Question 1

The codon consists of

Accepted Answer

A)  A sequence of three bases 
B)  A sequence of three amino acids 
C)  A sequence of three purines 
D)  A sequence of three pyrimidines 
E)  None of these 
A)  A sequence of three bases 
B)  A sequence of three amino acids 
C)  A sequence of three purines 
D)  A sequence of three pyrimidines 
E)  None of these

Question 2

In RNA,adenine can be linked to _________ .

Accepted Answer

A)  Deoxyribose via $\beta$-N-glycosidic bonds 
B)  Uracil via hydrogen bonds 
C)  Phosphate via phosphodiester bonds 
D)  Guanine via amide bonds 
E)  All of the above 
A)  Deoxyribose via $\beta$-N-glycosidic bonds 
B)  Uracil via hydrogen bonds 
C)  Phosphate via phosphodiester bonds 
D)  Guanine via amide bonds 
E)  All of the above

Question 3

What is the transfer RNA anticodon for the messenger RNA codon,G-C-A?

Accepted Answer

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

Question 4

The following structure represents the less common (in DNA,at least)tautomeric form of __________.

Accepted Answer

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

Question 5

In a nucleotide unit,the components are sequentially linked:

Accepted Answer

A)  monosaccharide--phosphate--heterocyclic base. 
B)  amino acid--monosaccharide--phosphate. 
C)  phosphate--monosaccharide--heterocyclic base. 
D)  monosaccharide--amino acid--phosphate. 
E)  heterocyclic base--phosphate--monosaccharide. 
A)  monosaccharide--phosphate--heterocyclic base. 
B)  amino acid--monosaccharide--phosphate. 
C)  phosphate--monosaccharide--heterocyclic base. 
D)  monosaccharide--amino acid--phosphate. 
E)  heterocyclic base--phosphate--monosaccharide.

Question 6

Draw structures to represent the hydrogen bonding between cytosine and guanine.

Accepted Answer

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

Question 7

An RNA nucleoside will undergo hydrolysis in dilute acid to yield which of the following?

Accepted Answer

A)  2-Deoxy-D-ribose and a heterocyclic base 
B)  2-Deoxy-D-ribose,a heterocyclic base,and phosphate ion 
C)  D-Ribose and a heterocyclic base 
D)  D-Ribose,a heterocyclic base,and phosphate ion 
E)  D-Ribose and phosphate ion 
A)  2-Deoxy-D-ribose and a heterocyclic base 
B)  2-Deoxy-D-ribose,a heterocyclic base,and phosphate ion 
C)  D-Ribose and a heterocyclic base 
D)  D-Ribose,a heterocyclic base,and phosphate ion 
E)  D-Ribose and phosphate ion

Question 8

The anticodon is a specific sequence of ____________,found on the ___________,which allows it to bind to the ____________,of _____________.

Accepted Answer

three base

Question 9

Which of these has the smallest molecular weight?

Accepted Answer

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

Question 10

Protein synthesis requires that two major processes take place.The first takes place in the cytoplasm involving messenger RNA (mRNA)and is called ___________.The second involves two other types of RNA: __________ and ____________.

Accepted Answer

transcription;riboso

Question 11

What is the meaning of the following abbreviations: UMP and AMP?

Accepted Answer

The answer of What is the meaning of the following...

Question 12

Which are the products of hydrolysis of a RNA nucleotide?

Accepted Answer

A)  D-Ribose,adenine 
B)  D-Ribose,guanine,phosphate 
C)  D-Ribose,thymine,phosphate 
D)  2-Deoxy-D-ribose,cytosine,phosphate 
E)  2-Deoxy-D-ribose,adenine 
A)  D-Ribose,adenine 
B)  D-Ribose,guanine,phosphate 
C)  D-Ribose,thymine,phosphate 
D)  2-Deoxy-D-ribose,cytosine,phosphate 
E)  2-Deoxy-D-ribose,adenine

Question 13

In DNA,the lactim form of guanine will pair with which base?

