Question 1

When the β-cyanoethyl group is removed during DNA synthesis,H2CCHCN is produced as a product.This reaction is likely to be:

Accepted Answer

A) E1 
B) E2 
C) E1cB 
D) SN1 
E) SN2 
A) E1 
B) E2 
C) E1cB 
D) SN1 
E) SN2

Question 2

Using the PCR method for synthesizing DNA,why don't the two DNA strands recombine during the cooling phase?

Accepted Answer

A) The temperature used 
B) The concentration of the primers 
C) Presence of Mg2+ 
D) Presence of Taq polymerase 
A) The temperature used 
B) The concentration of the primers 
C) Presence of Mg2+ 
D) Presence of Taq polymerase

Question 3

Give a one sentence definition of translation.

Accepted Answer

Translation is the p

Question 4

Because of the structure of the RNA sugar-phosphate backbone,RNA is subject to base-promoted hydrolysis,as shown below.Suggest a mechanism for base-promoted RNA hydrolysis.

Accepted Answer

The answer of Because of the structure of the RNA...

Question 5

In determining DNA sequencing using the Sanger dideoxy method,how many colors will appear in the resulting data display?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
A) 2 
B) 4 
C) 6 
D) 8

Question 6

_____ DNA sequencing method for the human genome

Accepted Answer

A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M)AGATCGCTC 
A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M)AGATCGCTC

Question 7

_____ a pyrimidine nucleoside

Accepted Answer

A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M) AGATCGCTC 
A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M) AGATCGCTC

Question 8

Consider the following molecular model.Atoms other than carbon and hydrogen are labeled.   Which of the following is a characteristic of this structure?

Accepted Answer

A) Nucleoside 
B) Contains ribose 
C) Contains a purine base 
D) Found only in DNA 
A) Nucleoside 
B) Contains ribose 
C) Contains a purine base 
D) Found only in DNA

Question 9

Give a one sentence definition of transcription.

Accepted Answer

Transcription is the process b

Question 10

During DNA synthesis,how is the 5' -OH of deoxyribose protected?

Accepted Answer

A) With a p-dimethoxytrityl group 
B) With a benzoyl group 
C) With an isobutryl group 
D) With a β-cyanoethyl group 
E) This group does not need to be protected. 
A) With a p-dimethoxytrityl group 
B) With a benzoyl group 
C) With an isobutryl group 
D) With a β-cyanoethyl group 
E) This group does not need to be protected.

Question 11

_____ uridine

Accepted Answer

A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M)AGATCGCTC 
A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M)AGATCGCTC

Question 12

Consider the following diagram.   Which letter should be filled in on the bottom line?

Accepted Answer

A) GCU 
B) UCG 
C) GCT 
D) TGC 
A) GCU 
B) UCG 
C) GCT 
D) TGC

Question 13

Consider the following diagram.   What amino acid corresponds to the second codon from the left?

Accepted Answer

A) Tyrosine 
B) Asparagine 
C) Isoleucine 
D) None,the mRNA codon is a stop signal 
A) Tyrosine 
B) Asparagine 
C) Isoleucine 
D) None,the mRNA codon is a stop signal

Question 14

When DNA is replicated,the new chain is synthesized in what direction?

Accepted Answer

As DNA is replicated

Question 15

Which of the following statement correctly describes DNA replication?

Accepted Answer

A) Replication occurs in the   direction. 
B) Ligases link the Okazaki fragments to form the lagging strand. 
C) The leading strand is replicated discontinuously. 
D) One strand is replicated   while the other strand is replicated
  . 
A) Replication occurs in the   direction. 
B) Ligases link the Okazaki fragments to form the lagging strand. 
C) The leading strand is replicated discontinuously. 
D) One strand is replicated   while the other strand is replicated
  .

Question 16

_____ process by which mRNA directs protein synthesis

Accepted Answer

A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M)AGATCGCTC 
A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
 L)  M)AGATCGCTC

Question 17

Identify any errors in the figure shown below.

