Question 1

Why might the brain cells show abnormally low energy metabolism in individuals with Alzheimer's disease?

Accepted Answer

Defective mitochondrial cytochrome oxidase genes may reduce energy metabolism.

Question 2

Most bacteria are capable of natural transformation.

Accepted Answer

A) True 
 B)False  False

Question 3

Molecular evidence suggests that DNA sequences may have been transferred between all of the following except

Accepted Answer

A)  mtDNA and nuclear DNA 
B)  cpDNA and mtDNA 
C)  different cpDNA molecules 
D)  different species of bacteria 
E)  different species of mammals 
A)  mtDNA and nuclear DNA 
B)  cpDNA and mtDNA 
C)  different cpDNA molecules 
D)  different species of bacteria 
E)  different species of mammals E

Question 4

Two bacteria grow together.One appears to donate DNA to the other.One of the bacteria contains a bacteriophage that is normally quiescent but occasionally forms a plaque.What sort of genetic exchange is most likely to be occurring?

Accepted Answer

A)  transformation 
B)  conjugation 
C)  transduction 
D)  electroporation 
E)  transposition 
A)  transformation 
B)  conjugation 
C)  transduction 
D)  electroporation 
E)  transposition

Question 5

Describe five types of mutants that can be observed in bacteria.

Accepted Answer

Mutations affecting colony morphology;mu

Question 6

Which of the following is not true of human mtDNA?

Accepted Answer

A)  it encodes all of its own proteins 
B)  it can all be traced back to females that lived in Africa 20,000 years ago 
C)  it encodes components of the electron transport chain 
D)  it encodes all of the rRNA for its own ribosomes 
E)  it has a higher mutation frequency than nuclear DNA 
A)  it encodes all of its own proteins 
B)  it can all be traced back to females that lived in Africa 20,000 years ago 
C)  it encodes components of the electron transport chain 
D)  it encodes all of the rRNA for its own ribosomes 
E)  it has a higher mutation frequency than nuclear DNA

Question 7

Bacteriophages proliferate in the host cell and then lyse the cell when they have perhaps 100 new phages.How many phages on average could be produced from a culture with 109 bacteria?

Accepted Answer

A)  109 
B)  1010 
C)  1011 
D)  1012 
E)  1013 
A)  109 
B)  1010 
C)  1011 
D)  1012 
E)  1013

Question 8

Which type of DNA sequences might be studied to help reunite displaced children with their mothers?

Accepted Answer

A)  mtDNA sequences 
B)  cpDNA sequences 
C)  Y-chromosome sequences 
D)  highly conserved nuclear sequences 
E)  tRNA sequences 
A)  mtDNA sequences 
B)  cpDNA sequences 
C)  Y-chromosome sequences 
D)  highly conserved nuclear sequences 
E)  tRNA sequences

Question 9

A plasmid that can integrate into the host bacterial genome is called an episome.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following is not a symptom of myoclonic epilepsy and ragged red fibre disease (MERRF)?

Accepted Answer

A)  heart and kidney problems 
B)  sudden fever 
C)  deafness 
D)  progressive memory loss 
E)  uncontrolled jerking 
A)  heart and kidney problems 
B)  sudden fever 
C)  deafness 
D)  progressive memory loss 
E)  uncontrolled jerking

Question 11

Which of the following is an infection in newborn infants when born to a mother with gonorrhea?

Accepted Answer

A)  pneumonia 
B)  brain lesions 
C)  eye infection 
D)  heart disease 
E)  tendon inflammation 
A)  pneumonia 
B)  brain lesions 
C)  eye infection 
D)  heart disease 
E)  tendon inflammation

Question 12

Mating between bacteria can be disrupted using a kitchen blender.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is a bacterial disease that occurs among sexually active individuals?

Accepted Answer

A)  gonorrhea 
B)  Haemophilus infections 
C)  pneumonia 
D)  pancreatitis 
E)  jaundice 
A)  gonorrhea 
B)  Haemophilus infections 
C)  pneumonia 
D)  pancreatitis 
E)  jaundice

Question 14

Mitochondrial DNA has an approximately 10-fold higher rate of mutation compared to nuclear DNA.

Accepted Answer

A) True 
 B)False

Question 15

IS elements are plasmids that "insert" new phenotypes to bacteria.

Accepted Answer

A) True 
 B)False

Question 16

Traits showing non-Mendelian inheritance are inherited from

Accepted Answer

A)  the mother. 
B)  the father. 
C)  both parents. 
D)  Depending on species,inheritance could be from mother,father,or both parents. 
E)  both grandparents. 
A)  the mother. 
B)  the father. 
C)  both parents. 
D)  Depending on species,inheritance could be from mother,father,or both parents. 
E)  both grandparents.

