Question 1

A nucleotide is made up of a phosphate group, a five-carbon sugar molecule, and

Accepted Answer

A)   two of five nitrogeneous bases.
B)   one of five nitrogeneous bases.
C)   one of four nitrogeneous bases.
D)   two of four nitrogeneous bases.
E)   three of six nitrogeneous bases.F) B) and C)
G) C) and E) C

Question 2

Hydrogen bonds can form between guanine and ____, and between adenine and ____.

Accepted Answer

A)   phosphate; sugar
B)   thymine; cytosine
C)   cytosine; thymine
D)   sugar; phosphate
E)   adenine; guanineF) A) and B)
G) A) and E) C

Question 3

Match between columns
                        Premises: demonstrated that DNA is replicated semiconservatively

Accepted Answer

The Answer of Griffith and Avery and Meselson and Stahl is...

Question 4

Match between columns
                        Premises: demonstrated the ratio of nucleotide bases in DNA

Accepted Answer

The Answer of Chargaff and Avery and Meselson and Stahl is...

Question 5

In the experiments of Griffith, the conversion of nonlethal R-strain bacteria to lethal S-strain bacteria

Accepted Answer

A)   was due to genetic mutation.
B)   was due to transformation.
C)   proved that proteins are the genetic material.
D)   could not be reproduced by other researchers.
E)   was similar to experiments performed by Watson and Crick.F) D) and E)
G) A) and E)

Question 6

In replication, once the DNA strands have been separated, reformation of the double helix is prevented by

Accepted Answer

A)   DNA helicase enzyme.
B)   single-strand binding proteins.
C)   DNA polymerases.
D)   ATP.
E)   DNA primase.F) B) and C)
G) C) and D)

Question 7

X-ray diffraction images produced by ____ were used by Watson and Crick to infer the structure of DNA.

Accepted Answer

A)   Wilkins
B)   Griffith
C)   Franklin
D)   Hershey
E)   Watson and WilkinsF) B) and D)
G) A) and E)

Question 8

Primase is the enzyme responsible for

Accepted Answer

A)   unwinding the DNA double strand to allow DNA polymerase access to the template DNA.
B)   introducing nicks into the DNA double strand in order to prevent the formation of knots.
C)   hydrolyzing ATP to facilitate DNA unwinding.
D)   making short strands of RNA at the site of replication initiation.
E)   forming a replication fork in the DNA double helix.F) B) and D)
G) B) and C)

Question 9

Enzymes called ____ form breaks in the DNA molecules to prevent the formation of knots in the DNA helix during replication.

Accepted Answer

A)   topoisomerases
B)   single-strand binding proteins
C)   DNA polymerases
D)   RNA polymerases
E)   DNA ligasesF) B) and D)
G) B) and E)

Question 10

Match between columns
                        Premises: catalyzes the synthesis of an RNA primer at both leading and lagging strand

Accepted Answer

The Answer of DNA primase and Single-strand binding protein and is...

Question 11

Which is a powerful method for determining the 3D structure of a molecule?

Accepted Answer

A)   NMR spectroscopy
B)   3D electron microscopy
C)   Infrared spectroscopy
D)   Ultraviolet spectroscopy
E)   X-ray diffractionF) None of the above
G) A) and B)

Question 12

Briefly explain the experiments of Avery and his colleagues and those of Hershey and Chase. What did those experiments support?

Accepted Answer

Concepts to Consider: The experiments of...

Question 13

Match between columns
                        Premises: demonstrated that genetic traits can be transferred from one bacterium to another

Accepted Answer

The Answer of Meselson and Stahl and Griffith and Hershey is...

Question 14

From the DNA X-ray crystallography data, Franklin and Wilkins inferred that ____, while Watson and Crick determined that ____.

Accepted Answer

A)   purines and pyrimidines exist in a 1:1 ratio; DNA is helical
B)   phosphates are stacked liked rungs on a ladder; DNA is helical
C)   DNA is helical; DNA is the genetic material
D)   DNA is helical; the flat nucleotide bases are stacked upon each other
E)   the flat nucleotide bases are stacked upon each other; DNA is helical.F) A) and C)
G) A) and B)

Question 15

How is a bacterial chromosome replicated?

Accepted Answer

A)   The linear DNA molecule is replicated from multiple origins of replication bidirectionally.
B)   The linear DNA molecule is replicated from one origin of replication bidirectionally.
C)   The circular DNA molecule is replicated from multiple origins of replication bidirectionally.
D)   The circular DNA molecule is replicated from one origin of replication bidirectionally.
E)   The circular DNA molecule is replicated from one origin of replication unidirectionally.F) C) and D)
G) A) and E)

Question 16

Which of the following consists of short, noncoding, guanine-rich DNA sequences that repeat many times?

Accepted Answer

A)   DNA ligase
B)   Helicase
C)   Telomere
D)   Plasmid
E)   ApoptosisF) B) and D)
G) A) and D)

Question 17

Match between columns
                        Premises: discovered that the genetic material in bacteriophages is DNA

Accepted Answer

The Answer of Hershey and Chase and Avery and Meselson is...

