Protein Synthesis - 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 30 Protein Synthesis

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Set 30 Protein Synthesis

(Multiple Choice)

Free

Which of the following is NOT a characteristic exhibited by aminoacyl-tRNA synthetases?

A)Some are monomeric and others are oligomeric.
B)They attach the amino acid to the 2'- or the 3'-hydroxyl of the ribose located at the 5'-end of the tRNA.
C)They attach the amino acid to a terminal adenylate residue on the tRNA.
D)Through binding specificity,they relate specific amino acids to appropriate codons.

Answer

(Multiple Choice)

Free

What is the linkage between the amino acid and the tRNA in an amino-acyl tRNA complex?

A)an aminoacyl ester
B)an amide
C)an acid anhydride
D)a diester

Answer

(Multiple Choice)

Free

Which of the following is an important difference between a class I and a class II aminoacyl-tRNA synthetase?

A)The 2 classes proceed through different aminoacyl-AMP intermediates.
B)Class I synthetases first attach the amino acid to the 2'-hydroxyl on ribose,whereas class II attach them to the 3'-hydroxyl.
C)Class I synthetases attach amino acids to the 5'-end of the tRNA,whereas class II attach them to the 3'-end.
D)The 5'-end of the tRNA molecule is phosphorylated only for those tRNAs recognized by class I synthetases.

Answer