Question 1

Scientists have created genetically modified organisms (GMOs) by isolating and then transferring the jellyfish gene for green fluorescent protein into pigs,bacteria,plants,and mice.The result was bioluminescent organisms! These experiments demonstrate that

Accepted Answer

A)  jellyfish genes may be transferred into other aquatic ectotherms,but not mammals.
B)  genes have no difficulty crossing the species barrier.
C)  animal genes from one species will not function if transferred into other animals.
D)  genes can only be transferred to other organisms within the same species.E) All of the above
F) B) and C)

Question 2

In order to help firmly establish DNA as the genetic material,Hershey and Chase performed an experiment using viruses and mice.

Accepted Answer

A) True 
 B)False

Question 3

Nucleotides contain all of the following except

Accepted Answer

A)  a phosphate group.
B)  a 5-carbon sugar.
C)  a nitrogen base.
D)  histones.E) A) and D)
F) None of the above

Question 4

Approximately how many base pairs are still improperly matched in the bacterial genome after the DNA polymerase proofreads the DNA strand?

Accepted Answer

A)  1 in 10,000
B)  1 in 100,000
C)  1 in 1,000,000
D)  1 in 100,000,000
E)  1 in a billionF) A) and B)
G) All of the above

Question 5

During the replication of DNA,DNA polymerase has to synthesize the daughter strand in the 5' to 3' direction because DNA polymerase can only join nucleotides to the 3' end of the growing new strand.

Accepted Answer

A) True 
 B)False

Question 6

Before Watson and Crick described DNA structure,Linus Pauling proposed a possible model with three strands of support running down the middle and the bases extending out the sides.How did Pauling's model differ from Watson and Crick's?

Accepted Answer

A)  Pauling proposed three support strands while Watson and Crick proposed two strands.
B)  Pauling proposed the support strands ran down the middle of the molecule while Watson and Crick proposed the support strands ran down the sides.
C)  Pauling proposed that the bases stick out the sides of the molecule while Watson and Crick proposed the bases were paired in the middle.
D)  All of the choices describe how Pauling's model was different than Watson and Crick's model.E) A) and B)
F) All of the above

Question 7

All of the following are associated with translation EXCEPT

Accepted Answer

A)  Growth of a polypeptide chain.
B)  Attachment of a ribosome to mRNA.
C)  Binding of two tRNA molecules per ribosome.
D)  Liberation of polypeptide from the ribosome.
E)  Production of mRNA.F) D) and E)
G) A) and C)

Question 8

In the Watson and Crick model of DNA,the "steps" of the ladder are composed of

Accepted Answer

A)  sugars.
B)  a purine and a pyrimidine.
C)  two purines.
D)  two pyrimidines.
E)  a sugar and a phosphate molecule.F) B) and C)
G) A) and E)

Question 9

Transcription of a DNA molecule with a nucleotide sequence of AAA-CAA-CTT results in an mRNA molecule with the complementary sequence of

Accepted Answer

A)  GGG-AGA-ACC.
B)  UUU-CUU-CAA.
C)  UUU-GUU-GAA.
D)  TTT-GAA-GCC.
E)  CCC-ACC-TCC.F) C) and D)
G) C) and E)

Question 10

DNA was shown to be the transforming substance when only the ________ enzymes could inhibit transformation.

Accepted Answer

A)  proteinase
B)  RNAase
C)  DNAase
D)  lipaseE) A) and D)
F) None of the above

Question 11

The correct sequence of events in translation is

Accepted Answer

A)  initiation,termination,elongation.
B)  elongation,termination,initiation.
C)  termination,elongation,initiation.
D)  elongation,initiation,termination.
E)  initiation,elongation,termination.F) B) and E)
G) B) and C)

Question 12

The first codon to be deciphered was ________,which codes for ________.

Accepted Answer

A)  AAA; proline
B)  GGG; alanine
C)  UUU; phenylalanine
D)  TTT; arginine
E)  CCC; glycineF) None of the above
G) C) and D)

Question 13

A(n) ________ is a group of three bases on tRNA that is complementary to a specific mRNA codon.

