Question 1

How many strands are used as a template in semiconservative replication?

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   1 or 2

Question 2

Information sources used by Watson and Crick to determine the structure of DNA included

Accepted Answer

A)   electron micrographs of individual DNA molecules.
B)   light micrographs of bacteriophage particles.
C)   light micrographs of individual bacterial chromosomes.
D)   nuclear magnetic resonance analysis of DNA.
E)   X-ray crystallography of double-stranded DNA.

Question 3

The enzyme DNA ligase is required continuously during DNA replication in order for

Accepted Answer

A)   fragments of the leading strand to be joined together.
B)   fragments of the lagging strand to be joined together.
C)   the parental strands to be joined back together.
D)   3ʹ-deoxynucleoside triphosphates to be converted to 5ʹ-deoxynucleoside triphosphates.
E)   the complex of proteins that work together at the replication fork to remain intact.

Question 4

To replicate their DNA in a timely manner, most eukaryotic chromosomes
a. contain linear molecules of single-stranded DNA.
b. normally have uncoiled DNA.
c. have multiple origins of replication.
d. have two replication forks that move in the same direction.
e. are composed entirely of DNA.

Accepted Answer

The answer of To replicate their DNA in a timely...

Question 5

The DNA binding dye that was developed about 100 years ago (and is now called Feulgen stain)  binds to DNA and stains nuclei a bright purple in direct proportion to the amount of DNA present in cells.As a consequence of this property, the dye revealed that gametes have _______ DNA as somatic cells have.

Accepted Answer

A)   one-third as much
B)   one-half as much
C)   as much
D)   twice as much
E)   four times as much

Question 6

If DNA polymerase III introduces an incorrect nucleotide, what is the first corrective action made by the DNA repair system?
a. The mismatch repair system scans for base-pairing mismatches.
b. The excision repair proteins remove the incorrect nucleotide.
c. DNA ligase connects the correct nucleotide.
d. The replication complex excises the incorrect nucleotide.
e. There is no correction, because nucleotide errors by DNA polymerases are not repaired.

Accepted Answer

The answer of If DNA polymerase III introduces an incorrect...

Question 7

Starting with a single double-stranded DNA molecule, _______ double-stranded DNA molecules will be created after five rounds of PCR (assuming that the PCR works perfectly) .

Accepted Answer

A)   5
B)   10
C)   16
D)   32
E)   1,024

Question 8

Ideally, PCR _______ increases the amount of DNA during additional cycles.

Accepted Answer

A)   semiconservatively
B)   gradually
C)   linearly
D)   systematically
E)   exponentially

Question 9

Explain how the experiment of Avery and colleagues ruled out protein and RNA as the transforming substance and suggested that DNA was the genetic material.

Accepted Answer

Even after the transforming substance wa...

Question 10

DNA production during PCR can be calculated by the rule of 2n, where n equals the number of rounds of amplification.About how many rounds of PCR are required to produce a billion DNA molecules from a single molecule, assuming that the PCR works perfectly?

Accepted Answer

A)   10
B)   20
C)   30
D)   100
E)   1,000

Question 11

Researchers can use PCR to introduce mutations in a gene.To do so, they can use a DNA primer that has one or more incorrect nucleotides.A low annealing temperature will allow the primer to anneal with the DNA and, if there are complementary base pairings at the 3ʹ end of the primer, initiate DNA polymerase activity.Why are these errors not corrected during PCR?

Accepted Answer

The PCR solution doe...

Question 12

In Griffith's experiment, some substance from heat-killed S-type cells resulted in _______ of R-type cells.

Accepted Answer

The answer of In Griffith's experiment, some substance from heat-killed...

Question 13

The "antiparallel relationship" of the two strands of DNA refers to

Accepted Answer

A)   the twisted configuration of the strands.
B)   the alternative branching pattern of the strands.
C)   the alignment of the strands, such that one strand starts with a 3 carbon and the other starts with a 5 carbon.
D)   the view at one end of the molecule-one strand has an A wherever the other has a T, and one has a G wherever the other has a C.
E)   which strand begins with a purine and which strand begins with a pyrimidine.

Question 14

The strand of DNA that grows continuously as the replication fork opens up is known as the _______ strand.

Accepted Answer

A)   leading
B)   lagging
C)   primer
D)   template
E)   Okazaki

Question 15

PCR is commonly used in research, forensics, and for the diagnosis of pathogens and genetic diseases.A commercial standardized diagnostic PCR test has been developed that uses one set of primers to amplify a short DNA template.For which of the following scenarios would such a standardized PCR test be most appropriate:

Accepted Answer

A)   Identifying a suspect using hair found at the site of a robbery.
B)   Testing for the presence of the bacteria Shigella in a water supply.
C)   Testing, generally, for bacterial, fungal, and amoebic contamination of a water supply.
D)   Isolation of the full myoglobin gene from a large piece of muscle.
E)   Using a fecal sample to determine which dog is off leash in the neighborhood.

Question 16

The short "starter" strand used in DNA replication is called the _______; in most organisms it is made up of _______.

Accepted Answer

A)   template; DNA
B)   template; RNA
C)   primer; DNA
D)   primer; RNA
E)   Okazaki fragment; DNA

Question 17

The region of DNA where replication begins is called the _______.

Accepted Answer

origin of ...

Question 18

Mismatch repair differs from the other types of DNA repair in that it

Accepted Answer

A)   occurs as the DNA is being replicated.
B)   requires double-stranded DNA.
C)   reduces the mutation rate.
D)   corrects changes made to bases, such as the formation of dimers.
E)   occurs only in prokaryotes.

Question 19

Which three major properties of genes can be attributed to the structure of DNA?

