A) I, II, III, IV
B) I, II, IV
C) II, IV
D) III, IV
E) II, III
G) D) and E)
Correct Answer
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Correct Answer
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A) transcription, both eukaryotic and prokaryotic
B) translation, both eukaryotic and prokaryotic
C) replication, both eukaryotic and prokaryotic
D) transcription, prokaryotic only
E) replication, prokaryotic only
G) C) and D)
Correct Answer
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Correct Answer
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A) Most eukaryotic transcription factors contain a conserved DNA-binding basic region.
B) The basic regions typically bind in the major groove of its target DNA.
C) Eukaryotic transcription factors either contain an HTH motif or resemble the met repressor.
D) all of the above
E) none of the above
G) A) and C)
Correct Answer
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Correct Answer
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A) purine 1 & 2; pyrimidine 2 & 3
B) purine 2 & 3; pyrimidine 2
C) purine 8 & 9; pyrimidine 1 & 6
D) purine 6 & 7; pyrimidine 4 & 5
E) purine 6 & 7; pyrimidine 2
G) C) and D)
Correct Answer
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Correct Answer
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A) the glycosidic bond is in the syn conformation with a C3'-endo sugar pucker.
B) the glycosidic bond is in the syn conformation with a C2'-endo sugar pucker.
C) the glycosidic bond is in the anti conformation with a C3'-endo sugar pucker.
D) the glycosidic bond is in the anti conformation with a C2'-endo sugar pucker.
E) the glycosidic bond conformation and sugar pucker is dependent on the base.
G) B) and C)
Correct Answer
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Correct Answer
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A) type I
B) ribocatalyzers
C) C2'-endo
D) repressors
E) ethidium
F) type II
G) C3'-endo
H) hybridized
I) interchanged
J) supercoiled
K) cooperative
L) non-cooperative
M) underwound
N) ribozymes
O) deuterium
P) zinc finger
Q) leucine zipper
S) B) and H)
Correct Answer
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Correct Answer
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A) the size of a gene transcript
B) the abundance of a gene transcript
C) the tissue specificity of gene transcript
D) the stage-specificity of a gene transcript
E) all of the above
G) A) and D)
Correct Answer
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Correct Answer
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A) contains a catalytic core with a Fe2+ at its center.
B) utilizes hydrogen bonding to position itself favorably for nucleophilic attack.
C) enhances the rate of cleavage of itself by a factor of five.
D) A and C
E) B and C
G) A) and B)
Correct Answer
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Correct Answer
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A) about 2.5
B) about 25
C) about 250
D) about 2500
E) about 25000.
G) A) and B)
Correct Answer
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Correct Answer
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A) I, III, IV
B) II, IV
C) III, IV
D) I, III
E) I, IV
G) B) and D)
Correct Answer
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Correct Answer
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A) Zinc fingers contain Cys and His residues.
B) Zinc is tetrahedrally coordinated as part of a small compact protein domain.
C) More than one finger can be found in a protein; as many as 60 have been observed.
D) Zinc fingers are the predominant DNA-binding motif of restriction enzymes.
E) A zinc finger recognizes specific sequences of DNA via its N-terminal helices.
G) B) and D)
Correct Answer
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Correct Answer
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A) type I
B) ribocatalyzers
C) C2'-endo
D) repressors
E) ethidium
F) type II
G) C3'-endo
H) hybridized
I) interchanged
J) supercoiled
K) cooperative
L) non-cooperative
M) underwound
N) ribozymes
O) deuterium
P) zinc finger
Q) leucine zipper
S) C) and Q)
Correct Answer
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Correct Answer
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A) It may be double stranded in viral genomes.
B) It may form double stranded stems by binding its complementary bases within the same strand.
C) It always forms a single strand that resembles the structure of B-DNA.
D) It is only synthesized as a single strand.
E) It may be involved in the control of gene expression.
G) A) and E)
Correct Answer
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Correct Answer
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A) The lifetime of the material must be such that it can undergo repeated decoding.
B) The material must be accessible for replication, transcription, and translation.
C) The material must be capable of duplication.
D) The material must perform a read only function to minimize damaging changes in structure.
E) none of the above
G) B) and E)
Correct Answer
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Correct Answer
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A) hydrogen bonding and allows binding to less specific sequences as well.
B) hydrogen bonding and precludes binding to any other sequence.
C) stacking interactions and could be mimicked using an intercalation molecule.
D) hydrogen bonding and could be mimicked using an intercalation molecule.
E) none of the above
G) B) and D)
Correct Answer
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Correct Answer
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A) DNA binding proteins distort DNA structure
B) Changes in ionic strength can alter DNA structure
C) Specific sequences can cause deviations in conformation.
D) Changes in DNA conformation result from energy minimizations and do not relate to in vivo conditions.
E) All of the above are true.
G) A) and B)
Correct Answer
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Correct Answer
verified
A) type I
B) ribocatalyzers
C) C2'-endo
D) repressors
E) ethidium
F) type II
G) C3'-endo
H) hybridized
I) interchanged
J) supercoiled
K) cooperative
L) non-cooperative
M) underwound
N) ribozymes
O) deuterium
P) zinc finger
Q) leucine zipper
S) H) and P)
Correct Answer
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Correct Answer
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A) the nucleosome core particle; nucleases
B) linker DNA; the next nucleosome
C) the nucleosome core particle; the next nucleosome
D) linker DNA; nucleases
E) none of the above
G) None of the above
Correct Answer
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Correct Answer
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A) C2'-endo; A-DNA
B) C3'-endo; B-DNA
C) C2'-endo for pyrimidines and C3'-endo for purines: Z-DNA
D) C2'-endo for purines and C3'-endo for pyrimidines: B-DNA
E) C2'-endo for purines and C3'-endo for pyrimidines: A-DNA
G) A) and C)
Correct Answer
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Correct Answer
verified
A) type I
B) ribocatalyzers
C) C2'-endo
D) repressors
E) ethidium
F) type II
G) C3'-endo
H) hybridized
I) interchanged
J) supercoiled
K) cooperative
L) non-cooperative
M) underwound
N) ribozymes
O) deuterium
P) zinc finger
Q) leucine zipper
S) C) and O)
Correct Answer
verified
Correct Answer
verified
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