question 3

Temperate bacteriophages ____.

Accepted Answer

A)  kill their hosts during each cycle of infection 
B)  infect only animals 
C)  may enter an inactive phase in which they do not kill their host 
D)  are enveloped viruses 
E)  infect organisms living in temperate environments 
A)  kill their hosts during each cycle of infection 
B)  infect only animals 
C)  may enter an inactive phase in which they do not kill their host 
D)  are enveloped viruses 
E)  infect organisms living in temperate environments

Question 4

A bacterial cell that is bio-met-leu+thr-thi+is infected by a virus carrying bacterial DNA containing bio+met+leu-thr-thi+. If all five genes from the virally transduced DNA are recombined into the recipient cell, what kinds of nutrients will the resulting cell still require from the medium in order to grow? Explain your answer.

Accepted Answer

If all five of the transduced genes reco

Question 5

All viruses must contain ____.

Accepted Answer

A)  proteins 
B)  carbohydrates and proteins 
C)  proteins and nucleic acids 
D)  nucleic acids 
E)  carbohydrates, proteins, lipids, and nucleic acids 
A)  proteins 
B)  carbohydrates and proteins 
C)  proteins and nucleic acids 
D)  nucleic acids 
E)  carbohydrates, proteins, lipids, and nucleic acids

Question 6

F+cells ____.

Accepted Answer

A)  are able to conjugate with donor cells 
B)  are able to conjugate with recipient cells 
C)  are able to conjugate with other F+cells 
D)  receive DNA during conjugation 
E)  are infected with a virus 
A)  are able to conjugate with donor cells 
B)  are able to conjugate with recipient cells 
C)  are able to conjugate with other F+cells 
D)  receive DNA during conjugation 
E)  are infected with a virus

Question 7

Which of the following diseases is not caused by prions?

Accepted Answer

A)  Creutzfeldt-Jakob disease 
B)  mad cow disease 
C)  Marburg hemorrhagic fever 
D)  bovine spongiform encephalopathy 
E)  kuru 
A)  Creutzfeldt-Jakob disease 
B)  mad cow disease 
C)  Marburg hemorrhagic fever 
D)  bovine spongiform encephalopathy 
E)  kuru

Question 8

Viroids ____.

Accepted Answer

A)  are more complex than viruses 
B)  have large DNA genomes 
C)  encode their own polymerase for nucleic acid replication 
D)  cause diseases in plants 
E)  infect animal cells 
A)  are more complex than viruses 
B)  have large DNA genomes 
C)  encode their own polymerase for nucleic acid replication 
D)  cause diseases in plants 
E)  infect animal cells

Question 9

After conjugation between an F+cell and an F-cell, does the F-cell remain as F-or does it become F+? After conjugation between an Hfr cell and an F-cell, does the F-cell remain as F-or does it become F+? Explain each answer.

Accepted Answer

After conjugation between F⁺and F^-cells, t

Question 10

Retroviruses ____.

Accepted Answer

A)  have DNA genomes 
B)  use an RNA intermediate to replicate their genome 
C)  replicate their RNA genome directly to produce progeny RNA genomes 
D)  do not have an envelope 
E)  require reverse transcriptase to replicate their genome 
A)  have DNA genomes 
B)  use an RNA intermediate to replicate their genome 
C)  replicate their RNA genome directly to produce progeny RNA genomes 
D)  do not have an envelope 
E)  require reverse transcriptase to replicate their genome

Question 11

The movement of genetic material between organisms other than by descent is called ____.

Accepted Answer

A)  vertical gene transfer 
B)  horizontal gene transfer 
C)  parallel gene transfer 
D)  sexual reproduction 
E)  asexual reproduction 
A)  vertical gene transfer 
B)  horizontal gene transfer 
C)  parallel gene transfer 
D)  sexual reproduction 
E)  asexual reproduction

Question 12

Figure 17.2
-
The accompanying figure above shows the distances between genes in minutes. Assume that the time listed between two genes corresponds to the transfer time of the first of the two genes in the pair. Use the figure to answer questions .
The genetic map shown in the figure was generated by identifying transferred genes after ____.

Accepted Answer

A)  allowing transformation to proceed for varying amounts of time 
B)  allowing conjugation to proceed for varying amounts of time 
C)  bacterial cells were infected by various bacteriophages 
D)  replica plating of E. coli auxotrophs 
E)  allowing transduction to proceed for varying amounts of time 
A)  allowing transformation to proceed for varying amounts of time 
B)  allowing conjugation to proceed for varying amounts of time 
C)  bacterial cells were infected by various bacteriophages 
D)  replica plating of E. coli auxotrophs 
E)  allowing transduction to proceed for varying amounts of time

Question 13

A plate of solid growth medium with colonies on it is pressed gently onto sterile velveteen. The velveteen "stamp" is used to make identical plates. This technique is called ____.

