Question 1

The phosphodiester linkages in DNA and in RNA are, respectively:

Accepted Answer

A)  2' to 3', 3' to 2' 
B)  2' to 5', 5' to 2' 
C)  3' to 5', 5' to 3' 
D)  3' to 5', 3' to 5' 
E)  5' to 5', 3' to 3' 
A)  2' to 3', 3' to 2' 
B)  2' to 5', 5' to 2' 
C)  3' to 5', 5' to 3' 
D)  3' to 5', 3' to 5' 
E)  5' to 5', 3' to 3' D

Question 2

In some instances, base pairs other than the familiar G−C and A−T matches can form. For these alternate pairs to form, one of the two bases must tautomerize. Based on this information, draw a C−A pair and determine the number of hydrogen bonds that would stabilize the pair.

Accepted Answer

Two hydrogen bonds can form in a C−A pair.

Question 3

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once.
-RNA base sequence complementary to the DNA base sequence which codes for Leu−Ala−Phe:
CTAGCATTT

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 B

Question 4

Rank DNA, mRNA, and tRNA from largest to smallest.

Accepted Answer

A)  DNA > mRNA > tRNA 
B)  DNA > tRNA > mRNA 
C)  mRNA > tRNA > DNA 
D)  mRNA > DNA > tRNA 
E)  tRNA > mRNA > DNA 
A)  DNA > mRNA > tRNA 
B)  DNA > tRNA > mRNA 
C)  mRNA > tRNA > DNA 
D)  mRNA > DNA > tRNA 
E)  tRNA > mRNA > DNA

Question 5

What sequence is fully complementary to the following sequence? (5') ATCTAGTCA (3')

Accepted Answer

A)  (5') TAGATCAGT (3') 
B)  (5') TGACTAGAT (3') 
C)  (5') ATCTAGTCA (3') 
D)  (5') ACTGATCTA (3') 
A)  (5') TAGATCAGT (3') 
B)  (5') TGACTAGAT (3') 
C)  (5') ATCTAGTCA (3') 
D)  (5') ACTGATCTA (3')

Question 6

What amino acid sequence is coded by the following segment of DNA?
(5') TTA−GCC−GTA−CTA−AAA (3')

Accepted Answer

Asn−Arg−Hi

Question 7

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once.
-process by which mRNA is synthesized

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

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once.
-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 9

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once.
-a purine nucleotide

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 10

Which of the following represents the general sequence of events in the catabolism of nucleic acids?

Accepted Answer

A)  hydrolysis, dephosphorylation, cleavage of the sugar 
B)  cleavage of the sugar, dephosphorylation, hydrolysis 
C)  dephosphorylation, hydrolysis, cleavage of the sugar 
D)  hydrolysis, cleavage of the sugar, dephosphorylation 
E)  dephosphorylation, cleavage of the sugar, hydrolysis 
A)  hydrolysis, dephosphorylation, cleavage of the sugar 
B)  cleavage of the sugar, dephosphorylation, hydrolysis 
C)  dephosphorylation, hydrolysis, cleavage of the sugar 
D)  hydrolysis, cleavage of the sugar, dephosphorylation 
E)  dephosphorylation, cleavage of the sugar, hydrolysis

Question 11

Which of the following is deoxyadenosine? A   B   C   D   ​

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 12

Which of the following is 2-deoxy-D-ribose? A   B   C   D   ​

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
A)  A 
B)  B 
C)  C 
D)  D

Question 13

How many hydrogen bonds are present in a G−C base pair and an A−T base pair, respectively?

Accepted Answer

A)  1, 2 
B)  2, 2 
C)  2, 3 
D)  3, 2 
E)  3, 3 
A)  1, 2 
B)  2, 2 
C)  2, 3 
D)  3, 2 
E)  3, 3

Question 14

Consider the following structure.   a)Circle any nucleoside.
b)Draw a box around any nucleotide.
c)
Identify as DNA or RNA.

Accepted Answer

The answer of Consider the following structure.   a)Circle...

Question 15

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once.
-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 16

Consider the RNA dinucleotide GU.
a)Draw the full structure of the RNA dinucleotide GU and label the 3' and 5' ends.
b)How would this dinucleotide differ if found in DNA?

Accepted Answer

a) @#IMG-DLM& b)The ribose sug

Question 17

Which of the following is a definition of messenger RNA (mRNA)?

