Question 1

Composite transposons are composed of

Accepted Answer

A) the transposase gene flanked by inverted repeat sequences. 
B) a mobile gene flanked by inverted repeat sequences. 
C) the transposase gene only. 
D) several genes,such as antibiotic resistance genes,flanked by transposase genes. 
E) several genes,including transposase,flanked by inverted repeat sequences. 
A) the transposase gene flanked by inverted repeat sequences. 
B) a mobile gene flanked by inverted repeat sequences. 
C) the transposase gene only. 
D) several genes,such as antibiotic resistance genes,flanked by transposase genes. 
E) several genes,including transposase,flanked by inverted repeat sequences.

Question 2

The most common form of spontaneous replication error is

Accepted Answer

A) tautomeric shift. 
B) double-stranded DNA breaks. 
C) thymine dimer addition. 
D) base analogue addition. 
E) DNA intercalation. 
A) tautomeric shift. 
B) double-stranded DNA breaks. 
C) thymine dimer addition. 
D) base analogue addition. 
E) DNA intercalation.

Question 3

Why do eukaryotic chromosomes have multiple origins of replication? Design an experiment that allows you to test your hypothesis.

Accepted Answer

Multiple origin of replication sites all

Question 4

Double-stranded break repair mechanisms

Accepted Answer

A) are error prone. 
B) may join nonhomologous ends of DNA together. 
C) are part of the SOS repair system. 
D) may use homologous DNA to repair the damage. 
E) are error prone and may join nonhomologous ends of DNA together or use homologous DNA to repair the damage. 
A) are error prone. 
B) may join nonhomologous ends of DNA together. 
C) are part of the SOS repair system. 
D) may use homologous DNA to repair the damage. 
E) are error prone and may join nonhomologous ends of DNA together or use homologous DNA to repair the damage.

Question 5

An isolate of a mutant bacterium appears to grow more slowly than the wild-type population from which it was isolated.Further studies showed that the slower growth was due to a markedly reduced DNA polymerase I activity.From this information,one would expect that this organism would also be deficient in the activity of DNA

Accepted Answer

A) excision repair. 
B) recombination. 
C) transcription. 
D) translation. 
E) unwinding. 
A) excision repair. 
B) recombination. 
C) transcription. 
D) translation. 
E) unwinding.

Question 6

DNA contains thymine rather than uracil.Why is the presence of thymine in DNA advantageous? What effect would the presence of uracil in DNA have on DNA repair?

Accepted Answer

Deamination of cytosine result

Question 7

Multiple sites of DNA replication along eukaryotic chromosomes are known as

Accepted Answer

A) replicons. 
B) multireplication forks. 
C) helicase loaders. 
D) ARS elements. 
E) None of these answers are correct. 
A) replicons. 
B) multireplication forks. 
C) helicase loaders. 
D) ARS elements. 
E) None of these answers are correct.

Question 8

Bypass polymerases that are more tolerant of DNA damage and can continue DNA synthesis at damaged sites produce a daughter strand that contains ________.

Accepted Answer

errors or mutations or more er

Question 9

Ultraviolet (UV)light-treated bacteria would have increased DNA damage in the form of

Accepted Answer

A) analog incorporation. 
B) pyrimidine dimer formation. 
C) intercalation of the bases. 
D) direct transition of the bases. 
E) deamination. 
A) analog incorporation. 
B) pyrimidine dimer formation. 
C) intercalation of the bases. 
D) direct transition of the bases. 
E) deamination.

Question 10

Base-modifying chemicals such as aflatoxin B1 or nitrosoguanidine cause mutations by

Accepted Answer

A) increasing the likelihood of depurination. 
B) causing double-stranded breaks in the DNA sugar-phosphate backbone. 
C) causing mispairing during DNA replication. 
D) causing pyrimidine dimers. 
E) increasing the likelihood of depurination or causing mispairing during DNA replication. 
A) increasing the likelihood of depurination. 
B) causing double-stranded breaks in the DNA sugar-phosphate backbone. 
C) causing mispairing during DNA replication. 
D) causing pyrimidine dimers. 
E) increasing the likelihood of depurination or causing mispairing during DNA replication.

Question 11

At least one aspect of aging has been determined to be the shortening of ________ with each successive round of DNA replication.

Accepted Answer

The answer of At least one aspect of aging has...

Question 12

________ are mobile genetic elements discovered in corn by Barbara McClintock.

Accepted Answer

Transposon

Question 13

The mechanism that allows chromatin exchange during meiosis in eukaryotes is ________.

Accepted Answer

homologous

Composite transposons are composed of

The most common form of spontaneous replication error is

Why do eukaryotic chromosomes have multiple origins of replication? Design an experiment that allows you to test your hypothesis.

Double-stranded break repair mechanisms

DNA contains thymine rather than uracil.Why is the presence of thymine in DNA advantageous? What effect would the presence of uracil in DNA have on DNA repair?

Multiple sites of DNA replication along eukaryotic chromosomes are known as

Bypass polymerases that are more tolerant of DNA damage and can continue DNA synthesis at damaged sites produce a daughter strand that contains ________.

Ultraviolet (UV)light-treated bacteria would have increased DNA damage in the form of

Base-modifying chemicals such as aflatoxin B₁or nitrosoguanidine cause mutations by

At least one aspect of aging has been determined to be the shortening of ________ with each successive round of DNA replication.

________ are mobile genetic elements discovered in corn by Barbara McClintock.

The mechanism that allows chromatin exchange during meiosis in eukaryotes is ________.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

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Exam 17: DNA Replication, repair, and Recombination

Composite transposons are composed of

The most common form of spontaneous replication error is

Why do eukaryotic chromosomes have multiple origins of replication? Design an experiment that allows you to test your hypothesis.

Double-stranded break repair mechanisms

DNA contains thymine rather than uracil.Why is the presence of thymine in DNA advantageous? What effect would the presence of uracil in DNA have on DNA repair?

Multiple sites of DNA replication along eukaryotic chromosomes are known as

Bypass polymerases that are more tolerant of DNA damage and can continue DNA synthesis at damaged sites produce a daughter strand that contains ________.

Ultraviolet (UV)light-treated bacteria would have increased DNA damage in the form of

Base-modifying chemicals such as aflatoxin B1 or nitrosoguanidine cause mutations by

At least one aspect of aging has been determined to be the shortening of ________ with each successive round of DNA replication.

________ are mobile genetic elements discovered in corn by Barbara McClintock.

The mechanism that allows chromatin exchange during meiosis in eukaryotes is ________.

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

Phototrophic Energy Metabolism: Photosynthesis

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters

Base-modifying chemicals such as aflatoxin B₁or nitrosoguanidine cause mutations by