Question 1

The presence of proflavin is likely to induce

Accepted Answer

A) pyrimidine dimers. 
B) point mutations. 
C) deletions. 
D) transversions. 
E) Any of the above may occur. 
A) pyrimidine dimers. 
B) point mutations. 
C) deletions. 
D) transversions. 
E) Any of the above may occur.

Question 2

What enzymes would be used to repair this error?

Accepted Answer

A) methyl-directed mismatch repair enzymes 
B) nucleotide excision repair enzymes 
C) methyl-directed double strand break repair enzymes 
D) UvrABC plus UvrD 
E) None of the above systems can repair this error 
A) methyl-directed mismatch repair enzymes 
B) nucleotide excision repair enzymes 
C) methyl-directed double strand break repair enzymes 
D) UvrABC plus UvrD 
E) None of the above systems can repair this error

Question 3

In molecular biology labs researchers often use E.coli strains that are RecA minus (recA−)when transforming a cloned gene into a plasmid which explains why
(I)a Rec A-strain would have fewer replication errors.
(II)a Rec A-strain would have less opportunity forming DNA mutations.
(III)a Rec A-strain would increase error repair.

Accepted Answer

A) I only. 
B) II only. 
C) III only. 
D) I,II 
E) II,III 
A) I only. 
B) II only. 
C) III only. 
D) I,II 
E) II,III

Question 4

Matching
Choose the correct answer from the list.Not all the answers will be used.

-The RNA segment to which DNA residues are added during replication is the ______.

Accepted Answer

A)  SSB 
B)  Tus 
C)  primosome 
D)  ARS 
E)  ATS
F) primer
G) transposons
H) nick translation
I) photolyase
J) processive
K) G-loops
L) G-quartets
M) accurate
N) lagging strand synthesis
O) MCM
P) abortive 
A)  SSB 
B)  Tus 
C)  primosome 
D)  ARS 
E)  ATS
F) primer
G) transposons
H) nick translation
I) photolyase
J) processive
K) G-loops
L) G-quartets
M) accurate
N) lagging strand synthesis
O) MCM
P) abortive

Question 5

Which of the following would result in increased processivity in E.coli?

Accepted Answer

A) β (sliding)clamp 
B) primosome 
C) helicase 
D) Dna B 
E) Dna G 
A) β (sliding)clamp 
B) primosome 
C) helicase 
D) Dna B 
E) Dna G

Question 6

Which of the following statements about DNA methylation is TRUE?
(I)Methylation plays a role in genomic imprinting.
(II)Methylation can influence gene regulation.
(III)Methylation plays a role in restriction modification systems.
(IV)Methylation occurs in prokaryotic cells,but not eukaryotic cells.

Accepted Answer

A) I,II,III,IV 
B) I,II,III 
C) II,III 
D) II,III,IV 
E) II only 
A) I,II,III,IV 
B) I,II,III 
C) II,III 
D) II,III,IV 
E) II only

Question 7

Synthesis of telomeres requires the enzyme ______,which is a type of ______.

Accepted Answer

A) telomerase,helicase 
B) telomerase,ribonucleoprotein 
C) ribonuclease,riboprotein 
D) ribotelase,ligase 
E) none of the above 
A) telomerase,helicase 
B) telomerase,ribonucleoprotein 
C) ribonuclease,riboprotein 
D) ribotelase,ligase 
E) none of the above

Question 8

What kind of mutation has occurred?

Accepted Answer

A) transition 
B) transversion 
C) insertion 
D) deletion 
E) none of the above 
A) transition 
B) transversion 
C) insertion 
D) deletion 
E) none of the above

Question 9

Deamination of cytosine leads to the formation of

Accepted Answer

A) thymine. 
B) 5-methylcytosine. 
C) uracil. 
D) 5-bromouracil. 
E) 5-methyluracil. 
A) thymine. 
B) 5-methylcytosine. 
C) uracil. 
D) 5-bromouracil. 
E) 5-methyluracil.

Question 10

Considering the following eukaryotic DNA polymerases,which of the following has the highest fidelity?

Accepted Answer

A) DNA pol$\alpha$ 
B) DNA pol $\beta$ 
C) DNA pol $\delta$ 
D) All have high fidelity 
E) All have low fidelity 
A) DNA pol$\alpha$ 
B) DNA pol $\beta$ 
C) DNA pol $\delta$ 
D) All have high fidelity 
E) All have low fidelity

The presence of proflavin is likely to induce

What enzymes would be used to repair this error?

Matching Choose the correct answer from the list.Not all the answers will be used. -The RNA segment to which DNA residues are added during replication is the ______.

Which of the following would result in increased processivity in E.coli?

Which of the following statements about DNA methylation is TRUE? (I)Methylation plays a role in genomic imprinting. (II)Methylation can influence gene regulation. (III)Methylation plays a role in restriction modification systems. (IV)Methylation occurs in prokaryotic cells,but not eukaryotic cells.

Synthesis of telomeres requires the enzyme ,which is a type of .

What kind of mutation has occurred?

Deamination of cytosine leads to the formation of

Considering the following eukaryotic DNA polymerases,which of the following has the highest fidelity?

Introduction to the Chemistry of Life

Water

Nucleotides, nucleic Acids, and Genetic Information

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, inhibition and Control

Biochemical Signaling

Introduction to Metabolism

Glucose Catabolism

Glycogen Metabolism and Gluconeogenesis

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

Transcription and Rna Processing

Protein Synthesis

Regulation of Gene Expression

Filters

Exam 25: DNA Replication, repair and Recombination

The presence of proflavin is likely to induce

What enzymes would be used to repair this error?

Matching Choose the correct answer from the list.Not all the answers will be used. -The RNA segment to which DNA residues are added during replication is the ______.

Which of the following would result in increased processivity in E.coli?

Which of the following statements about DNA methylation is TRUE? (I)Methylation plays a role in genomic imprinting. (II)Methylation can influence gene regulation. (III)Methylation plays a role in restriction modification systems. (IV)Methylation occurs in prokaryotic cells,but not eukaryotic cells.

Synthesis of telomeres requires the enzyme ______,which is a type of ______.

What kind of mutation has occurred?

Deamination of cytosine leads to the formation of

Considering the following eukaryotic DNA polymerases,which of the following has the highest fidelity?

Introduction to the Chemistry of Life

Water

Nucleotides, nucleic Acids, and Genetic Information

Amino Acids

Proteins: Primary Structure

Proteins: Three-Dimensional Structure

Protein Function Part I: Myoglobin and Hemoglobin

Carbohydrates

Lipids and Biological Membranes

Membrane Transport

Enzyme Catalysis

Enzyme Kinetics, inhibition and Control

Biochemical Signaling

Introduction to Metabolism

Glucose Catabolism

Glycogen Metabolism and Gluconeogenesis

Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Photosynthesis

Lipid Metabolism

Amino Acid Metabolism

Mammalian Fuel Metabolism: Integration and Regulation

Nucleotide Metabolism

Nucleic Acid Structure

Transcription and Rna Processing

Protein Synthesis

Regulation of Gene Expression

Filters

Synthesis of telomeres requires the enzyme ,which is a type of .