Accepted Answer

A)  RNA found in the ribosome, the site in cells where synthesis of proteins takes place 
B)  RNA which carries a specific amino acid to the site of protein synthesis 
C)  RNA which has coded genetic information 
D)  RNA which signals cell death 
A)  RNA found in the ribosome, the site in cells where synthesis of proteins takes place 
B)  RNA which carries a specific amino acid to the site of protein synthesis 
C)  RNA which has coded genetic information 
D)  RNA which signals cell death

Question 18

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once.
-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 19

A double-stranded DNA molecule that contains 22%, on a mole basis, T must also contain

Accepted Answer

A)  11% G 
B)  22% G 
C)  28% G 
D)  56% G 
E)  78% G 
A)  11% G 
B)  22% G 
C)  28% G 
D)  56% G 
E)  78% G

Question 20

Which of the following characterizes the polymerase chain reaction (PCR)?

Accepted Answer

A)  produces multiple copies of DNA segments 
B)  requires small amount of the source DNA 
C)  the key to the process is a thermally stable enzyme 
D)  involves temperature cycling 
E)  all of these 
A)  produces multiple copies of DNA segments 
B)  requires small amount of the source DNA 
C)  the key to the process is a thermally stable enzyme 
D)  involves temperature cycling 
E)  all of these

Exam 24: Biomolecules: Nucleic Acids and Their Metabolism

The phosphodiester linkages in DNA and in RNA are, respectively:

In some instances, base pairs other than the familiar G−C and A−T matches can form. For these alternate pairs to form, one of the two bases must tautomerize. Based on this information, draw a C−A pair and determine the number of hydrogen bonds that would stabilize the pair.

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. -RNA base sequence complementary to the DNA base sequence which codes for Leu−Ala−Phe: CTAGCATTT

Rank DNA, mRNA, and tRNA from largest to smallest.

What sequence is fully complementary to the following sequence? (5') ATCTAGTCA (3')

What amino acid sequence is coded by the following segment of DNA? (5') TTA−GCC−GTA−CTA−AAA (3')

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. -process by which mRNA is synthesized

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. -a pyrimidine nucleoside

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. -a purine nucleotide

Which of the following represents the general sequence of events in the catabolism of nucleic acids?

Which of the following is deoxyadenosine? A B C D ​

Which of the following is 2-deoxy-D-ribose? A B C D ​

How many hydrogen bonds are present in a G−C base pair and an A−T base pair, respectively?

Consider the following structure. a)Circle any nucleoside. b)Draw a box around any nucleotide. c) Identify as DNA or RNA.

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. -uridine

Consider the RNA dinucleotide GU. a)Draw the full structure of the RNA dinucleotide GU and label the 3' and 5' ends. b)How would this dinucleotide differ if found in DNA?

Which of the following is a definition of messenger RNA (mRNA)?

Match each of the following terms to a structure from the list below. There is only one correct structure for each term and structures may be used more than once. -DNA sequencing method for the human genome

A double-stranded DNA molecule that contains 22%, on a mole basis, T must also contain

Which of the following characterizes the polymerase chain reaction (PCR)?

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

Alkenes and Alkynes

Reactions of Alkenes and Alkynes

Aromatic Compounds

Structure Determination: Mass Spectrometry, Infrared Spectroscopy, and Ultraviolet Spectroscopy

Structure Determination: Mass Spectrometry, Infrared Spectroscopy, and Ultraviolet Spectroscopy

Structure Determination: Nuclear Magnetic Resonance Spectroscopy

Organohalides: Nucleophilic Substitutions and Eliminations

Alcohols, Phenols, and Thiols; Ethers and Sulfides

Aldehydes and Ketones: Nucleophilic Addition Reactions

Carboxylic Acids and Nitriles

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Carbonyl Alpha-Substitution and Condensation Reactions

Amines and Heterocycles

Biomolecules: Amino Acids, Peptides, and Proteins

Amino Acid Metabolism

Biomolecules: Carbohydrates

Carbohydrate Metabolism

Biomolecules: Lipids and Their Metabolism

Orbitals and Organic Chemistry: Pericyclic Reactionse

Synthetic Polymerse

Filters

Which of the following is deoxyadenosine? A B C D

Which of the following is 2-deoxy-D-ribose? A B C D