Question 1

Which bases pair in DNA by hydrogen bonding?

Accepted Answer

A)  Cytosine and thymine 
B)  Cytosine and uracil 
C)  Adenine and guanine 
D)  Adenine and thymine 
E)  Adenine and uracil 
A)  Cytosine and thymine 
B)  Cytosine and uracil 
C)  Adenine and guanine 
D)  Adenine and thymine 
E)  Adenine and uracil

Question 2

Which of the following statements about the polymerase chain reaction are true?

Accepted Answer

A)  It generates a large number of copies of DNA 
B)  It polymerizes the short oligonucleotide strands formed during biosynthesis 
C)  It catalyzes the formation of mRNA 
D)  It needs a minuscule sample of DNA 
E)  Two of the above 
A)  It generates a large number of copies of DNA 
B)  It polymerizes the short oligonucleotide strands formed during biosynthesis 
C)  It catalyzes the formation of mRNA 
D)  It needs a minuscule sample of DNA 
E)  Two of the above

Question 3

The analytical data for DNA samples which led to generalizations such as (%G + %A)$\approx$ (%C + %T)came from the research of what individual?

Accepted Answer

A)  James Watson 
B)  Francis Crick 
C)  Edwin Chargaff 
D)  Arthur Kornberg 
E)  Maurice Wilkins 
A)  James Watson 
B)  Francis Crick 
C)  Edwin Chargaff 
D)  Arthur Kornberg 
E)  Maurice Wilkins

Question 4

Which is an incorrect statement concerning the DNA double helix?

Accepted Answer

A)  The sugar-phosphate backbone is on the inside of the helix and the base pairs are on the outside. 
B)  The two strands are identical but proceed in opposite directions. 
C)  The two strands are linked by glycosidic bonds. 
D)  Two of the above statements are incorrect. 
E)  All of the above statements are incorrect. 
A)  The sugar-phosphate backbone is on the inside of the helix and the base pairs are on the outside. 
B)  The two strands are identical but proceed in opposite directions. 
C)  The two strands are linked by glycosidic bonds. 
D)  Two of the above statements are incorrect. 
E)  All of the above statements are incorrect.

Question 5

Which is an incorrect statement concerning DNA structure?

Accepted Answer

A)  The base and the phosphate units are linked by phosphodiester bonds. 
B)  The sugar and the phosphate units are linked by hydrogen bonds. 
C)  The base and the sugar units are linked by $\beta$-N-glycosidic bonds. 
D)  Two of the above statements are incorrect. 
E)  All of the above statements are incorrect. 
A)  The base and the phosphate units are linked by phosphodiester bonds. 
B)  The sugar and the phosphate units are linked by hydrogen bonds. 
C)  The base and the sugar units are linked by $\beta$-N-glycosidic bonds. 
D)  Two of the above statements are incorrect. 
E)  All of the above statements are incorrect.

Question 6

Draw the structures of two tautomeric forms of guanine,one a lactam,the other a lactim.Explain the possible involvement of the lactim form in causing spontaneous mutation during replication.

Accepted Answer

The lactim form resembles adenine and mi

Question 7

Draw the structure with hydrogen bonds between Uracil and Adenine.

Accepted Answer

The answer of Draw the structure with hydrogen bonds between...

Question 8

In DNA,cytosine can pair via hydrogen bonding to _________?

Accepted Answer

A)  Deoxyribose 
B)  Uracil 
C)  Adenine 
D)  Guanine 
E)  All of the above 
A)  Deoxyribose 
B)  Uracil 
C)  Adenine 
D)  Guanine 
E)  All of the above

Question 9

Draw the structure of the dinucleotide DNA A-G.

Accepted Answer

The answer of Draw the structure of the dinucleotide DNA...

Question 10

Draw structures to represent the hydrogen bonding between adenine and thymine.

Accepted Answer

The answer of Draw structures to represent the hydrogen bonding...

Question 11

What is the secondary structure of DNA?

Accepted Answer

A)  An alpha-helix 
B)  A pleated sheet 
C)  A flat sheet 
D)  A double helix 
E)  A random coil 
A)  An alpha-helix 
B)  A pleated sheet 
C)  A flat sheet 
D)  A double helix 
E)  A random coil

Question 12

List anticodon sequences on the tRNA's carrying the amino acids: Ala,Phe,Leu,Tyr.

Accepted Answer

The answer of List anticodon sequences on the tRNA's carrying...

Question 13

Draw structures to represent the bonding between ribose and uracil.

Accepted Answer

The answer of Draw structures to represent the bonding between...

Question 14

If the base sequence along a segment of DNA were T-C-G-T-A,what would be the antisense oligonucleotide synthesized from this sequence?