Question 18

The ends of eukaryotic chromosomes can be lengthened by

Accepted Answer

A)   apoptosis.
B)   mismatch repair enzymes.
C)   primase.
D)   telomerase.
E)   DNA polymerase.F) None of the above
G) A) and B)

Question 19

Which of the following nucleotide sequences represents the complement to the DNA strand, 5′-AGATCCG-3′?

Accepted Answer

A)   5′-AGATCCG-3′
B)   3′-AGATCCG-5′
C)   5′-CTCGAAT-3′
D)   3′-CTCGAAT-5′
E)   3′-TCTAGGC-5′F) A) and E)
G) A) and B) E

Question 20

Which of the following causes the unwinding of the DNA double helix?

Accepted Answer

A)   DNA polymerase
B)   DNA helicase
C)   RNA primer
D)   Primosome
E)   RNA polymeraseF) B) and D)
G) C) and D)

Exam 12: DNA: The Carrier of Genetic Information

A nucleotide is made up of a phosphate group, a five-carbon sugar molecule, and

Correct Answer
verified
C

Hydrogen bonds can form between guanine and , and between adenine and .

Correct Answer
verified
C

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

In the experiments of Griffith, the conversion of nonlethal R-strain bacteria to lethal S-strain bacteria

Correct Answer
verified

In replication, once the DNA strands have been separated, reformation of the double helix is prevented by

Correct Answer
verified

X-ray diffraction images produced by ____ were used by Watson and Crick to infer the structure of DNA.

Correct Answer
verified

Primase is the enzyme responsible for

Correct Answer
verified

Enzymes called ____ form breaks in the DNA molecules to prevent the formation of knots in the DNA helix during replication.

Correct Answer
verified

In the following questions, match the component of DNA replication with its function.

Which is a powerful method for determining the 3D structure of a molecule?

Correct Answer
verified

Briefly explain the experiments of Avery and his colleagues and those of Hershey and Chase. What did those experiments support?

Correct Answer
verified
Concepts to Consider: The experiments of...
View Answer

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

From the DNA X-ray crystallography data, Franklin and Wilkins inferred that , while Watson and Crick determined that .

Correct Answer
verified

How is a bacterial chromosome replicated?

Correct Answer
verified

Which of the following consists of short, noncoding, guanine-rich DNA sequences that repeat many times?

Correct Answer
verified

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

The ends of eukaryotic chromosomes can be lengthened by

Correct Answer
verified

Which of the following nucleotide sequences represents the complement to the DNA strand, 5′-AGATCCG-3′?

Correct Answer
verified
E

Which of the following causes the unwinding of the DNA double helix?

Correct Answer
verified

Exam 12: DNA: The Carrier of Genetic Information

A nucleotide is made up of a phosphate group, a five-carbon sugar molecule, and

Correct AnswerverifiedC

Hydrogen bonds can form between guanine and ____, and between adenine and ____.

Correct AnswerverifiedC

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

In the experiments of Griffith, the conversion of nonlethal R-strain bacteria to lethal S-strain bacteria

Correct AnswerverifiedShow Answer

In replication, once the DNA strands have been separated, reformation of the double helix is prevented by

Correct AnswerverifiedShow Answer

X-ray diffraction images produced by ____ were used by Watson and Crick to infer the structure of DNA.

Correct AnswerverifiedShow Answer

Primase is the enzyme responsible for

Correct AnswerverifiedShow Answer

Enzymes called ____ form breaks in the DNA molecules to prevent the formation of knots in the DNA helix during replication.

Correct AnswerverifiedShow Answer

In the following questions, match the component of DNA replication with its function.

Which is a powerful method for determining the 3D structure of a molecule?

Correct AnswerverifiedShow Answer

Briefly explain the experiments of Avery and his colleagues and those of Hershey and Chase. What did those experiments support?

Correct AnswerverifiedConcepts to Consider: The experiments of...View AnswerShow Answer

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

From the DNA X-ray crystallography data, Franklin and Wilkins inferred that ____, while Watson and Crick determined that ____.

Correct AnswerverifiedShow Answer

How is a bacterial chromosome replicated?

Correct AnswerverifiedShow Answer

Which of the following consists of short, noncoding, guanine-rich DNA sequences that repeat many times?

Correct AnswerverifiedShow Answer

Match the scientist(s) with their corresponding revolutionary discovery or experiment.

The ends of eukaryotic chromosomes can be lengthened by

Correct AnswerverifiedShow Answer

Which of the following nucleotide sequences represents the complement to the DNA strand, 5′-AGATCCG-3′?

Correct AnswerverifiedE

Which of the following causes the unwinding of the DNA double helix?

Correct AnswerverifiedShow Answer

Correct Answer
verified
C

Hydrogen bonds can form between guanine and , and between adenine and .

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Concepts to Consider: The experiments of...
View Answer

From the DNA X-ray crystallography data, Franklin and Wilkins inferred that , while Watson and Crick determined that .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

Correct Answer
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