Question 17

The endosymbiont hypothesis posited by Lynn Margulis has now been elevated to being considered a theory.What molecular evidence strongly supports the hypothesis to the point that it is now accepted as a theory?

Accepted Answer

1.Both mitochondria and chloroplasts hav

Question 18

There are "promiscuous plasmids," plasmids that can be interchanged between very different bacteria.These often pick up transposons carrying antibiotic resistance.We are in a hospital that has an outbreak of a variety of bacteria carrying resistance to streptomycin,gentamicin,and penicillin.Which of these would not be helpful in determining how this was occurring?

Accepted Answer

A)  Test all the resistant bacteria for a plasmid. 
B)  See if the same plasmid could be isolated from all resistant bacteria. 
C)  See if the plasmid isolated from the bacteria conferred resistance to a test bacterium. 
D)  With restriction mapping,see if the plasmid seemed to contain transposons known to carry resistance to these antibiotics. 
E)  Test whether the plasmids contained an origin of replication. 
A)  Test all the resistant bacteria for a plasmid. 
B)  See if the same plasmid could be isolated from all resistant bacteria. 
C)  See if the plasmid isolated from the bacteria conferred resistance to a test bacterium. 
D)  With restriction mapping,see if the plasmid seemed to contain transposons known to carry resistance to these antibiotics. 
E)  Test whether the plasmids contained an origin of replication.

Question 19

The lysogenic cycle of phage production results in bacterial cell lysis.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following has not been associated with aging in humans?

Accepted Answer

A)  loss of mitochondria 
B)  5kb and 7.4kb deletions in mtDNA of heart cells 
C)  loss of cytochrome oxidase c genes 
D)  mutations in mtDNA 
E)  shortening of mtDNA telomeres 
A)  loss of mitochondria 
B)  5kb and 7.4kb deletions in mtDNA of heart cells 
C)  loss of cytochrome oxidase c genes 
D)  mutations in mtDNA 
E)  shortening of mtDNA telomeres

Exam 17: Manipulating the Genomes of Eukaryotes

Why might the brain cells show abnormally low energy metabolism in individuals with Alzheimer's disease?

Most bacteria are capable of natural transformation.

Molecular evidence suggests that DNA sequences may have been transferred between all of the following except

Two bacteria grow together.One appears to donate DNA to the other.One of the bacteria contains a bacteriophage that is normally quiescent but occasionally forms a plaque.What sort of genetic exchange is most likely to be occurring?

Describe five types of mutants that can be observed in bacteria.

Which of the following is not true of human mtDNA?

Bacteriophages proliferate in the host cell and then lyse the cell when they have perhaps 100 new phages.How many phages on average could be produced from a culture with 109 bacteria?

Which type of DNA sequences might be studied to help reunite displaced children with their mothers?

A plasmid that can integrate into the host bacterial genome is called an episome.

Which of the following is not a symptom of myoclonic epilepsy and ragged red fibre disease (MERRF)?

Which of the following is an infection in newborn infants when born to a mother with gonorrhea?

Mating between bacteria can be disrupted using a kitchen blender.

Which of the following is a bacterial disease that occurs among sexually active individuals?

Mitochondrial DNA has an approximately 10-fold higher rate of mutation compared to nuclear DNA.

IS elements are plasmids that "insert" new phenotypes to bacteria.

Traits showing non-Mendelian inheritance are inherited from

The endosymbiont hypothesis posited by Lynn Margulis has now been elevated to being considered a theory.What molecular evidence strongly supports the hypothesis to the point that it is now accepted as a theory?

The lysogenic cycle of phage production results in bacterial cell lysis.

Which of the following has not been associated with aging in humans?

Mendels Principles of Heredity

Extensions to Mendels Laws

The Chromosome Theory of Inheritance

Linkage, Recombination, and the Mapping of Genes on Chromosomes

Dna Structure, Replication, and Recombination

Anatomy and Function of a Gene: Dissection Through Mutation

Gene Expression: the Flow of Information From Dna to Rna to Protein

Digital Analysis of Genomes

Genome Annotation

Analyzing Genomic Variation

The Eukaryotic Chromosome

Chromosomal Rearrangements and Changes in Chromosome Number

Bacterial Genetics

Organellar Inheritance

Gene Regulation in Prokaryotes

Gene Regulation in Eukaryotes

The Genetic Analysis of Development

The Genetics of Cancer

Variation and Selection in Populations

Genetics of Complex Traits

Exploring Synthetic Biology: Concepts, Techniques, and Applications

Filters

Bacteriophages proliferate in the host cell and then lyse the cell when they have perhaps 100 new phages.How many phages on average could be produced from a culture with 10⁹ bacteria?