Accepted Answer

A)  replication 
B)  replica plating 
C)  plating 
D)  plate making 
E)  horizontal gene transfer 
A)  replication 
B)  replica plating 
C)  plating 
D)  plate making 
E)  horizontal gene transfer

Question 14

The F factor contains genes that encode____.

Accepted Answer

A)  lipids of the cytoplasmic bridge 
B)  receptor proteins on the recipient cell 
C)  bacteriophages 
D)  DNA polymerase for plasmid DNA replication 
E)  proteins of the sex pilus 
A)  lipids of the cytoplasmic bridge 
B)  receptor proteins on the recipient cell 
C)  bacteriophages 
D)  DNA polymerase for plasmid DNA replication 
E)  proteins of the sex pilus

Question 15

Bacterial cells that cannot readily pick up DNA molecules from their surroundings can be induced to do so by ____.

Accepted Answer

A)  artificial transformation 
B)  double crossing-over 
C)  crossing-over 
D)  constriction 
E)  infection 
A)  artificial transformation 
B)  double crossing-over 
C)  crossing-over 
D)  constriction 
E)  infection

Question 16

Laboratory strains of E. coli ____.

Accepted Answer

A)  undergo meiosis 
B)  divide every 2 hours 
C)  can be transformed, but not conjugated 
D)  have been engineered to produce human insulin 
E)  are harmful to humans 
A)  undergo meiosis 
B)  divide every 2 hours 
C)  can be transformed, but not conjugated 
D)  have been engineered to produce human insulin 
E)  are harmful to humans

Question 17

R plasmids provide ____.

Accepted Answer

A)  antibiotic resistance 
B)  a fertility factor 
C)  transformation ability 
D)  genes necessary for genetic recombination 
E)  nutrients 
A)  antibiotic resistance 
B)  a fertility factor 
C)  transformation ability 
D)  genes necessary for genetic recombination 
E)  nutrients

Question 18

Ammonium chloride, a commonly used salt in minimal medium, ____.

Accepted Answer

A)  is an organic carbon source 
B)  provides nitrogen 
C)  jellifies the medium 
D)  liquefies the medium 
E)  sterilizes the medium 
A)  is an organic carbon source 
B)  provides nitrogen 
C)  jellifies the medium 
D)  liquefies the medium 
E)  sterilizes the medium

Question 19

The linear DNA fragments taken up from disrupted infective cells recombine with the chromosomal DNA of the noninfective cells by ____, much in the same way as genetic recombination takes place during conjugation.

Accepted Answer

A)  meiosis 
B)  metaphase II 
C)  nuclear division 
D)  crossovers 
E)  transformation 
A)  meiosis 
B)  metaphase II 
C)  nuclear division 
D)  crossovers 
E)  transformation

Question 20

Bacteria ____.

Accepted Answer

A)  are haploid 
B)  are diploid 
C)  are polyploid 
D)  have double-stranded RNA genomes 
E)  have single-stranded DNA genomes 
A)  are haploid 
B)  are diploid 
C)  are polyploid 
D)  have double-stranded RNA genomes 
E)  have single-stranded DNA genomes

Exam 17: Bacterial and Viral Genetics

A virus in a lysogenic cycle is referred to as a ____.

What makes a prion unique as an infectious particle?

Temperate bacteriophages ____.

All viruses must contain ____.

F+cells ____.

Which of the following diseases is not caused by prions?

Viroids ____.

After conjugation between an F+cell and an F-cell, does the F-cell remain as F-or does it become F+? After conjugation between an Hfr cell and an F-cell, does the F-cell remain as F-or does it become F+? Explain each answer.

Retroviruses ____.

The movement of genetic material between organisms other than by descent is called ____.

A plate of solid growth medium with colonies on it is pressed gently onto sterile velveteen. The velveteen "stamp" is used to make identical plates. This technique is called ____.

The F factor contains genes that encode____.

Bacterial cells that cannot readily pick up DNA molecules from their surroundings can be induced to do so by ____.

Laboratory strains of E. coli ____.

R plasmids provide ____.

Ammonium chloride, a commonly used salt in minimal medium, ____.

The linear DNA fragments taken up from disrupted infective cells recombine with the chromosomal DNA of the noninfective cells by ____, much in the same way as genetic recombination takes place during conjugation.

Bacteria ____.

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

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

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

F⁺cells ____.

After conjugation between an F⁺cell and an F^-cell, does the F^-cell remain as F^-or does it become F⁺? After conjugation between an Hfr cell and an F^-cell, does the F^-cell remain as F^-or does it become F⁺? Explain each answer.