Dna Metabolism Replicationrecombinationand Repair - Biochemistry | Biology+

Course

Biochemistry

Study Pack

Set 1: The Facts of Life: Chemistry Is the Logic of Biological Phenomena

Set 2: Water: the Medium of Life

Set 3: Thermodynamics of Biological Systems

Set 4: Amino Acids

Set 5: Proteins: Their Primary Structure and Biological Functions

Set 6: Proteins: Secondary, tertiary, and Quaternary Structure

Set 7: Carbohydrates and the Glycoconjugates of Cell Surfaces

Set 9: Lipid Biosynthesis

Set 10: Membranes and Membrane Transport

Set 11: The Reception and Transmission of Extracellular Information

Set 12: Enzymes Kinetics and Specificity

Set 13: Mechanisms of Enzyme Action

Set 14: Enzyme Regulation

Set 15: Molecular Motors

Set 16: Nutrition and the Organization of Metabolism

Set 17: Glycolysis

Set 18: The Tricarboxylic Acid Cycle

Set 19: Electron Transport and Oxidative Phosphorylation

Set 20: Photosynthesis

Set 21: Gluconeogenesis, glycogen Metabolism, and the Pentose Phosphate Pathway

Set 22: Fatty Acid Catabolism

Set 23: Nitrogen Acquisition and Amino Acid Metabolism

Set 24: Nucleotides and Nucleic Acids

Set 25: Structure of Nucleic Acids

Set 26: Synthesis and Degradation of Nucleotides

Set 27: Recombinant Dna: Cloning and Creation of Chimeric Genes

Set 28: DNA Metabolism: Replication, recombination, and Repair

Set 29: Transcription and the Regulation of Gene Expression

Set 30: Protein Synthesis

Set 31: Post-Transcriptional Regulation of Gene Expression

Set 32: Completing the Protein Life Cycle: Folding, processing, and Degradation

Set 33: Metabolic Integration and Organ Specialization

Set 28 Dna Metabolism Replicationrecombinationand Repair

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Set 28 Dna Metabolism Replicationrecombinationand Repair

(Multiple Choice)

Free

Which of the following is a characteristic of Okazaki fragments?

A)about 20-30 nucleotides in length
B)newly synthesized large lagging strand fragments
C)synthesis performed in the 3'5' direction
D)initiated with an RNA primer

Answer

(Multiple Choice)

Free

Which of the following is a characteristic of the 3'-exonuclease activity of DNA polymerase I of E.coli?

A)It is relatively fast compared to polymerase activity.
B)It removes nucleotides that do not base pair at the 5'-end of the growing chain.
C)It is similar to the polymerase activity.
D)It is an editor of polymerase activity.

Answer

(Multiple Choice)

Free

Which of the following regarding DNA gyrase in E.Coli is correct?

A)It works to remove negative supercoiling introduced by the DnaB protein (helicase).
B)It is a topoisomerase that hydrolyzes ATP during its reaction mechanism.
C)Its mechanism involves the breaking of a single phosphoester bond in 1 strand of dsDNA.
D)It works to introduce positive supercoiling in DNA to overcome the torsion stress imposed upon unwinding.

Answer