Question 1

To which of the following do amino acids bind during protein synthesis?

Accepted Answer

A)  DNA 
B)  tRNA 
C)  rRNA 
D)  mRNA 
A)  DNA 
B)  tRNA 
C)  rRNA 
D)  mRNA B

Question 2

With recombinant DNA work,a type of DNA has been used as a means of introducing a new gene into bacteria.Shown below,this type of DNA is referred to as a(n)_____.

Accepted Answer

A)  plasmid 
B)  vector 
C)  DNA polymerase 
D)  intron 
A)  plasmid 
B)  vector 
C)  DNA polymerase 
D)  intron A

Question 3

DNA fingerprinting has become an important tool during the investigation of a crime scene.Which of the following processes is not considered a portion of DNA fingerprinting?

Accepted Answer

A)  gel electrophoresis 
B)  PCR amplification 
C)  reverse transcription 
D)  radioactivity detection 
A)  gel electrophoresis 
B)  PCR amplification 
C)  reverse transcription 
D)  radioactivity detection C

Question 4

The following is the sugar found in DNA.

Accepted Answer

A) True 
 B)False

Question 5

The DNA molecule is significantly smaller than the RNA molecule.

Accepted Answer

A) True 
 B)False

Question 6

Two bases in adjacent strands of DNA form two hydrogen bonds.These two bases would be

Accepted Answer

A)  G and C. 
B)  A and T. 
C)  A and U. 
D)  C and T. 
A)  G and C. 
B)  A and T. 
C)  A and U. 
D)  C and T.

Question 7

The DNA molecule contains complementary nitrogen bases.There are four bases,but they pair as A-T and G-C with no cross pairing.How is this accomplished?

Accepted Answer

A)  A and G are polar leaning heavily to the positive.T and C are negative.A-G and T-C repel each other and cannot pair. 
B)  A and G do not have their polar sites in the appropriate location to pair,and the same is true of T and C. 
C)  A and T have two matching but opposite polar sites.G and C have 3 polar sites.The two poles will not attract and maintain attraction for three poles. 
D)  There is more than one correct response. 
A)  A and G are polar leaning heavily to the positive.T and C are negative.A-G and T-C repel each other and cannot pair. 
B)  A and G do not have their polar sites in the appropriate location to pair,and the same is true of T and C. 
C)  A and T have two matching but opposite polar sites.G and C have 3 polar sites.The two poles will not attract and maintain attraction for three poles. 
D)  There is more than one correct response.

Question 8

Which nucleic acid contains the anticodon?

Accepted Answer

A)  DNA 
B)  rRNA 
C)  tRNA 
D)  mRNA 
A)  DNA 
B)  rRNA 
C)  tRNA 
D)  mRNA

Question 9

DNA segments in eukaryotic cells which carry information for protein synthesis are called _____ .

Accepted Answer

A)  introns 
B)  exons 
C)  heterogeneous DNA 
D)  heterogeneous nuclear DNA 
A)  introns 
B)  exons 
C)  heterogeneous DNA 
D)  heterogeneous nuclear DNA

Question 10

Which of the following bases is found only in DNA?

Accepted Answer

A)  thymine 
B)  uracil 
C)  cytosine 
D)  guanine 
A)  thymine 
B)  uracil 
C)  cytosine 
D)  guanine

Question 11

During transcription,the base adenine in DNA pairs with the base ____ in the new mRNA.

Accepted Answer

A)  guanine 
B)  thymine 
C)  cytosine 
D)  uracil 
A)  guanine 
B)  thymine 
C)  cytosine 
D)  uracil

Question 12

The tRNA anticodon and amino acid that correspond to the mRNA codon GUC are CAG and alanine,respectively.

Accepted Answer

A) True 
 B)False

Question 13

The chain initiation codon is _____ .

Accepted Answer

A)  AUU 
B)  CUC 
C)  AUG 
D)  UUU 
A)  AUU 
B)  CUC 
C)  AUG 
D)  UUU

Question 14

A complementary strand (written in the 5'-3' order)for the DNA segment AGC is _____ .

Accepted Answer

A)  GCT 
B)  TCG 
C)  AGC 
D)  none 
A)  GCT 
B)  TCG 
C)  AGC 
D)  none

Question 15

Chemicals which cause mutations are called _____ .