Accepted Answer

A)   They contain information, direct the synthesis of proteins, and are contained in the cell nucleus.
B)   They contain nitrogenous bases, direct the synthesis of RNA, and are contained in the cell nucleus.
C)   They replicate exactly, are contained in the cell nucleus, and direct the synthesis of cellular proteins.
D)   They encode the organism's phenotype, are passed on from one generation to the next, and contain nitrogenous bases.
E)   They contain information, replicate exactly, and can change to produce a mutation.

Question 20

Refer to the figure, which illustrates the chemical structure of DNA.  Which label corresponds to a 3ʹ end?

Accepted Answer

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

Exam 13: Dna and Its Role in Heredity

Refer to the figure, which illustrates the chemical structure of DNA. Which label corresponds to a 3ʹ end?

Correct Answer
verified

DNA production during PCR can be calculated by the rule of 2ⁿ, where n equals the number of rounds of amplification.About how many rounds of PCR are required to produce a billion DNA molecules from a single molecule, assuming that the PCR works perfectly?

Correct Answer
verified

The "antiparallel relationship" of the two strands of DNA refers to

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The strand of DNA that grows continuously as the replication fork opens up is known as the _______ strand.

Correct Answer
verified

Starting with a single double-stranded DNA molecule, _______ double-stranded DNA molecules will be created after five rounds of PCR (assuming that the PCR works perfectly) .

Correct Answer
verified

To replicate their DNA in a timely manner, most eukaryotic chromosomes a. contain linear molecules of single-stranded DNA. b. normally have uncoiled DNA. c. have multiple origins of replication. d. have two replication forks that move in the same direction. e. are composed entirely of DNA.

Correct Answer
verified

The enzyme DNA ligase is required continuously during DNA replication in order for

Correct Answer
verified

Explain how the experiment of Avery and colleagues ruled out protein and RNA as the transforming substance and suggested that DNA was the genetic material.

Correct Answer
verified
Even after the transforming substance wa...
View Answer

Correct Answer
verified
The PCR solution doe...
View Answer

Mismatch repair differs from the other types of DNA repair in that it

Correct Answer
verified

Ideally, PCR _______ increases the amount of DNA during additional cycles.

Correct Answer
verified

The region of DNA where replication begins is called the _______.

Correct Answer
verified
origin of ...
View Answer

Which three major properties of genes can be attributed to the structure of DNA?

Correct Answer
verified

In Griffith's experiment, some substance from heat-killed S-type cells resulted in _______ of R-type cells.

Correct Answer
verified

Correct Answer
verified

How many strands are used as a template in semiconservative replication?

Correct Answer
verified

The short "starter" strand used in DNA replication is called the _; in most organisms it is made up of _.

Correct Answer
verified

Information sources used by Watson and Crick to determine the structure of DNA included

Correct Answer
verified

Exam 13: Dna and Its Role in Heredity

Refer to the figure, which illustrates the chemical structure of DNA. Which label corresponds to a 3ʹ end?

Correct AnswerverifiedShow Answer

DNA production during PCR can be calculated by the rule of 2n, where n equals the number of rounds of amplification.About how many rounds of PCR are required to produce a billion DNA molecules from a single molecule, assuming that the PCR works perfectly?

Correct AnswerverifiedShow Answer

The "antiparallel relationship" of the two strands of DNA refers to

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The strand of DNA that grows continuously as the replication fork opens up is known as the _______ strand.

Correct AnswerverifiedShow Answer

Starting with a single double-stranded DNA molecule, _______ double-stranded DNA molecules will be created after five rounds of PCR (assuming that the PCR works perfectly) .

Correct AnswerverifiedShow Answer

To replicate their DNA in a timely manner, most eukaryotic chromosomes a. contain linear molecules of single-stranded DNA. b. normally have uncoiled DNA. c. have multiple origins of replication. d. have two replication forks that move in the same direction. e. are composed entirely of DNA.

Correct AnswerverifiedShow Answer

The enzyme DNA ligase is required continuously during DNA replication in order for

Correct AnswerverifiedShow Answer

Explain how the experiment of Avery and colleagues ruled out protein and RNA as the transforming substance and suggested that DNA was the genetic material.

Correct AnswerverifiedEven after the transforming substance wa...View AnswerShow Answer

Correct AnswerverifiedThe PCR solution doe...View AnswerShow Answer

Mismatch repair differs from the other types of DNA repair in that it

Correct AnswerverifiedShow Answer

Ideally, PCR _______ increases the amount of DNA during additional cycles.

Correct AnswerverifiedShow Answer

The region of DNA where replication begins is called the _______.

Correct Answerverifiedorigin of ...View AnswerShow Answer

Which three major properties of genes can be attributed to the structure of DNA?

Correct AnswerverifiedShow Answer

In Griffith's experiment, some substance from heat-killed S-type cells resulted in _______ of R-type cells.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

How many strands are used as a template in semiconservative replication?

Correct AnswerverifiedShow Answer

The short "starter" strand used in DNA replication is called the _______; in most organisms it is made up of _______.

Correct AnswerverifiedShow Answer

Information sources used by Watson and Crick to determine the structure of DNA included

Correct AnswerverifiedShow Answer

Correct Answer
verified

DNA production during PCR can be calculated by the rule of 2ⁿ, where n equals the number of rounds of amplification.About how many rounds of PCR are required to produce a billion DNA molecules from a single molecule, assuming that the PCR works perfectly?

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
Even after the transforming substance wa...
View Answer

Correct Answer
verified
The PCR solution doe...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
origin of ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The short "starter" strand used in DNA replication is called the _; in most organisms it is made up of _.

Correct Answer
verified

Correct Answer
verified