Accepted Answer

A)  Cytosine 
B)  Adenine 
C)  Uracil 
D)  Thymine 
E)  No pairing is possible. 
A)  Cytosine 
B)  Adenine 
C)  Uracil 
D)  Thymine 
E)  No pairing is possible.

Question 14

Draw the structures to represent what is likely to happen when cyclic AMP (3',5'-cyclic adenylic acid)reacts with aqueous sodium hydroxide,briefly explaining your rationale.

Accepted Answer

@#IMG-DLM& The reaction appears to follow an S<sub

Question 15

Suggest a reasonable strategy for the specific phosphorylation of the 5' -OH group of a nucleoside.

Accepted Answer

In order for phosphorylation t

Question 16

The monomeric units of nucleic acids are which of these?

Accepted Answer

A)  D-ribose or 2-deoxy-D-ribose 
B)  Phosphate ions 
C)  Purines 
D)  Nucleosides 
E)  Nucleotides 
A)  D-ribose or 2-deoxy-D-ribose 
B)  Phosphate ions 
C)  Purines 
D)  Nucleosides 
E)  Nucleotides

Question 17

The anticodon is part of

Accepted Answer

A)  mRNA 
B)  rRNA 
C)  tRNA 
D)  DNA 
E)  None of these 
A)  mRNA 
B)  rRNA 
C)  tRNA 
D)  DNA 
E)  None of these

Question 18

In DNA,adenine can be linked to _________ .

Accepted Answer

A)  Deoxyribose via $\beta$-N-glycosidic bonds 
B)  Uracil via hydrogen bonds 
C)  Phosphate via phosphodiester bonds 
D)  Guanine via amide bonds 
E)  All of the above 
A)  Deoxyribose via $\beta$-N-glycosidic bonds 
B)  Uracil via hydrogen bonds 
C)  Phosphate via phosphodiester bonds 
D)  Guanine via amide bonds 
E)  All of the above

Question 19

The function of tRNA is ___________.

Accepted Answer

to transport amino a

Question 20

Which is the messenger codon which calls for the initiation of protein synthesis?

Accepted Answer

A)  AUG 
B)  GUA 
C)  UAG 
D)  AUC 
E)  CAC 
A)  AUG 
B)  GUA 
C)  UAG 
D)  AUC 
E)  CAC

Exam 25: Nucleic Acids and Protein Synthesis

The codon consists of

In RNA,adenine can be linked to _________ .

What is the transfer RNA anticodon for the messenger RNA codon,G-C-A?

The following structure represents the less common (in DNA,at least)tautomeric form of __________.

In a nucleotide unit,the components are sequentially linked:

Draw structures to represent the hydrogen bonding between cytosine and guanine.

An RNA nucleoside will undergo hydrolysis in dilute acid to yield which of the following?

The anticodon is a specific sequence of ____________,found on the ___________,which allows it to bind to the ____________,of _____________.

Which of these has the smallest molecular weight?

Protein synthesis requires that two major processes take place.The first takes place in the cytoplasm involving messenger RNA (mRNA)and is called ___________.The second involves two other types of RNA: __________ and ____________.

What is the meaning of the following abbreviations: UMP and AMP?

Which are the products of hydrolysis of a RNA nucleotide?

In DNA,the lactim form of guanine will pair with which base?

Draw the structures to represent what is likely to happen when cyclic AMP (3',5'-cyclic adenylic acid)reacts with aqueous sodium hydroxide,briefly explaining your rationale.

Suggest a reasonable strategy for the specific phosphorylation of the 5' -OH group of a nucleoside.

The monomeric units of nucleic acids are which of these?

The anticodon is part of

In DNA,adenine can be linked to _________ .

The function of tRNA is ___________.

Which is the messenger codon which calls for the initiation of protein synthesis?

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 anticodon is a specific sequence of ______,found on the _,which allows it to bind to the ,of _____.

Protein synthesis requires that two major processes take place.The first takes place in the cytoplasm involving messenger RNA (mRNA)and is called _.The second involves two other types of RNA: and ____.