Accepted Answer

A)  codon
B)  anticodon
C)  poly-A tail
D)  capE) B) and D)
F) C) and D)

Exam 12: Molecular Biology of the Gene

DNA was shown to be the transforming substance when only the ________ enzymes could inhibit transformation.

Correct Answer
verified

The first codon to be deciphered was ,which codes for .

Correct Answer
verified

In order to help firmly establish DNA as the genetic material,Hershey and Chase performed an experiment using viruses and mice.

Correct Answer
verified

During the replication of DNA,DNA polymerase has to synthesize the daughter strand in the 5' to 3' direction because DNA polymerase can only join nucleotides to the 3' end of the growing new strand.

Correct Answer
verified

In the Watson and Crick model of DNA,the "steps" of the ladder are composed of

Correct Answer
verified

Transcription of a DNA molecule with a nucleotide sequence of AAA-CAA-CTT results in an mRNA molecule with the complementary sequence of

Correct Answer
verified

Before Watson and Crick described DNA structure,Linus Pauling proposed a possible model with three strands of support running down the middle and the bases extending out the sides.How did Pauling's model differ from Watson and Crick's?

Correct Answer
verified

Nucleotides contain all of the following except

Correct Answer
verified

A(n) ________ is a group of three bases on tRNA that is complementary to a specific mRNA codon.

Correct Answer
verified

Approximately how many base pairs are still improperly matched in the bacterial genome after the DNA polymerase proofreads the DNA strand?

Correct Answer
verified

The correct sequence of events in translation is

Correct Answer
verified

Scientists have created genetically modified organisms (GMOs) by isolating and then transferring the jellyfish gene for green fluorescent protein into pigs,bacteria,plants,and mice.The result was bioluminescent organisms! These experiments demonstrate that

Correct Answer
verified

All of the following are associated with translation EXCEPT

Correct Answer
verified

Exam 12: Molecular Biology of the Gene

DNA was shown to be the transforming substance when only the ________ enzymes could inhibit transformation.

Correct AnswerverifiedShow Answer

The first codon to be deciphered was ________,which codes for ________.

Correct AnswerverifiedShow Answer

In order to help firmly establish DNA as the genetic material,Hershey and Chase performed an experiment using viruses and mice.

Correct AnswerverifiedShow Answer

During the replication of DNA,DNA polymerase has to synthesize the daughter strand in the 5' to 3' direction because DNA polymerase can only join nucleotides to the 3' end of the growing new strand.

Correct AnswerverifiedShow Answer

In the Watson and Crick model of DNA,the "steps" of the ladder are composed of

Correct AnswerverifiedShow Answer

Transcription of a DNA molecule with a nucleotide sequence of AAA-CAA-CTT results in an mRNA molecule with the complementary sequence of

Correct AnswerverifiedShow Answer

Before Watson and Crick described DNA structure,Linus Pauling proposed a possible model with three strands of support running down the middle and the bases extending out the sides.How did Pauling's model differ from Watson and Crick's?

Correct AnswerverifiedShow Answer

Nucleotides contain all of the following except

Correct AnswerverifiedShow Answer

A(n) ________ is a group of three bases on tRNA that is complementary to a specific mRNA codon.

Correct AnswerverifiedShow Answer

Approximately how many base pairs are still improperly matched in the bacterial genome after the DNA polymerase proofreads the DNA strand?

Correct AnswerverifiedShow Answer

The correct sequence of events in translation is

Correct AnswerverifiedShow Answer

Scientists have created genetically modified organisms (GMOs) by isolating and then transferring the jellyfish gene for green fluorescent protein into pigs,bacteria,plants,and mice.The result was bioluminescent organisms! These experiments demonstrate that

Correct AnswerverifiedShow Answer

All of the following are associated with translation EXCEPT

Correct AnswerverifiedShow Answer

Correct Answer
verified

The first codon to be deciphered was ,which codes for .

Correct Answer
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