Accepted Answer

A)  mutagens 
B)  mutations 
C)  genetic inhibitors 
D)  genetic modifiers 
A)  mutagens 
B)  mutations 
C)  genetic inhibitors 
D)  genetic modifiers

Question 16

DNA replication by DNA polymerase occurs in the ____ direction on the template strand.

Accepted Answer

A)  5'$\rarr$3' 
B)  3'$\rarr$5' 
C)  both ways 
D)  none of these 
A)  5'$\rarr$3' 
B)  3'$\rarr$5' 
C)  both ways 
D)  none of these

Question 17

What symptoms should an individual that has been stung by an insect exhibit that indicate anaphylactic shock?

Accepted Answer

A)  the area about the sting becoming red and a tightening of the skin 
B)  shortness of breath and swelling in the throat 
C)  coughing,headache,and nausea 
D)  All of these responses are symptoms of anaphylactic shock. 
A)  the area about the sting becoming red and a tightening of the skin 
B)  shortness of breath and swelling in the throat 
C)  coughing,headache,and nausea 
D)  All of these responses are symptoms of anaphylactic shock.

Question 18

Movement of a ribosome along a mRNA is termed _____ .

Accepted Answer

A)  translocation 
B)  lateration 
C)  elongation 
D)  translation 
A)  translocation 
B)  lateration 
C)  elongation 
D)  translation

Question 19

Insulin produced by bacteria through genetic engineering is chemically identical to human insulin.

Accepted Answer

A) True 
 B)False

Question 20

A form of RNA carries information from the DNA in the nucleus to the appropriate site where proteins are synthesized.Why is it necessary to have an intermediate in the form of RNA?

Accepted Answer

A)  Proteins cannot be synthesized properly from DNA because the process calls for an additional step in the form of an RNA molecule because of the chemistry of synthesis. 
B)  DNA is a large enough molecule that it can not leave the nucleus to move through the cytoplasm of the cell. 
C)  The code carried in the DNA molecule is too large and must be broken down in to manageable pieces.RNA carries those pieces which are severed from the parent DNA molecule. 
D)  The genetic code for proteins is inherited from one's parents in the form of the RNA molecule which moves throughout the cytoplasm. 
A)  Proteins cannot be synthesized properly from DNA because the process calls for an additional step in the form of an RNA molecule because of the chemistry of synthesis. 
B)  DNA is a large enough molecule that it can not leave the nucleus to move through the cytoplasm of the cell. 
C)  The code carried in the DNA molecule is too large and must be broken down in to manageable pieces.RNA carries those pieces which are severed from the parent DNA molecule. 
D)  The genetic code for proteins is inherited from one's parents in the form of the RNA molecule which moves throughout the cytoplasm.

Exam 21: Nucleic Acids and Protein Synthesis

To which of the following do amino acids bind during protein synthesis?

With recombinant DNA work,a type of DNA has been used as a means of introducing a new gene into bacteria.Shown below,this type of DNA is referred to as a(n)_____.

DNA fingerprinting has become an important tool during the investigation of a crime scene.Which of the following processes is not considered a portion of DNA fingerprinting?

The following is the sugar found in DNA.

The DNA molecule is significantly smaller than the RNA molecule.

Two bases in adjacent strands of DNA form two hydrogen bonds.These two bases would be

The DNA molecule contains complementary nitrogen bases.There are four bases,but they pair as A-T and G-C with no cross pairing.How is this accomplished?

Which nucleic acid contains the anticodon?

DNA segments in eukaryotic cells which carry information for protein synthesis are called _____ .

Which of the following bases is found only in DNA?

During transcription,the base adenine in DNA pairs with the base ____ in the new mRNA.

The tRNA anticodon and amino acid that correspond to the mRNA codon GUC are CAG and alanine,respectively.

The chain initiation codon is _____ .

A complementary strand (written in the 5'-3' order)for the DNA segment AGC is _____ .

Chemicals which cause mutations are called _____ .

DNA replication by DNA polymerase occurs in the ____ direction on the template strand.

What symptoms should an individual that has been stung by an insect exhibit that indicate anaphylactic shock?

Movement of a ribosome along a mRNA is termed _____ .

Insulin produced by bacteria through genetic engineering is chemically identical to human insulin.

A form of RNA carries information from the DNA in the nucleus to the appropriate site where proteins are synthesized.Why is it necessary to have an intermediate in the form of RNA?

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