Accepted Answer

A)  G-C-C-A-T 
B)  C-G-G-T-A 
C)  U-G-C-U-T 
D)  A-G-C-A-U 
E)  A-G-C-A-T 
A)  G-C-C-A-T 
B)  C-G-G-T-A 
C)  U-G-C-U-T 
D)  A-G-C-A-U 
E)  A-G-C-A-T

Question 15

Hydrolysis of DNA from various species gives which of the following results?

Accepted Answer

A)  The mole percentage of adenine is approximately equal to that of thymine. 
B)  The mole percentage of cytosine is approximately equal to that of guanine. 
C)  The total mole percentage of purines is approximately equal to that of pyrimidines. 
D)  All of the above 
E)  None of the above 
A)  The mole percentage of adenine is approximately equal to that of thymine. 
B)  The mole percentage of cytosine is approximately equal to that of guanine. 
C)  The total mole percentage of purines is approximately equal to that of pyrimidines. 
D)  All of the above 
E)  None of the above

Question 16

The molecular weight of tRNA is _________,compared with mRNA or rRNA;consequently,the solubility of tRNA is __________.

Accepted Answer

The answer of The molecular weight of tRNA is _________,compared...

Question 17

Which is a correct statement concerning DNA structure?

Accepted Answer

A)  The base and the phosphate units are linked by hydrogen bonds. 
B)  The sugar and the phosphate units are linked by phosphodiester bonds. 
C)  The base and the sugar units are linked by $\beta$-N-glycosidic bonds. 
D)  Two of the above statements are correct. 
E)  None of the above statements are correct. 
A)  The base and the phosphate units are linked by hydrogen bonds. 
B)  The sugar and the phosphate units are linked by phosphodiester bonds. 
C)  The base and the sugar units are linked by $\beta$-N-glycosidic bonds. 
D)  Two of the above statements are correct. 
E)  None of the above statements are correct.

Question 18

In DNA,thymine can pair via hydrogen bonding to _________?

Accepted Answer

A)  Cytosine 
B)  Uracil 
C)  Adenine 
D)  Guanine 
E)  Deoxyribose 
A)  Cytosine 
B)  Uracil 
C)  Adenine 
D)  Guanine 
E)  Deoxyribose

Question 19

During translation,the segment on the mRNA that corresponds to the base sequence C-G-A along a gene segment of DNA,would bind to the anticodon __________ on a tRNA.

Accepted Answer

A)  A-U-C 
B)  G-C-U 
C)  U-T-C 
D)  G-C-T 
E)  C-G-A 
A)  A-U-C 
B)  G-C-U 
C)  U-T-C 
D)  G-C-T 
E)  C-G-A

Question 20

Which of the following is not a pyrimidine?

Accepted Answer

A)  Cytosine 
B)  Thymine 
C)  Guanine 
D)  Uracil 
E)  All of the above are pyrimidines. 
A)  Cytosine 
B)  Thymine 
C)  Guanine 
D)  Uracil 
E)  All of the above are pyrimidines.

Exam 25: Nucleic Acids and Protein Synthesis

Which bases pair in DNA by hydrogen bonding?

Which of the following statements about the polymerase chain reaction are true?

The analytical data for DNA samples which led to generalizations such as (%G + %A) ≈\approx≈ (%C + %T)came from the research of what individual?

Which is an incorrect statement concerning the DNA double helix?

Which is an incorrect statement concerning DNA structure?

Draw the structures of two tautomeric forms of guanine,one a lactam,the other a lactim.Explain the possible involvement of the lactim form in causing spontaneous mutation during replication.

Draw the structure with hydrogen bonds between Uracil and Adenine.

In DNA,cytosine can pair via hydrogen bonding to _________?

Draw the structure of the dinucleotide DNA A-G.

Draw structures to represent the hydrogen bonding between adenine and thymine.

What is the secondary structure of DNA?

List anticodon sequences on the tRNA's carrying the amino acids: Ala,Phe,Leu,Tyr.

Draw structures to represent the bonding between ribose and uracil.

If the base sequence along a segment of DNA were T-C-G-T-A,what would be the antisense oligonucleotide synthesized from this sequence?

Hydrolysis of DNA from various species gives which of the following results?

The molecular weight of tRNA is _________,compared with mRNA or rRNA;consequently,the solubility of tRNA is __________.

Which is a correct statement concerning DNA structure?

In DNA,thymine can pair via hydrogen bonding to _________?

During translation,the segment on the mRNA that corresponds to the base sequence C-G-A along a gene segment of DNA,would bind to the anticodon __________ on a tRNA.

Which of the following is not a pyrimidine?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Alkenes and Alkynes Ii: Addition Reactions

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Filters

The analytical data for DNA samples which led to generalizations such as (%G + %A) $\approx$ (%C + %T)came from the research of what individual?

The molecular weight of tRNA is _,compared with mRNA or rRNA;consequently,the solubility of tRNA is __.