Accepted Answer

The answer of Identify any errors in the figure shown...

Question 18

Give the single letter amino acid sequence that is coded for by the following segment of DNA coding strand (sense strand)?
(5') GCA-TTT-CTA-ACT-TGA-GGG (3')

Accepted Answer

The mRNA strand is: (Rememberi

Question 19

Draw and label the four DNA nucleosides.

Accepted Answer

The answer of Draw and label the four DNA nucleosides....

Question 20

_____ a purine nucleoside

Accepted Answer

A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
L)  
M) AGATCGCTC 
A) Sanger dideoxy method 
B) GAUCGUAAA 
C) Watson-Crick 
D) translation 
E)  
F) 
G)transcription
H)Maxam-Gilbert method
I)AUGGCUGAG
J)replication
K) 
L)  
M) AGATCGCTC

Exam 28: Biomolecules: Nucleic Acids

When the β-cyanoethyl group is removed during DNA synthesis,H2CCHCN is produced as a product.This reaction is likely to be:

Using the PCR method for synthesizing DNA,why don't the two DNA strands recombine during the cooling phase?

Give a one sentence definition of translation.

Because of the structure of the RNA sugar-phosphate backbone,RNA is subject to base-promoted hydrolysis,as shown below.Suggest a mechanism for base-promoted RNA hydrolysis.

In determining DNA sequencing using the Sanger dideoxy method,how many colors will appear in the resulting data display?

_____ DNA sequencing method for the human genome

_____ a pyrimidine nucleoside

Consider the following molecular model.Atoms other than carbon and hydrogen are labeled. Which of the following is a characteristic of this structure?

Give a one sentence definition of transcription.

During DNA synthesis,how is the 5' -OH of deoxyribose protected?

_____ uridine

Consider the following diagram. Which letter should be filled in on the bottom line?

Consider the following diagram. What amino acid corresponds to the second codon from the left?

When DNA is replicated,the new chain is synthesized in what direction?

Which of the following statement correctly describes DNA replication?

_____ process by which mRNA directs protein synthesis

Identify any errors in the figure shown below.

Give the single letter amino acid sequence that is coded for by the following segment of DNA coding strand (sense strand)? (5') GCA-TTT-CTA-ACT-TGA-GGG (3')

Draw and label the four DNA nucleosides.

_____ a purine nucleoside

Structure and Bonding

Polar Covalent Bonds;acids and Bases

Organic Compounds: Alkanes and Their Stereochemistry

Organic Compounds: Cycloalkanes and Their Stereochemistry

Stereochemistry at Tetrahedral Centers

An Overview of Organic Reactions

Par 1

Alkenes: Structure and Reactivity

Alkenes: Reactions and Synthesis

Alkynes: an Introduction to Organic Synthesis

Organohalides

Reactions of Alkyl Halides: Nucleophilic Substitutions and Eliminations

Par 2

Structure Determination: Mass Spectrometry and Infrared Spectroscopy

Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Conjugated Compounds and Ultraviolet Spectroscopy

Par 3

Benzene and Aromaticity

Chemistry of Benzene: Electrophilic Aromatic Substitution

Alcohols and Phenols

Ethers and Epoxides;thiols and Sulfides

Aldehydes and Ketones: Nucleophilic Addition Reactions

Par 4

Carboxylic Acids and Nitriles

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution Reactions

Carbonyl Condensation Reactions

Par 5

Amines and Heterocycles

Biomolecules: Carbohydrates

Biomolecules: Amino Acids,peptides,and Proteins

Par 7

Biomolecules: Lipids

The Organic Chemistry of Metabolic Pathways

Orbitals and Organic Chemistry: Pericyclic Reactions

Synthetic Polymers

Par 1

Filters

When the β-cyanoethyl group is removed during DNA synthesis,H₂CCHCN is produced as a product.This reaction is likely to be: